WO2001002314A1 - Fines spheres creuses de verre et procede de preparation associe - Google Patents
Fines spheres creuses de verre et procede de preparation associe Download PDFInfo
- Publication number
- WO2001002314A1 WO2001002314A1 PCT/JP2000/004249 JP0004249W WO0102314A1 WO 2001002314 A1 WO2001002314 A1 WO 2001002314A1 JP 0004249 W JP0004249 W JP 0004249W WO 0102314 A1 WO0102314 A1 WO 0102314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- particle size
- less
- hollow glass
- raw material
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 244
- 239000002002 slurry Substances 0.000 claims abstract description 57
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 claims abstract description 37
- 238000009826 distribution Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001238 wet grinding Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 67
- 238000005187 foaming Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 11
- 238000007496 glass forming Methods 0.000 claims description 6
- 239000004005 microsphere Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 11
- 239000004604 Blowing Agent Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 36
- 238000007667 floating Methods 0.000 description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- 230000000694 effects Effects 0.000 description 24
- 239000000945 filler Substances 0.000 description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 239000012530 fluid Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 238000002441 X-ray diffraction Methods 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- -1 shirasu Chemical compound 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 239000013585 weight reducing agent Substances 0.000 description 9
- 239000002270 dispersing agent Substances 0.000 description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 7
- 239000003677 Sheet moulding compound Substances 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 6
- 239000003350 kerosene Substances 0.000 description 6
- 238000005339 levitation Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 description 6
- 235000011152 sodium sulphate Nutrition 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229910021538 borax Inorganic materials 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000004328 sodium tetraborate Substances 0.000 description 5
- 235000010339 sodium tetraborate Nutrition 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 235000019700 dicalcium phosphate Nutrition 0.000 description 4
- 229940095079 dicalcium phosphate anhydrous Drugs 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000005388 borosilicate glass Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 238000004017 vitrification Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 241000894433 Turbo <genus> Species 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002928 artificial marble Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- JUNWLZAGQLJVLR-UHFFFAOYSA-J calcium diphosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])(=O)OP([O-])([O-])=O JUNWLZAGQLJVLR-UHFFFAOYSA-J 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 229910000393 dicalcium diphosphate Inorganic materials 0.000 description 1
- 235000019821 dicalcium diphosphate Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical class [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/002—Hollow glass particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
- Y10T428/2996—Glass particles or spheres
Definitions
- the present invention relates to a fine hollow glass spherical body and a method for producing the same.
- Micro hollow glass spheres are generally called glass microballoons (hollow bodies), which have a lower specific gravity than conventional fillers, have heat resistance, pressure resistance, and impact resistance, and are used as fillers. It has the effect of improving the physical properties of the filler, such as strength, dimensional stability, and moldability, while simultaneously reducing the weight of the filler.
- applications that are expected to expand due to miniaturization include not only resin molded parts, but also heat-insulating paints for heat-insulating applications, and wire coatings and substrates for low-dielectric applications.
- micro hollow glass spheres have a wide range of applications and are expected to expand in size.
- a minute hollow glass spherical body and a method for producing the same have been proposed in Japanese Patent Publication No. 49-37565, Japanese Patent Laid-Open No. 58-156551, Japanese Patent Publication No. 4-370177, and the like.
- the JP 58- 1 5655 1 a raw material such as S I_ ⁇ 2, H 3 B0 3, C a C0 3, Na 2 C_ ⁇ 3, NH 4 H 2 P_ ⁇ 4, N a 2 S_ ⁇ 4 Melt at a high temperature of 1 000 ° C or more to form a glass containing a large amount of sulfur components, and then dry-pulverize the glass, classify it, and disperse and retain in a flame the fine glass powder obtained.
- the sulfur component is foamed as a foaming agent component to form borosilicate glass micro hollow spheres
- the particle density is 0. 5 0 g Z cm 3 or less levels, the average particle diameter and about 5 0 m It is shown to be a large sphere.
- Japanese Patent Publication No. 437017 there is described a method of obtaining fine hollow glass spheres by firing a fine powder of silica gel carrying a glass forming component and a foaming agent component in a furnace.
- the physical properties of the hollow glass sphere obtained by this method are shown to have a particle density of about 0.3 g Z cm 3 and an average particle diameter of about 70 ⁇ m.
