WO2018110341A1 - チタン酸カリウム粉末及びその製造方法、摩擦調整材、樹脂組成物、摩擦材、並びに摩擦部材 - Google Patents
チタン酸カリウム粉末及びその製造方法、摩擦調整材、樹脂組成物、摩擦材、並びに摩擦部材 Download PDFInfo
- Publication number
- WO2018110341A1 WO2018110341A1 PCT/JP2017/043434 JP2017043434W WO2018110341A1 WO 2018110341 A1 WO2018110341 A1 WO 2018110341A1 JP 2017043434 W JP2017043434 W JP 2017043434W WO 2018110341 A1 WO2018110341 A1 WO 2018110341A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- potassium
- potassium titanate
- friction
- powder
- resin composition
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims abstract description 152
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 239000002783 friction material Substances 0.000 title claims abstract description 72
- 239000011342 resin composition Substances 0.000 title claims description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 239000003607 modifier Substances 0.000 title claims description 11
- 239000002245 particle Substances 0.000 claims abstract description 117
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 62
- 239000011591 potassium Substances 0.000 claims description 61
- 229910052700 potassium Inorganic materials 0.000 claims description 61
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 44
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 41
- 238000010304 firing Methods 0.000 claims description 39
- 239000000203 mixture Substances 0.000 claims description 38
- 239000010936 titanium Substances 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 239000001569 carbon dioxide Substances 0.000 claims description 22
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 19
- 229920001187 thermosetting polymer Polymers 0.000 claims description 17
- 239000004408 titanium dioxide Substances 0.000 claims description 16
- 239000012298 atmosphere Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000010828 elution Methods 0.000 claims description 7
- 238000010299 mechanically pulverizing process Methods 0.000 claims description 7
- 230000036541 health Effects 0.000 abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 38
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 29
- 239000000463 material Substances 0.000 description 22
- -1 nitrogen or argon Chemical compound 0.000 description 21
- 238000000034 method Methods 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 19
- 229910052719 titanium Inorganic materials 0.000 description 18
- 238000003786 synthesis reaction Methods 0.000 description 16
- 229910010413 TiO 2 Inorganic materials 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000005011 phenolic resin Substances 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000013078 crystal Substances 0.000 description 10
- 238000010298 pulverizing process Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- OBTSLRFPKIKXSZ-UHFFFAOYSA-N lithium potassium Chemical compound [Li].[K] OBTSLRFPKIKXSZ-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 238000007561 laser diffraction method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910001414 potassium ion Inorganic materials 0.000 description 4
- 238000000790 scattering method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- SWHAQEYMVUEVNF-UHFFFAOYSA-N magnesium potassium Chemical compound [Mg].[K] SWHAQEYMVUEVNF-UHFFFAOYSA-N 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 3
- 229910001950 potassium oxide Inorganic materials 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 3
- 241000224489 Amoeba Species 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000012766 organic filler Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 229910001060 Gray iron Inorganic materials 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940007424 antimony trisulfide Drugs 0.000 description 1
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920005556 chlorobutyl Polymers 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- ZDHURYWHEBEGHO-UHFFFAOYSA-N potassiopotassium Chemical compound [K].[K] ZDHURYWHEBEGHO-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- IMNMWKFKHDPTSB-UHFFFAOYSA-N silicic acid zirconium Chemical compound [Zr].[Si](O)(O)(O)O IMNMWKFKHDPTSB-UHFFFAOYSA-N 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- AFNRRBXCCXDRPS-UHFFFAOYSA-N tin(ii) sulfide Chemical compound [Sn]=S AFNRRBXCCXDRPS-UHFFFAOYSA-N 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/005—Alkali titanates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/049—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by pulverising at particular temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2203/00—Controlling
- B22F2203/11—Controlling temperature, temperature profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/05—Light metals
- B22F2301/054—Alkali metals, i.e. Li, Na, K, Rb, Cs, Fr
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/20—Refractory metals
- B22F2301/205—Titanium, zirconium or hafnium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/12—Particle morphology extending in one dimension, e.g. needle-like with a cylindrical shape
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
Definitions
- the present invention relates to potassium titanate powder and a method for producing the same, a friction modifier, a resin composition, a friction material, and a friction member.
- Friction members such as brake linings, disc pads, and clutch facings that make up braking devices for various vehicles and industrial machines have a high coefficient of friction, are stable, have excellent fade resistance, and wear resistance. , Rotor aggression is required to be low.
- the potassium potassium titanate fiber represented by the general formula K 2 Ti 6 O 13 has a crystal structure of a tunnel structure, has a high melting point, is chemically stable, and is difficult to elute potassium ions.
- the friction material formed from the resin composition containing 6 potassium titanate fibers is excellent in heat resistance, wear resistance, reinforcement, and the like.
- a compound that generates titanium dioxide by heating (hereinafter referred to as a titanium source) and a compound that generates potassium oxide by heating (hereinafter referred to as a potassium source) are mixed with TiO 2 / K 2 O.
- a fiber mass in which potassium dititanate is aggregated in bundles as an initial phase fiber by solidifying the heated melt in one direction to obtain a fiber mass, Potassium ion is eluted by washing with water and pickling, melts the fibers, dehydrates the hydrated potassium titanate fibers recovered through the treatment, and baked to produce Etc.
- potassium titanate fibers have an average fiber diameter of 0.1 ⁇ m to 0.5 ⁇ m and an average fiber length of 10 ⁇ m to 20 ⁇ m.
- WHO fibers defined by the World Health Organization (WHO) long diameter of 5 ⁇ m or more, 6) titanic acid that can achieve the required characteristics as a friction material while avoiding safety and health concerns, since the minor axis contains fibrous particles having a minor axis of 3 ⁇ m or less and an aspect ratio of 3 or more. Potassium particles are desired.
- Patent Document 1 a titanium source and a potassium source are mixed so that the molar ratio of TiO 2 / K 2 O is about 2, and fired to obtain potassium dititanate particles, and the obtained potassium dititanate particles are obtained.
- potassium titanate particles having an aspect ratio of 3 or less can be produced by mixing and firing a titanium source and a titanium source so that the molar ratio of TiO 2 / K 2 O is about 6.
- plate-like potassium titanate can be produced by immersing plate-like titanate obtained by acid-treating plate-like magnesium potassium titanate or lithium potassium titanate in a potassium hydroxide solution and then firing. Has proposed.
- Patent Document 3 a titanium source and a potassium source are blended so that the molar ratio of TiO 2 / K 2 O is about 2 and mixed while being mechanochemically pulverized. It has been proposed that amorphous potassium 6 titanate particles can be produced by acid treatment of potassium dititanate particles and firing after elution of potassium ions.
- Patent Document 4 an agglomerate or granulated titanium source and a potassium source having an average particle diameter of 0.1 mm to 10 mm are mixed so that the molar ratio of TiO 2 / K 2 O is about 6, and the speed is set to 0.
- potassium titanate particles having an average minor axis of 3 ⁇ m to 10 ⁇ m and an average aspect ratio of 1.5 to 10 are obtained. It proposes that it can be manufactured.
- Patent Document 5 when a titanium source and a potassium source are mixed so that the molar ratio of TiO 2 / K 2 O is about 6, and the temperature is raised to a maximum firing temperature exceeding 1000 ° C., the maximum firing temperature is increased from 1000 ° C. After heating up and firing so that the rate of temperature rise is 15 ° C./min or less, cooling is performed from the maximum firing temperature to 500 ° C. so that the rate of temperature decrease is 100 ° C./min or more.
- particles having an average particle diameter of 20 ⁇ m to 100 ⁇ m in which potassium titanate having an average thickness (average minor axis) of 2 ⁇ m to 6 ⁇ m and an average length (average major axis) of 3 ⁇ m to 10 ⁇ m are aggregated are obtained. It proposes that it can be manufactured.
- the resin composition used for the friction member contains copper fiber and copper powder in addition to potassium titanate in order to improve wear resistance.
- an adhesive film is formed on the rotor surface due to the spreadability of copper during friction between the friction material and the rotor (partner material), and this adhesive film acts as a protective film, resulting in a high coefficient of friction at high temperatures. It is thought that it can be maintained.
- friction materials containing copper contain wear powder generated during braking, which may cause river, lake, marine pollution, etc., the amount of copper used is regulated in North America. is what happened. Therefore, potassium titanate particles that can achieve the required characteristics as a friction material are desired even in a blend that does not contain a copper component or has a reduced copper content.
- Patent Document 1 since the particles cannot be grown large, sufficient reinforcement cannot be obtained, and the friction characteristics are not sufficient. Moreover, there exists a possibility that the method of the patent document 1 and the patent document 4 aiming at manufacturing columnar and fibrous particle
- An object of the present invention is to provide potassium titanate powder, a method for producing the potassium titanate powder, and a method for producing the potassium titanate powder, which can provide excellent friction characteristics when used in a friction material while avoiding safety and health concerns.
- the object is to provide a friction modifier, a resin composition, a friction material, and a friction member using potassium titanate powder.
- the present invention provides the following potassium titanate powder, friction modifier, resin composition, friction material, friction member, and method for producing the potassium titanate powder.
- Item 2 The potassium titanate powder according to Item 1, wherein the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more is 50% by volume or more.
- Item 3 The potassium titanate powder according to Item 1 or Item 2, wherein the content of the fibrous particles is 0.3% by volume or less.
- Item 4 The potassium titanate powder according to any one of Items 1 to 3, wherein the specific surface area is 0.3 m 2 / g to 3 m 2 / g.
- a friction modifier comprising the potassium titanate powder according to any one of Items 1 to 4.
- Item 6 A resin composition comprising the potassium titanate powder according to any one of Items 1 to 4 and a thermosetting resin.
- Item 7 The resin composition according to Item 6, wherein the content of the copper component is 0.5% by mass or less as a copper element in a total amount of 100% by mass of the resin composition.
- Item 8 The resin composition according to Item 6 or 7, wherein the resin composition is for a friction material.
- Item 9 A friction material, which is a molded body of the resin composition according to any one of Items 6 to 8.
- a friction member comprising the friction material according to Item 9.
- a method for producing potassium titanate powder characterized in that
- Item 12 The method for producing potassium titanate powder according to Item 11, wherein the firing temperature in the step (B) is in the range of 800 ° C to 1000 ° C.