- the hollow glass sphere obtained by such a manufacturing method can have a sufficient degree of hollowness to impart a lightening effect and a heat insulating effect, but has an average particle diameter of about 50 ⁇ or more. It also contains particles with a maximum particle size of more than 100 ⁇ , such as SMC (Sheet Molding Compound) for automotive exterior panels and applications requiring surface smoothness in the field of heat-insulating paints, etc.
- SMC Sheet Molding Compound
- the thickness of the composite material is regulated, including applications for lowering the dielectric constant, there was a problem that it could not be used.
- the particle size distribution is wide, the particle density of each particle tends to be easily distributed, and the large particles having a small particle density have a low particle strength. In such processing steps, excessive stress is generated and crushing occurs easily, and there is a problem that sufficient weight reduction effect, heat insulation effect, and low dielectric constant effect cannot be obtained for the purpose of use.
- the present invention solves the above-mentioned problems.
- a light-weight material having excellent strength and excellent heat insulating properties can be obtained, and when used as a filler for a paint, smoothness can be obtained.
- the purpose of the present invention is to provide a fine hollow glass sphere so that an excellent coating film can be obtained. Specifically, it has an unprecedented fine hollow with a small particle size, low particle density, sharp particle size distribution, high homogeneity, and hard to crush during handling such as kneading and molding. Disclosure of invention c for the purpose of providing glass spheres
- the first invention of the present invention is characterized in that the average particle size (based on volume) is 15 ⁇ or less, the maximum particle size is 4 or less, the particle density is 0.5 g Zcm 3 or less, and the particle size is represented by the following formula.
- Gradient 2. A 0 or less, B 2 0 3 content in the glass is from 9.0 to 20.0 wt. It is a micro hollow glass sphere.
- d 1 () and d 5 . , D 9. are the particle diameters at which the values of the volume-based integrated distribution on a sieve measured using a laser scattering particle size analyzer are 10%, 50%, and 90%, respectively.
- the fine hollow glass sphere has a particle density of 0.4 g / cm 3 or less, a particle size gradient of 1.0 or less, an average particle diameter of 10 m or less, Maximum particle size is less than 30 ⁇ m.
- the second invention of the present invention provides a method for preparing a slurry of a glass blended raw material having an average particle diameter of 3 ⁇ m or less by adding a flammable liquid to a glass blended raw material containing a foaming component, and wet-pulverizing the slurry. Is sprayed from a two-fluid nozzle at a gas pressure of 0.2 to 2 MPa to form droplets containing the glass-mixed raw material, and then heated to form fine hollow glass spheres. This is a method for producing the above-mentioned minute hollow glass spheres by performing a classification treatment so as to have a particle diameter of less than 45 ⁇ .
- the third invention of the present invention provides a glass preparation raw material having an average particle diameter of 3 ⁇ m or less by adding a flammable liquid to a glass preparation raw material containing a foaming component, and wet-milling the mixture to prepare a slurry. And spray it by applying a pressure of 0.1 to 8 MPa to form droplets containing the raw material for glass blending, and then heat it to form a fine hollow glass sphere, and if necessary, 45 // m
- the particle characteristics and the particle size characteristics of the fine hollow glass sphere have an average particle diameter of 15 ⁇ m or less, a maximum particle diameter of 45 m or less, and a particle density of 0.5 gZ cm 3 or less.
- the particle size gradient shown below is 2.0 or less.
- the average particle size is based on volume (the same applies hereinafter), and the particle size is determined by laser It can be measured using a scattering particle size analyzer.
- the average particle size of the micro hollow glass spheres exceeds 15 ⁇ m or the maximum particle size exceeds 45 ⁇ m, homogeneity is impaired and large strength is imparted, such as crushing during handling such as kneading and molding.
- SMC surface smoothness
- the insulating layer becomes too thick, which is not preferable.
- the average particle size and the maximum particle size may be as small as possible as long as the hollow particles can be maintained.However, if the average particle size and the maximum particle size are too small, agglomeration occurs when compounding with a resin, and a uniform dispersion state is achieved. It is not preferable because it may not be possible.
- the preferred average particle size is 3 to 10 ⁇ m, and the maximum particle size is 10 ⁇ m or less.
- the particle density is 0.4 g / cm 3 or less.
- the particle density is a value obtained by dividing the mass (g) of the particle by the apparent volume (outer shape, cm 3 ) of the particle, and can be measured by a dry automatic densitometer.
- the particle size gradient is 2.0 or less.