- the elution of potassium in the step (C) is performed by adjusting the pH of the aqueous slurry to 11.5 to 12.5 by mixing an acid with the aqueous slurry of potassium dititanate.
- Item 14 The method for producing potassium titanate powder according to any one of Items 11 to 13, wherein the firing temperature in the step (C) is in the range of 600 ° C to 1300 ° C.
- the potassium titanate powder of the present invention can provide excellent wear resistance when used as a friction material while avoiding safety and health concerns.
- the friction coefficient is high and stable, and excellent fade resistance can be imparted.
- FIG. 1 is an SEM photograph of particles constituting the powder obtained in Synthesis Example 1.
- FIG. 2 is an SEM photograph of particles constituting the powder obtained in Synthesis Example 2.
- FIG. 3 is an SEM photograph of particles constituting the powder obtained in Synthesis Example 3.
- FIG. 4 is an SEM photograph of particles constituting the powder obtained in Synthesis Example 4.
- FIG. 5 is an SEM photograph of particles constituting the powder obtained in Synthesis Example 5.
- FIG. 6 is an X-ray diffraction chart of the powders obtained in Synthesis Examples 1 to 6.
- 7 is a diagram showing an X-ray diffraction chart of the raw material (potassium dititanate), the acid treatment of potassium titanate, and the obtained potassium titanate powder (potassium hexatitanate) in Example 2.
- FIG. . FIG. 8 is an SEM photograph of particles constituting the powder obtained in Example 4.
- FIG. 9 is a graph showing the relationship between the average friction coefficient of the friction material obtained in Example 5 and Comparative Examples 5 to 8
- the potassium titanate powder of the present invention is a powder composed of columnar potassium titanate particles having an average major axis of 30 ⁇ m or more, an average minor axis of 10 ⁇ m or more, and an average aspect ratio of 1.5 or more.
- the columnar shape in the present invention satisfies the above average major axis, average minor axis, and average aspect ratio, such as a rod, columnar, columnar, prismatic, strip-shaped, substantially columnar, substantially prismatic, and substantially strip-shaped.
- the shape including the shape as a whole means a substantially columnar shape.
- the average major axis and the average minor axis in the present invention are measured by image analysis of observation with a scanning electron microscope (SEM) with the long side of the rectangle having the smallest area out of the rectangle circumscribing the particle as the major axis and the short side as the minor axis.
- the cumulative area is 50% diameter obtained from each area distribution.
- the average aspect ratio is obtained by measuring the average major axis and the average minor axis by the above method and calculating the ratio (average major axis / average minor axis).
- the average major axis of the columnar potassium titanate particles of the present invention is 30 ⁇ m or more, preferably 30 ⁇ m to 200 ⁇ m, more preferably 35 ⁇ m to 100 ⁇ m.
- the average minor axis is 10 ⁇ m or more, preferably 10 ⁇ m to 130 ⁇ m, more preferably 15 ⁇ m to 65 ⁇ m.
- the average aspect ratio is 1.5 or more, preferably 1.5 to 5, more preferably 1.5 to 3, and further preferably 1.5 to 2.5.
- the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more is preferably 50% by volume or more, more preferably 80% by volume or more, and 90% by volume or more. More preferably it is.
- the content is a value obtained by calculating the volume of the particle by the major axis ⁇ minor axis ⁇ minor axis using the major axis and minor axis measured by the above method and converting the volume.
- the potassium titanate powder of the present invention preferably has an average particle size of 30 ⁇ m to 200 ⁇ m, preferably 35 ⁇ m to 100 ⁇ m, which is a particle size of 50% cumulative volume in the particle size distribution determined by the laser diffraction / scattering method. It is more preferable.
- the average particle diameter is within the above range, the friction characteristics can be further enhanced when used for a friction material.
- the content of fibrous particles is preferably 0.3% by volume or less, preferably 0.2% by volume or less, and 0.1% by volume or less. Is more preferable. When the content of the fibrous particles is within the above range, safety and health concerns can be avoided.
- fibrous particles mean particles having a major axis measured by the above method of 5 ⁇ m or more, a minor axis of 3 ⁇ m or less, and an aspect ratio of 3 or more.
- the content of the fibrous particles is a value obtained by calculating the volume of the particle by the major axis ⁇ minor axis ⁇ minor axis using the major axis and minor axis measured by the above-described method and converting the volume.
- the specific surface area of the potassium titanate powder of the present invention is preferably 0.3 m 2 / g to 3 m 2 / g, more preferably 0.4 m 2 / g to 2 m 2 / g, 0.5 m More preferably, it is 2 / g to 1 m 2 / g.
- the specific surface area can be measured according to JIS Z8830.
- the amount of the thermosetting resin in the resin composition is small, so if the specific surface area of the potassium titanate powder is too large, Mechanical strength may decrease. Also, if the specific surface area of the potassium titanate powder becomes too large, the hygroscopicity becomes high, and water (moisture) adheres to the surface of the friction material or is absorbed into the friction material to absorb moisture and absorb water. In some cases, the friction coefficient becomes extremely high compared to the time, and brake noise (squeal) that occurs during braking may occur.
- the specific surface area of the potassium titanate powder is set to 0.3 m 2 / g to 3 m 2 / g, it is possible to obtain a resin composition with a further balance between mechanical strength and friction and wear characteristics. It can be expected to suppress.
- the potassium titanate powder of the present invention has a tunnel structure crystal structure because it has a composition close to 6 potassium titanate and its composition, has a high melting point, is chemically stable, and has potassium ions (alkali Component) is difficult to elute. Since it is believed that the thermosetting resin is inhibited by the alkali component and the thermosetting resin is deteriorated (decrease in strength), the potassium titanate powder of the present invention has a feature that alkali is hardly eluted. Therefore, it is preferable from the viewpoint of mechanical strength.
- the potassium titanate powder of the present invention is a silane coupling agent (such as an aminosilane coupling agent) or a titanate cup for the purpose of further improving dispersibility and further improving adhesion with a thermosetting resin.
- the surface treatment may be performed by a conventional method using a ring agent or the like.
- the potassium titanate powder of the present invention may be a friction modifier.
- the method for producing potassium titanate powder of the present invention includes a step (A) of preparing a pulverized mixture by mixing a compound or titanium dioxide that generates titanium dioxide by heating and potassium carbonate while mechanically pulverizing, and the above pulverization The mixture is heated and calcined in an atmosphere having a carbon dioxide concentration of 1% by volume to 60% by volume to prepare potassium dititanate (B) and heated after eluting the potassium content from the potassium dititanate. And a step (C) of firing.
- Step (A) is a step of preparing a pulverized mixture by mechanically pulverizing a compound that generates titanium dioxide by heating or titanium dioxide (hereinafter referred to as a titanium source) and mechanically pulverizing potassium carbonate.
- the titanium source is not particularly limited as long as it is a raw material or titanium dioxide that contains elemental titanium and does not inhibit the formation of titanium dioxide by heating.
- examples of such a compound include titanium dioxide, titanium suboxide, orthotitanic acid or the like.
- examples thereof include a salt, metatitanic acid or a salt thereof, titanium hydroxide, peroxotitanic acid or a salt thereof. These can be used alone or in combination of two or more.
- titanium dioxide is preferable. This is because titanium dioxide is more excellent in mixability and reactivity with potassium carbonate and is inexpensive.
- the crystal form of titanium dioxide is preferably a rutile type or anatase type.
- the shape is not particularly limited, but is preferably a powder having an average particle size of 0.1 ⁇ m to 500 ⁇ m because it is easier to handle.
- the powders include those in which secondary particles are formed because the primary particles are difficult to monodisperse, and granulated products obtained by granulating the particles.
- the average particle size of the titanium source means a particle size having a cumulative volume of 50% in the particle size distribution determined by the laser diffraction / scattering method.
- the shape of potassium carbonate is not particularly limited because it is mixed by performing mechanical pulverization described later, but it is preferably a powder having an average particle diameter of 0.1 mm to 1 mm because it is easier to handle.
- the powders include those in which secondary particles are formed because the primary particles are difficult to monodisperse, and granulated products obtained by granulating the particles.
- the average particle size of potassium carbonate means a particle size of 50% cumulative volume in the particle size distribution determined by the laser diffraction / scattering method.
- the mixing ratio of the titanium source and potassium carbonate is preferably a molar ratio of TiO 2 / K 2 O of 1.5 to 2.5, calculated in terms of oxides of titanium element and potassium element.
- a part of potassium carbonate may be a compound other than potassium carbonate that generates potassium oxide by heating (hereinafter referred to as other potassium source).
- other potassium sources include potassium hydroxide and potassium oxide.
- Mechanical grinding includes a method of grinding while giving a physical impact. Specifically, a pulverization process using a vibration mill can be given. When pulverizing with a vibration mill, shearing stress due to grinding of the mixed powder simultaneously disturbs the atomic arrangement and decreases the interatomic distance. It is thought that it is obtained. Thereby, it is considered that a pulverized mixture having high reaction activity can be obtained. Since mechanical pulverization gives shearing stress more efficiently to the raw material, dry processing without using water, a solvent, or the like is preferable.
- the time for mixing while mechanically pulverizing is not particularly limited, but is generally preferably within a range of 0.1 to 2 hours.
- Step (B) is a step of preparing potassium dititanate by heating and firing the pulverized mixture prepared in step (A) in an atmosphere having a carbon dioxide concentration of 1% to 60% by volume.
- the pulverized mixture prepared in step (A) is heated and fired in an atmosphere in which the carbon dioxide concentration is adjusted as described above.
- the carbon dioxide concentration may be adjusted by heating the pulverized mixture from room temperature to raise the temperature and starting the temperature until the temperature of the pulverized mixture reaches the reaction start temperature of potassium carbonate. It is preferable to start from the start (room temperature). Further, the carbon dioxide concentration may be adjusted until the baking reaction is completed, but it is preferable that the carbon dioxide concentration is adjusted until it is cooled to 300 ° C. from the viewpoint of operability.
- the method for adjusting the carbon dioxide concentration is not particularly limited as long as it falls within the above range.
- a mixed gas of carbon dioxide and an inert gas such as nitrogen or argon, or a mixed gas is circulated.