- Zd is a value determined by the 50 expression, in this formula, (1 ⁇ , d 5, d 90 , using a laser scattering type particle size measuring apparatus.
- the particle diameters at which the measured volume-based sieve integrated distribution values are 10%, 50%, and 90%, respectively (the same applies hereinafter).
- the particle size gradient exceeds 2.0, as in the case where the average particle size exceeds 15 / zm, homogeneity will be impaired, and it will not be possible to provide large strength, such as easy fracture during handling such as kneading and molding.
- the smoothness of the surface is also impaired when used as an SMC for a car exterior panel or as a filler for paint. Since when used as a low dielectric constant multilayer circuit board filler is too thick insulating layer, the particle size gradient of unfavorable one preferred hollow glass microspheres 1. is 0 or less c
- the a glass composition B 2 0 3 and 9-20% by weight (hereinafter the same) is intended to contain.
- B 2 0 as fine hollow glass spheres.
- the glass raw material is prepared so as to include in this range, and According to the method of the present invention as described in (1), it is possible to obtain a hollow glass sphere having a low density even if it is minute.
- borosilicate glass has high strength and low alkali elution degree, and is extremely suitable as a base material for fine hollow glass spheres.
- the typical composition of Houkei glasses S i 0 2 is 60 ⁇ 80%, B 2 0 3 is 9 ⁇ 20%, N a 2 0 is 3 ⁇ 1 5%, C a O is 5 1 5%, a 1 2 ⁇ 3 is 0-5%.
- B 2 2 3 -containing glass of the present invention other components may be further added for improving the physical properties based on this composition, and the amount required for the glass having a composition different from the borosilicate glass may be used.
- B 2 O 3 may be used.
- S I_ ⁇ 2 - B 2 0 3 High Kei silicate glass whose main component, S i 0 2 - A 1 2 ⁇ 3 - B 2 ⁇ 3-C a O- MgO alkali-free composition composed mainly of The glass etc. can be fisted.
- B 2 0 3 is inherently low as force melting point 450 ° C as a network former of glass, Slight present invention, Te is
- the glass blending raw material is vitrified by heating, and is generally blended at a ratio such that a plurality of different raw materials have a target glass composition.
- Glass materials include kay sand, shirasu, perlite, pine stone, obsidian, silica gel, and zeora.
- borax B 2 0 3 source such as boric acid is essential.
- glass powder obtained by pulverizing a glass cullet obtained by previously melting and cooling a predetermined amount of a plurality of raw materials in a hot-melting furnace so as to obtain a target glass composition is also preferably used as a glass blending raw material. it can.
- This glass blending raw material contains a foaming component.
- the foaming component has a function of generating gas when the glass-mixed raw material is vitrified by heating and becomes spherical, thereby making the vitrified molten glass hollow.
- Foaming components include sodium, potassium, lithium, calcium, magnesium, barium, aluminum and zinc sulfates, carbonates, nitrates, acetates, and water of crystallization. It is important to control the foaming component and the content in order to obtain the particle size and particle characteristics of the present invention.
- the content is adjusted to 1 to 20% by mass in terms of SO 3 in the glass raw material. It is preferable to contain it.
- the content is less than 1% by mass, the foaming is insufficient and the particle density becomes as large as 0.5 g / cm 3 or more, so that the target particle density cannot be obtained.
- the content is more than 20% by mass, the amount of the foaming gas is too large and is discharged to the outside without staying inside the particles. As a result, hollow particles cannot be obtained, which is not preferable.
- Such glass blended raw materials are wet-ground. It is preferable to use a flammable liquid as the liquid to be used for the wet pulverization, especially to use the same liquid as the slurry liquid at the time of spray combustion because the manufacturing process is simplified. It is preferable to adjust the amount of liquid so that the concentration of the glass-mixed raw material in the liquid in the wet pulverization process is the same as the concentration of the glass-mixed raw material in the slurry at the time of spraying, because the manufacturing process is simplified. Masure,
- a medium stirring type mill typified by a ball mill and a bead mill is preferable in terms of its fine powder grinding ability, but other wet mills can also be used.
- Contamination from the crushing equipment causes a decrease in the yield of the fine hollow glass spheres, so the material of the liquid contacting part should be a material with little wear such as alumina, zirconia, or alumina-zirconia composite ceramics. Materials with the same composition as some of the glass blending raw materials It is desirable to select a fee.