- the carbon dioxide concentration is 1 to 60% by volume, preferably 7 to 55% by volume.
- potassium carbonate may be unreacted and potassium tetratitanate fibers may remain, which is not preferable.
- the shape of potassium dititanate may be amoeba-like, which is not preferable.
- the firing temperature of the pulverized mixture is preferably in the range of 800 ° C. to 1000 ° C., more preferably in the range of 850 ° C. to 950 ° C. If the firing temperature is too low, particle growth may be insufficient. If the firing temperature is too high, potassium titanate may melt and shape control may be difficult.
- the firing time is preferably 1 hour to 8 hours, more preferably 2 hours to 5 hours in the above temperature range.
- the rate of temperature rise from room temperature (20 ° C.) to the firing temperature is preferably 0.5 ° C./min to 10 ° C./min, more preferably 1 ° C./min to 5 ° C./min. Further, after the calcination reaction, it is cooled to room temperature (20 ° C.).
- the cooling rate from the calcination temperature to 300 ° C. is preferably 0.5 ° C./min to 10 ° C./min, more preferably 1 ° C./min. Min to 5 ° C./min.
- a known firing method can be adopted as long as the carbon dioxide concentration can be controlled.
- various firing means such as an electric furnace, a rotary kiln, a tubular furnace, a fluidized firing furnace, and a tunnel kiln. Can be used.
- Step (C) is a step of heating and baking after elution of potassium from potassium dititanate prepared in step (B).
- the concentration of the aqueous slurry is not particularly limited and can be appropriately selected from a wide range. However, considering workability and the like, it is preferably 1% by mass to 30% by mass, more preferably 2% by mass to 20% by mass. .
- the acid is not particularly limited, and for example, inorganic acids such as sulfuric acid, hydrochloric acid and nitric acid, and organic acids such as acetic acid can be used. Two or more acids may be used in combination as required.
- the pH of the aqueous slurry is measured after mixing with an acid and usually stirring for 1 to 5 hours.
- the acid is usually used in the form of an aqueous solution.
- concentration of the acid aqueous solution is not particularly limited and may be appropriately selected within a wide range. Usually, it may be 1% by mass to 98% by mass.
- a potassium titanate powder composed of columnar potassium titanate particles as the final product After eluting the potassium content, it is filtered by suction filtration or the like, and dehydrated. After the dehydration treatment, by firing, a potassium titanate powder composed of columnar potassium titanate particles as the final product can be obtained.
- the firing temperature at this time is preferably in the range of 600 ° C. to 1300 ° C., and more preferably in the range of 700 ° C. to 1000 ° C.
- the firing time is preferably 0.5 to 8 hours, more preferably 1 to 6 hours in the above temperature range. If the firing temperature is too low, crystal conversion may be insufficient. If the firing temperature is too high, potassium titanate may melt and shape control may be difficult. When the firing time is shortened, crystal conversion may be insufficient. Moreover, if the firing time is too long, the production efficiency may deteriorate.
- the firing in the step (C) can be performed by various firing means such as an electric furnace, a rotary kiln, a tubular furnace, a fluidized firing furnace, a tunnel kiln and the like. After firing, sieving, classification, etc. may be performed as necessary.
- potassium titanate powder composed of coarse columnar potassium titanate particles can be produced.
- the resin composition of the present invention is characterized by containing the potassium titanate powder of the present invention and a thermosetting resin. If necessary, titanate compound powders other than the potassium titanate powder of the present invention ( Hereinafter, it may be simply referred to as “titanate compound powder”), and may further contain other materials.
- the potassium titanate powder is a powder composed of columnar potassium titanate particles having an average major axis of 30 ⁇ m or more, an average minor axis of 10 ⁇ m or more, and an average aspect ratio of 1.5 or more.
- the content of the potassium titanate powder in the resin composition of the present invention is, for example, 3% by mass to 50% by mass with respect to 100% by mass of the total amount of the resin composition when the resin composition of the present invention is used as a friction material. %, More preferably 3% by mass to 30% by mass, still more preferably 5% by mass to 20% by mass.
- thermosetting resin is used as a binding material that is integrated with potassium titanate powder and the like to give strength. Accordingly, any one of known thermosetting resins used as the binder can be appropriately selected and used.
- phenol resin elastomer dispersed phenol resin such as acrylic elastomer dispersed phenol resin and silicone elastomer dispersed phenol resin
- modified phenol resin such as acrylic modified phenol resin and silicone modified phenol resin
- formaldehyde resin melamine resin
- epoxy resin Group polyester resin; urea resin; and the like.
- a phenol resin and a modified phenol resin are preferable from the viewpoint that heat resistance, moldability, and friction characteristics can be further improved.
- the content of the thermosetting resin in the resin composition is, for example, 3% by mass to 20% by mass with respect to 100% by mass of the total amount of the resin composition when the resin composition of the present invention is used as a friction material. It is preferable. By setting the content of the thermosetting resin in the range of 3% by mass to 20% by mass, an appropriate amount of the binder is filled in the gaps of the blended material, and much more excellent friction characteristics can be obtained.
- titanium of the present invention in addition to the material of the potassium titanate powder and thermosetting resin of the present invention, the titanium of the present invention can be used as a friction modifier, as necessary, as long as the effects of the excellent invention of the present invention are not impaired.
- a titanate compound powder other than potassium acid powder can be blended.
- the titanate compound powder is a powder composed of non-fibrous particles such as a spherical shape, a layer shape, a plate shape, a column shape, a block shape, or an indefinite shape.
- the content of fibrous particles is preferably 0.3% by volume or less, preferably 0.2% by volume or less, and more preferably 0.1% by volume or less. When the content of the fibrous particles is within the above range, safety and health concerns can be avoided.
- the titanate compound powder preferably has an average particle diameter of 1 ⁇ m to 30 ⁇ m or less, more preferably 3 ⁇ m to 20 ⁇ m, which is a particle diameter of 50% cumulative volume in the particle size distribution determined by the laser diffraction / scattering method. preferable.
- the average particle diameter is within the above range, the friction characteristics can be further enhanced when used for a friction material.
- the specific surface area of the titanium salt compound powder is preferably 0.3m 2 / g ⁇ 3m 2 / g, more preferably 0.4m 2 / g ⁇ 2m 2 / g, 0.5m 2 / More preferably, it is g to 1 m 2 / g.
- the specific surface area can be measured according to JIS Z8830. If the specific surface area of the titanate compound powder becomes too large, the wetted area with the binder resin becomes too large, and the amount of the binder involved in the strength of the entire resin composition may be reduced.
- titanate compound powder When titanate compound powder is used as a friction material, particularly a brake pad friction material, since the amount of the thermosetting resin in the resin composition is small, if the specific surface area of the titanate compound powder becomes too large, the resin composition The mechanical strength of the object may decrease. In addition, if the specific surface area of the titanate compound powder becomes too large, the hygroscopicity becomes high, and water (moisture) adheres to the surface of the friction material or is taken into the friction material to absorb moisture and absorb water. In some cases, the friction coefficient becomes extremely higher than that during drying, and brake noise (squeal) generated during braking may occur.
- the specific surface area of the titanate compound powder is set to 0.3 m 2 / g to 3 m 2 / g, it is possible to obtain a resin composition with a further balance between mechanical strength and friction and wear characteristics. Can be expected to be further suppressed.
- the content of titanate compound powder in the resin composition of the present invention is, for example, 3% by mass to 15% with respect to 100% by mass of the total amount of the resin composition when the resin composition of the present invention is used as a friction material. It is preferable that it is mass%.
- Fiber base materials include aromatic polyamide (aramid) fiber, fibrillated aramid fiber, acrylic fiber, cellulose fiber, phenol resin fiber and other organic fibers; copper, alumina, iron, zinc, tin, titanium, nickel, magnesium, silicon Straight or curled metal fibers whose main component is metal such as single metal or alloy-like fibers, copper fibers, cast iron fibers, etc .; glass fibers, rock wool, ceramic fibers, biodegradable ceramic fibers, biodegradable Mineral fiber, biosoluble fiber, wollastonite fiber, silicate fiber, inorganic fiber such as titanate fiber such as mineral fiber; flame-resistant fiber, PAN-based carbon fiber, pitch-based carbon fiber, carbon-based fiber such as activated carbon fiber And the like. Among these, one kind can be used alone, or two or more kinds can be used in combination.
- friction modifiers include tire rubber, acrylic rubber, isoprene rubber, NBR (nitrile butadiene rubber), SBR (styrene butadiene rubber), chlorinated butyl rubber, butyl rubber, silicone rubber, and other unvulcanized or vulcanized rubber powders; cashew dust, Organic fillers such as melamine dust; inorganic powders such as barium sulfate, calcium carbonate, lithium carbonate, calcium hydroxide (slaked lime), vermiculite, clay, mica, talc; metals such as copper, bronze, aluminum, zinc, iron, tin Inorganic fillers such as single or alloy metal powders; silicon carbide (silicon carbide), titanium oxide, alumina (aluminum oxide), silica (silicon dioxide), magnesia (magnesium oxide), zirconia (zirconium oxide), silicic acid Zirconium, chromium oxide, iron oxide, Grinding materials such as romite and quartz; synthetic or natural graphite (
- the content of other materials in the resin composition is 44% by mass to 94% by mass with respect to 100% by mass of the total amount of the resin composition.
- it is 64 to 89% by mass.
- the resin composition of the present invention has a copper component content of 0.5% by mass or less as a copper element in a total amount of 100% by mass of the resin composition, and preferably does not contain a copper component, thereby comparing with a conventional friction material. As a result, the environmental load can be reduced.
- does not contain a copper component means that copper fiber, copper powder, and an alloy (such as brass or bronze) containing copper and a compound are blended as raw materials for the resin composition. Say nothing.
- the resin composition of the present invention comprises: (1) a method of mixing each component with a mixer (Laedge mixer, pressure kneader, Eirich mixer, etc.); (2) preparing a granulated product of the desired component; If necessary, other components can be produced by a method of mixing with a mixer (Laedge mixer, pressure kneader, Eirich mixer, etc.).
- the content of each component of the resin composition of the present invention can be appropriately selected depending on the desired frictional properties, and can be produced using the production method described above.