- the average particle size of the glass blended raw material after the wet pulverization is to efficiently obtain fine hollow glass spheres having particle characteristics such as a target average particle size and a particle size gradient, and a uniform composition. From the viewpoint of obtaining a hollow glass sphere having a fine particle diameter, it is necessary to set it to 3 im or less.
- a dispersant and a dispersion stabilizer may be added.
- a dispersing agent a nonionic surfactant, a cationic surfactant, an anionic surfactant, a polymer surfactant, or the like can be used.
- a polymer ion surfactant is particularly preferable.
- an acid-containing oligomer such as an acid-containing acryl oligomer, which is a copolymer of acrylic acid and an acrylic ester and has a large acid value of about 5 to 10 Omg KO HZ g, is preferable.
- Such a polymer anion-based surfactant is advantageous because it contributes to dispersion and stabilization of the slurry, and can also suppress the viscosity of the slurry to a low level.
- the concentration of the glass-mixed raw material in the slurry is preferably from 5 to 50% by mass, and more preferably from 10 to 40% by mass. If the concentration of the glass-mixed raw material in the slurry is less than 5% by mass / 0, the basic unit of the flammable liquid forming the slurry increases, which is not preferable. Conversely 50 mass. /. Exceeding the viscosity increases the viscosity of the slurry, making it inconvenient to handle, and also hinders the formation of fine droplets during spraying.
- the slurry is converted into droplets.
- the first method for producing droplets is to use a two-fluid nozzle and to produce droplets at a gas pressure of 0.2 to 2 MPa.
- the gas pressure is less than 0.2 Mpa, the particle diameter of the fine hollow spherical body becomes too large, and it becomes difficult to obtain the target particle diameter.
- the gas pressure exceeds 2 MPa, the combustion flame may be misfired, or the particle diameter of the resulting fine hollow glass spheres may be small, and the outer shell thickness may be extremely thin, causing foaming inside the particles.
- the components volatilize out of the outer shell and the hollow part decreases, making it difficult to obtain the target particle density.
- the preferred pressure is between 0.3 and 1.5 MPa is there.
- the second method for producing droplets is a method in which a slurry is applied with a pressure of 0.1 to 8 MPa and sprayed to form droplets. If this pressure is less than 0.1 MPa, the particle diameter of the fine hollow glass sphere becomes too large, and it becomes difficult to obtain a target particle diameter.
- the pressure exceeds 8 MPa, the combustion flame may be misfired, or the particle diameter of the resulting fine hollow glass spheres may be too small, resulting in an extremely thin outer shell and foaming inside the particles.
- the components volatilize out of the outer shell and the hollow space decreases, making it difficult to obtain the target particle density.
- the preferred pressure is between 2 and 6 MPa.
- the produced droplets contain a glass blending raw material. If the size of the droplet is too large, it is not preferable because combustion by heating becomes unstable or large particles are generated. On the other hand, if the particle size is too small, the obtained glass composition becomes difficult to be uniform, and the yield of the fine hollow glass spheres is undesirably reduced.
- Preferred droplet sizes are in the range of 0.1 to 7 Qm.
- Such droplets are heated to melt the glass-mixed raw material and vitrify, and at the same time gasify the foaming component in the glass to form a fine hollow glass sphere.
- Any heating means such as combustion and electric heating can be used.
- the heating temperature depends on the temperature at which the glass mixture raw material is vitrified. Specifically, it is in the range of 300 to 150 ° C.
- the liquid component of the slurry is a flammable liquid, it burns and generates heat, contributing to the melting of the glass.
- the formed minute hollow glass spheres are collected by a method using a cyclone, a bag filter, a scrubber or a packed tower. Next, the unfoamed product in the recovered powder is removed, and only the foamed product is recovered by a flotation method using water. When sorting low-density foamed products, it is effective to flotate with alcohol having a low specific gravity.
- the classification is not particularly limited, but a method using an air classifier or a wet or dry sieving apparatus is preferable.
- the fine hollow glass spheres produced by the above method have an average particle diameter of 15 ⁇ or less measured with a laser scattering type particle size analyzer, a particle size gradient of 2.0 or less, and particles measured with a dry automatic densitometer. density is not less 0. 5 gZc m 3 or less, a thickness sufficient has a hollow degree and applications Ya composite material that will be required a high smoothness of the surface to impart such weight reduction effect and insulating effect is restricted It can be used very suitably for various applications.