- the resin composition of the present invention may be prepared by preparing a master batch containing a specific constituent component at a high concentration, and adding and mixing a thermosetting resin or the like to the master batch.
- the resin composition of the present invention is temporarily molded at room temperature (20 ° C.), and the obtained temporary molded product is heated and pressed (molding pressure: 10 MPa to 40 MPa, molding temperature: 150 ° C. to 200 ° C.). If necessary, the obtained molded body is heat-treated in a heating furnace (150 ° C. to 220 ° C., held for 1 hour to 12 hours), and then the molded body is subjected to machining and polishing to give a predetermined value.
- a friction material having the following shape can be manufactured.
- the friction material of the present invention is used as a friction member in which the friction material is formed to be a friction surface.
- the friction member that can be formed using the friction material includes, for example, (1) a configuration of only the friction material, (2) a base material such as a back metal, and a book provided on the base material to provide a friction surface.
- the structure etc. which have the friction material of invention are mentioned.
- the base material is used for further improving the mechanical strength of the friction member, and a metal, fiber reinforced resin, or the like can be used as the material.
- a metal, fiber reinforced resin, or the like can be used as the material.
- iron, stainless steel, glass fiber reinforced resin, carbon fiber resin, and the like can be given.
- Friction materials usually have many fine pores inside, and they serve as escape routes for decomposition products (gases and liquids) at high temperatures, while preventing friction characteristics from degrading and reducing friction material stiffness to damp. The occurrence of squeal is prevented by improving the performance.
- the composition and molding conditions of the material are controlled so that the porosity is 10% to 20%.
- the friction member of the present invention has excellent wear resistance, has a high coefficient of friction and is stable, and has excellent fade resistance. Therefore, the brake constituting a braking device for various vehicles, industrial machines, etc. It can be suitably used for lining, disc pads, clutch facings and the like.
- the friction material is used as a friction member for a disk pad (pad brake)
- it is preferable to control the material composition and molding conditions so that the Rockwell hardness of the friction material is 80 HRS to 95 HRS.
- the average major axis, the average minor axis, the average aspect ratio, and the particle content were calculated.
- the specific surface areas of the potassium titanate powder and the titanate compound powder were measured by an automatic specific surface area measuring apparatus (manufactured by micromeritics, product number “TriStarII3020”).
- the average particle diameter by laser diffraction of the potassium titanate powder and the titanate compound powder was measured with a laser diffraction particle size distribution measuring apparatus (manufactured by Shimadzu Corporation, product number “SALD-2100”).
- the obtained pulverized mixture was filled in an alumina boat, heated from room temperature to 880 ° C. over 4 hours in a tubular furnace, and then fired at 880 ° C. for 4 hours. Then, it cooled to room temperature (20 degreeC) over 4 hours, and obtained powder. Between the start of heating and the completion of cooling, air was introduced into the furnace to control the carbon dioxide concentration in the furnace to 0% (equivalent to the atmosphere).
- the composition of the obtained powder was K 2 Ti 2 O 5 (potassium dititanate).
- the shape of the particles constituting the powder was amoeba as shown by the SEM photograph in FIG.
- the results are shown in Table 1.
- An X-ray diffraction chart of the powder is shown in FIG.
- Table 1 shows the composition of the obtained powder and the shape of the particles constituting the powder.
- the shapes of the particles constituting the powders in Synthesis Examples 2 to 5 were confirmed by SEM photographs shown in FIGS.
- FIG. 6 shows X-ray diffraction charts of the powders obtained in Synthesis Examples 1 to 6. It has been confirmed that particles such as potassium hexatitanate constituting the final product powder produced using the powders obtained in Synthesis Examples 1 to 6 have substantially the same shape.
- the composition of the obtained powder was K 2 Ti 6 O 13 (6 potassium titanate).
- the particle shape constituting the powder was columnar.
- the average major axis of the particles was 20 ⁇ m, the average minor axis was 12 ⁇ m, and the average aspect ratio was 1.7.
- the fibrous particle content was 0.09% by volume, and the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more was 43% by volume.
- the specific surface area of the powder was 0.7 m 2 / g.
- the average particle diameter by laser diffraction was 23 ⁇ m. The results are shown in Table 2.
- Example 1 to Example 3 The same procedure as in Comparative Example 1 was performed except that the raw material was changed to the raw material produced in the synthesis example described in Table 2. Composition of the obtained powder, particle shape constituting the powder, average major axis, average minor axis, average aspect ratio, fibrous particle content, major particle diameter of 30 ⁇ m or more and minor axis of 10 ⁇ m or more, specific surface area of the powder, The results of the average particle diameter by laser diffraction are as shown in Table 2.
- FIG. 7 shows an X-ray diffraction chart of the raw material (potassium 2 titanate), the acid treatment of potassium titanate, and the obtained potassium titanate powder (potassium 6 titanate) in Example 2. .
- the obtained pulverized mixture was filled in a tubular furnace, heated from room temperature (20 ° C.) to 880 ° C. over 4 hours, and then calcined at 880 ° C. for 4 hours. Then, over a period of 4 hours and cooled to room temperature (20 ° C.), to obtain a powder of K 2 Ti 2 O 5 (potassium 2 titanate). Between the start of heating and the completion of cooling, a mixed gas of carbon dioxide and air was passed through the furnace to control the carbon dioxide concentration in the furnace to 8% by volume.