- the micro hollow glass sphere according to the present invention is useful for the following applications.
- it has excellent particle characteristics and particle size characteristics, and has sufficient particle strength and is hard to be crushed in the application process, so it can be used for resin molded parts such as SMC for automotive exterior panels and heat insulation coatings.
- resin molded parts such as SMC for automotive exterior panels and heat insulation coatings.
- an extremely smooth surface or coated surface of the molded article of the resin can be obtained, and a desired lightening effect or heat insulating effect can be obtained. It can also be used widely for applications where the thickness of composite materials such as low dielectric constant fillers is regulated.
- the applications of the micro hollow glass spheres of the present invention are not limited to the above-mentioned applications, but include lightweight fillers such as cement, mortar, synthetic wood, low-melting metals and alloys such as aluminum and magnesium, and heat-insulating lightweight fillers for building materials. It can be used very suitably in various fields and applications, such as materials, explosive fillers, electric insulating layer fillers, soundproofing fillers, cosmetic fillers, filtration materials, blast media and spacers.
- a large hollow glass sphere of 20 zm or more When mixed with a large hollow glass sphere of 20 zm or more, the gap between large particles The spherical body can be filled, and higher weight reduction, heat insulation effect, and lower dielectric constant effect can be obtained.
- a minute hollow glass sphere having a small, low-density and uniform particle size can be obtained. This is because droplets are easy to be uniform in size, and one droplet has one minute hollow glass. It is thought that the spherical particles are formed, and the droplets burn each to generate combustion gas, thereby preventing the aggregation of each particle. Further, B 2 0 3 component is considered that it possible in cooperation with its preparation obtain such hollow glass microspheres.
- the pole mill used was a table-top ball mill having an internal volume of 500 cc, and was used by inserting about 250 cc of alumina balls of 10 to 15 mm0.
- the glass-mixed raw material and 150 g of kerosene were put therein, and wet-pulverized at 100 rpm for 20 hours to obtain a slurry of the glass-mixed raw material.
- the glass-mixed raw material was recovered from the obtained glass-mixed raw material slurry, and the average particle diameter was measured using a laser scattering particle size analyzer (Nikkiso Co., Ltd. Microtrac HRA model 9320-X100; the same applies hereinafter). However, it was 1.2 / m.
- the obtained slurry of the glass-mixed raw material was formed into droplets by a two-fluid nozzle, and a flame was brought close to the droplets to perform combustion, thereby vitrifying and producing minute hollow glass spheres.
- Air was used as the gas of the two-fluid nozzle, the pressure was 0.4 MPa, and the size of the droplet generated at that time was about 10 ⁇ m.
- the combustion air volume during combustion was 1.1 times the theoretical air volume, and the combustion temperature was about 1100 ° C: After collecting the obtained particles with a bag filter, Water levitation rate by mixing and centrifuging As a result, it was confirmed that about 37% by mass floated on the water surface.
- the water floating particles were classified with a Turbos cleaner (manufactured by Turbo Kogyo Co., Ltd., model TS125X200, the same applies hereinafter) in which a mesh of polyester mesh 24 / m was set, and the sieved product was collected.
- a Turbos cleaner manufactured by Turbo Kogyo Co., Ltd., model TS125X200, the same applies hereinafter
- the B 2 ⁇ 3 content of the glass was measured using an ICP (inductively coupled high-frequency plasma analyzer, Model I CPS-5000, manufactured by Shimadzu Corporation, the same applies hereinafter). Met.
- the slurry of the glass blended raw material obtained in the same manner as in Example 1 was dropped using a two-fluid nozzle. Then, the flame was brought close to the droplets and burned to produce vitrified and fine hollow glass spheres. Air was used as the gas of the two-fluid nozzle, the pressure was 0.3 MPa, and the size of the droplet generated was about 13 ⁇ m. The amount of combustion air during combustion was 1.1 times the theoretical amount of air, and the combustion temperature was about 1100 ° C.
- the particles obtained were collected with a bag filter, mixed with water, and centrifuged to measure the water levitation rate. As a result, it was confirmed that about 45% by mass of the particles floated on the water surface.
- the water-floating product was recovered as a slurry, which was separated into solids using a reduced pressure filter, and then dried by standing at 120 ° C. to obtain water-floating particles. Observation of the shape of the water-floating particles with a scanning electron microscope revealed that the shape and deviation were hollow and truly spherical.
- the water-floating particles were classified with a turbos cleaner set with a polyester mesh of 42 ⁇ , and the sieved product was recovered.
- an average particle diameter (d 50) is 1 2. 0 ⁇ , the maximum particle diameter of 40 m, Oite to volume basis oversize cumulative distribution, ( 1 1 was 24.5 ⁇ , d 9 was 6.9 ⁇ m, the particle size gradient was 1.467, and the particle density measured by a dry automatic densitometer was 0.38 g / cm 3 .
- the yield was 40% by mass, and the breaking strength when the volume was reduced by 10% on a volume basis by hydrostatic pressure was 21 MPa.
- the mill used had an internal volume of 1400 cc and was made of zirconia.
- the beads were used in an amount of 112 cc of zirconia balls having an average diameter of 0.65 mm ⁇ .
- the operating conditions were as follows: the number of revolutions was 2500 rpm, and wet grinding was performed for 30 minutes. Was.
- the glass-mixed raw material was recovered from the obtained glass-mixed raw material slurry, and the volume-based average particle diameter was measured using a laser scattering particle size analyzer.
- the slurry of the glass-mixed raw material thus obtained was formed into droplets using a two-fluid nozzle in the same manner as in Example 1, and combustion was performed by bringing a flame closer to produce a hollow glass spherical body.
- air was used as the gas of the two-fluid nozzle, the pressure was 0.6 MPa, and the size of the droplet was about 8 ⁇ m.
- the combustion air volume during combustion was 1.1 times the theoretical air volume, and the combustion temperature was about 110 ° C.
- the particles obtained were collected in a bag filter, mixed with water, and the water-float product was centrifuged to measure the water-floating rate. As a result, it was confirmed that about 45% by mass of the particles floated on the water surface.
- the water levitated particles were classified with a turbo screener provided with a polyester mesh having a mesh size of 24 ⁇ , and the sieved product was recovered.
- the particle size of the sieved product was measured with a laser-scattering particle size analyzer, the average particle size was 9.3 ⁇ m and the maximum particle size was 23 ⁇ . . Is 13.1 ⁇ m, d 9 . Was 6.9 m and the particle size gradient was 0.667.
- the particle density of the water floating product was measured by a dry automatic densimeter at 0. 3 8 gZc m 3, the yield 3 9% by mass ivy.
- Example 3 When the prepared slurry was sprayed, the procedure was the same as in Example 3, except that carbon dioxide was used as the fog gas for the two-fluid nozzle, to obtain a fine hollow glass sphere.
- the obtained particles were classified in the same manner as in Example 3, and the particle size of the sieved product was measured by a laser scattering type particle size analyzer. The average particle size was 8.1 ⁇ , and the maximum particle size was 22 ⁇ m.
- d In the volume-based sieve cumulative distribution, d ,. Is 1 1. 4 ⁇ ⁇ , d 9 . Is 6.2 ⁇
- the particle size gradient was 0.642.
- the particle density of the water-floated product measured by a dry automatic densitometer was 0.35 g / cm 3 , and the yield was 44% by mass.
- the slurry of the glass-mixed raw material obtained in Example 3 was sprayed by applying pressure to form droplets containing the glass-mixed raw material, and burned by approaching a flame to produce a hollow glass sphere.
- the pressure applied to the slurry was 4 MPa, and the droplet size during spraying was about 4.5.
- the combustion air volume during combustion was 1.1 times the theoretical air volume, and the combustion temperature was about 1100 ° C.
- the obtained particles were collected by a bag filter, they were mixed with water and centrifuged to measure the water levitation rate, and it was confirmed that about 39% by mass of the particles floated on the water surface.
- the water-floating product was recovered as a slurry, and the solid was separated from the slurry by a reduced pressure filter, and then dried by standing at 120 ° C. to obtain water-floating particles. Observation of the shape of the water-floating particles with a scanning electron microscope revealed that they were all hollow and truly spherical.
- Example 2 the water levitated particles were classified with a turbo screener provided with a polyester mesh having a mesh size of 17 ⁇ , and a sieved product was recovered.
- the particle size of the sieved product was measured with a laser scattering particle size analyzer, the average particle size was 7.8 ⁇ m and the maximum particle size was 15.5 ⁇ . , D,. Is 10.5 m, d 9 . Was 4.8 // m and the particle size gradient was 0.731.
- the particle density of screen-passed as measured by a dry automatic density meter 0. 48 g / cm 3, the yield mediation 7 This 30 wt%.
- the obtained micro hollow glass sphere was confirmed to be vitreous and a micro hollow glass sphere. Also included in the glass
- the B 2 0 3 content was 1 0.2% by weight was measured using ICP.
- Example 3 The same sand mill and beads as in Example 3 were used, and the operating conditions were also the same.
- the glass-mixed raw material was recovered from the obtained glass-mixed raw material slurry, and the volume-based average particle diameter was measured using a laser scattering particle size analyzer. The result was 0.5 Zm.
- the obtained slurry of the glass-mixed raw material was formed into droplets by a two-fluid nozzle, and combustion was performed by approaching a flame, and together with vitrification, a fine hollow glass spherical body was produced.
- air was used as the gas of the two-fluid nozzle, the pressure was 0.15 MPa, and the size of the droplet was about 20 m.
- the combustion air volume during combustion was 1.2 times the theoretical air volume, and the combustion temperature was about 1000 ° C.
- the obtained particles were collected by a bag filter, mixed with water, and centrifuged to measure the water-junction ratio. As a result, it was confirmed that about 65% by mass of the particles floated on the water surface.
- the average particle diameter of the water-floating particles measured using a laser scattering particle size analyzer was 9.5 m, but in the volume-based sieve integrated distribution, d 1 ( ⁇ 26 / zm, d 9 was 4.5 // m and the particle size gradient was 2.263.
- Example 1 the same as Example 1
- the lightening effect and the impact strength of the injection-molded product were measured. almost theoretical and 0. 8 1 g / cm 3 density
- the Izod impact strength of the injection-molded product was as low as 1.7 kjZm 2 , which was not practically usable.
- Example 2 The same ball mill and balls as in Example 1 were used.
- the slurry of the glass-mixed raw material was put therein, and the operation conditions were set at a rotation speed of lOorpm, and wet-pulverized for 6 hours.
- the glass blended raw material was recovered from the obtained slurry of the glass blended raw material, and the average particle diameter was measured using a laser scattering type particle size measuring apparatus to be 3.5 / m.
- the obtained slurry of the glass-mixed raw material was formed into droplets by a two-fluid nozzle, and combustion was performed by approaching a flame, and together with vitrification, a hollow glass spherical body was produced.
- air was used as the gas of the two-fluid nozzle, the pressure was 0.15 MPa, and the size of the droplet was about 30 m.
- the combustion air volume during spray combustion was 1.2 times the theoretical air volume, and the combustion temperature was about 1 000 ° C.
- the collected particles were collected with a bag filter, mixed with water, and centrifuged to measure the water levitation rate. As a result, it was confirmed that about 40% by mass of the particles floated on the water surface.
- the average particle size of the water-floating particles was 19 ⁇ . Is 45 ⁇ m, d 9 . Was 11 ⁇ m and the particle size gradient was 1.789. Observation with a scanning electron microscope revealed that the larger one contained hollow glass spheroids of about 40 to 50 ⁇ m. Mizunjun elegance measured with a dry automatic densitometer Had a particle density of 0.65 gZ cm 3 .
- the water floating particles were classified with a turbo screener equipped with a mesh of polyester mesh 24/24 m, and the sieved product was collected to measure the particle density. It was 75 gZcm 3 .
- Example 2 polypropylene with the same density as in Example 1 and the Izod impact strength of an injection-molded product is used as the micro hollow glass sphere.
- the density was 0.89 g / cm 3 and the Izod impact strength was 8.5 kj Zm 2 .
- the hollow glass sphere was added in an amount of 15% by mass and the same measurement was performed, the density was 0.84 gZcm 3, which was the theoretical value (0.84 g / cm 3 ).
- the Izod impact strength of the molded product was as low as 2.3 kJ / m 2 , which was a level that could not be used practically.
- Example 2 The same ball mill and balls as in Example 1 were used.
- the glass-mixed raw material and 150 g of kerosene were put therein, and wet-pulverized at 50 rpm for 4 hours to obtain a slurry of the glass-mixed raw material.
- the glass-mixed raw material was recovered from the obtained glass-mixed raw material slurry, and the volume-based average particle diameter was measured using a laser single-scattering type particle size analyzer to be 27.5 ⁇ .
- the slurry of the glass-mixed raw material thus obtained was formed into droplets using a two-fluid nozzle, and combustion was performed by approaching a flame, and together with vitrification, a hollow glass spherical body was produced.
- air was used as the gas of the two-fluid nozzle, the pressure was 0.15 MPa, and the size of the droplet was about 60 ⁇ m.
- After collecting the resulting particles in a bag filter and foremost, when measuring the water flotation ratio by mixing in water centrifuged then it was confirmed that about 58% by weight to surface, MizuAtsushi elegant only As a slurry
- the solid was separated from the solid with a reduced pressure filter, and then dried by standing at 120 ° C. to obtain water floating particles. Observation of the shape of the water-floating particles with a scanning electron microscope revealed that all of the particles were spherical.
- the average particle size was 52 ⁇ .
- d 90 is a is a particle size gradient 2 4 mu m 1. was 2 3 1.
- the particle density of the levitation product measured by a dry automatic densitometer was 0.36 g / cm 3 .
- Example 2 the fine hollow glass spherical body water-floating product was added to polypropylene, and the weight reduction effect was examined.
- the density of polypropylene alone was measured, it was 0.89 g / cm 3 .
- the density was 0.84 gZcm 3 , which was significantly higher than the theoretical value (0.73 gZcm 3 ).
- the reason for this is considered to be that part of the fine hollow glass spherical particles was crushed in a processing step such as kneading. Since the glass density is 2.4 g / cm 3 , it is estimated that about 55% of the micro hollow glass spheres were broken.
- Example 3 The same mill and beads were used as in Example 3, and the operating conditions were the same as in Example 3.
- the glass-mixed raw material was recovered from the obtained glass-mixed raw material slurry, and the volume-based average particle diameter was measured using a laser scattering type particle size analyzer. The result was 1. ⁇ .
- the slurry of the glass-mixed raw material thus obtained was formed into droplets using a two-fluid nozzle in the same manner as in Example 1, and combustion was performed by bringing a flame closer to produce a hollow glass spherical body.
- Air was used as the gas of the two-fluid nozzle, the pressure was 0.6 MPa, and the size of the droplet was about 8 // m.
- the amount of combustion air during combustion was 1.1 times the theoretical amount of air, and the combustion temperature was about 110 ° C.
- the collected particles were collected by a bag filter, mixed with water, and centrifuged to determine the water levitation rate, and it was confirmed that about 45% by mass of the particles floated on the water surface.
- Example 2 the water levitated particles were classified with a turbo screener provided with a polyester mesh of 24 // m, and the sieved product was recovered.
- the minute hollow glass sphere according to the present invention has a fine particle size, low particle density particle characteristics and a sharp particle size distribution, a high homogeneity, and a strength that is not easily crushed in a processing step such as handling.
- resin molded parts such as SMC for automotive exterior panels and thermal insulation paints
- extremely smooth resin molded body surfaces and painted surfaces can be obtained, and these applications
- the desired weight-saving effect and / or heat-insulating effect can be obtained in various uses including the above.
- the resin layer can be made thinner, and it can be widely used for applications where the thickness of composite materials such as low dielectric constant fillers is restricted.
Description
Claims
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US09/763,881 US6531222B1 (en) | 1999-06-30 | 2000-06-28 | Fine hollow glass sphere and method for preparing the same |
EP00942367A EP1172341A4 (en) | 1999-06-30 | 2000-06-28 | FINE HOLLOW GLASS SPHERES AND PROCESS FOR PREPARING THE SAME |
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JP11/185698 | 1999-06-30 | ||
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JP2016169152A (ja) * | 2010-09-08 | 2016-09-23 | スリーエム イノベイティブ プロパティズ カンパニー | グラスバブルズ、それによる複合材料、及びグラスバブルズの製造方法 |
KR101902591B1 (ko) * | 2010-09-08 | 2018-09-28 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 유리 버블, 그로부터의 복합체, 및 유리 버블의 제조 방법 |
JP2014510011A (ja) * | 2011-03-07 | 2014-04-24 | スリーエム イノベイティブ プロパティズ カンパニー | 中空微小球 |
CN111266593A (zh) * | 2020-03-31 | 2020-06-12 | 燕山大学 | 一种具有梯度结构单元的高强韧金属材料及其制备方法 |
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EP1172341A4 (en) | 2003-06-04 |
EP1172341A1 (en) | 2002-01-16 |
US6531222B1 (en) | 2003-03-11 |
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