- the composition of the obtained powder was K 2 Ti 6 O 13 (6 potassium titanate).
- the shape of the particles constituting the powder was columnar.
- the average major axis of the particles was 35 ⁇ m, the average minor axis was 19 ⁇ m, and the average aspect ratio was 1.9.
- the fibrous particle content was 0.06% by volume.
- the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more was 87% by volume.
- the specific surface area of the powder was 0.9 m 2 / g.
- the average particle diameter by laser diffraction was 37 ⁇ m.
- Table 3 An SEM photograph of the particles constituting the powder is shown in FIG.
- the obtained pulverized mixture was filled in a crucible and baked in an electric furnace at 860 ° C. for 4 hours in an air atmosphere.
- the obtained fired body was crushed with a hammer mill to obtain a powder of K 2 Ti 2 O 5 (potassium dititanate).
- the composition of the obtained powder was K 2 Ti 6 O 13 (6 potassium titanate).
- the shape of the particles constituting the powder was amoeba.
- the fibrous particle content was 0.04% by volume.
- the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more was 4% by volume.
- the specific surface area of the powder was 8.0 m 2 / g.
- the average particle diameter by laser diffraction was 13 ⁇ m. The results are shown in Table 3.
- potassium lithium titanate 500 ml of a 10% by mass slurry was prepared. 98% sulfuric acid was added to adjust the pH to 1.6, and the mixture was stirred for 5 hours, filtered and washed with water. The filter cake was dispersed again in 400 ml of water, and a 40% by mass aqueous potassium hydroxide solution was added to adjust the pH to 13.75. Added and stirred for 5 hours. Then, after filtering, washing with water, drying, filling the crucible, it was baked in an electric furnace at 700 ° C. for 3 hours in an air atmosphere to obtain a powder.
- the composition of the obtained powder was K 2 Ti 6 O 13 (6 potassium titanate).
- the shape of the particles constituting the powder was plate.
- the fibrous particle content was 0.03% by volume.
- the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more was 26% by volume.
- the specific surface area of the powder was 1.5 m 2 / g.
- the average particle diameter by laser diffraction was 21 ⁇ m. The results are shown in Table 3.
- the obtained mixed powder was fired at 1150 ° C. for 2 hours, and the fired body was crushed with a hammer mill to obtain a powder.
- the composition of the obtained powder was K 2 Ti 6 O 13 (6 potassium titanate).
- the shape of the particles constituting the powder was columnar.
- the average major axis of the particles was 11 ⁇ m, the average minor axis was 5 ⁇ m, and the average aspect ratio was 2.2.
- the fibrous particle content was 3.06% by volume.
- the content of particles having a major axis of 30 ⁇ m or more and a minor axis of 10 ⁇ m or more was 0% by volume.
- the specific surface area of the powder was 0.4 m 2 / g.
- the average particle diameter by laser diffraction was 11 ⁇ m. The results are shown in Table 3.
- Examples 5 to 9 and Comparative Examples 5 to 12 The materials were blended according to the blending ratios in Table 4 and Table 6, mixed with an Eirich mixer, and then resin compositions of Examples and Comparative Examples were obtained. In addition, the unit of the compounding quantity of each component in Table 4 and Table 6 is the mass% in a resin composition.
- the obtained resin composition was temporarily molded (molding pressure 25 MPa), heated and pressed (molding pressure 20 MPa, molding temperature 150 ° C.), and further subjected to heat treatment (220 ° C.). The obtained molded body was processed into a fan shape having an area of 5.5 cm 2 to obtain a friction material.
- the crystal structure, particle shape, and fibrous particle content of the titanate compound powder 8 potassium titanate powder 1, 8 potassium titanate powder 2, lithium potassium titanate powder, magnesium potassium titanate powder
- Table 5 shows the amount, the particle content of the major axis of 30 ⁇ m or more and the minor axis of 10 ⁇ m or more, the specific surface area, and the average particle size by laser diffraction.
- Fade rate (%) [minimum friction coefficient / first friction coefficient] ⁇ 100 (1)
- the friction material of Example 5 according to the present invention has a greater fade rate than Comparative Examples 5 to 8. It shows that it is excellent in fade resistance, so that a fade rate is near 100%, and it turns out that the friction material of Example 5 according to this invention is excellent in fade resistance compared with another friction material.
- the friction material wear amount increases as the average friction coefficient of the conventional friction material increases.
- Example 5 which is a friction material containing the potassium titanate powder of the present invention, has an unexpected effect that the wear amount of the friction material is small despite the high average friction coefficient. I understand that.
- the potassium titanate powder of the present invention it is considered that a high friction coefficient and a low wear amount can be realized by improving the reinforcing property of the friction material surface.
- the friction material of Example 5 according to the present invention is a friction material using a titanate compound powder having a crystal structure of a conventional tunnel structure without containing a copper component. Compared with Comparative Examples 9 to 10, it can be seen that the fade rate is high and the wear amount is small. Further, the friction material of Example 5 according to the present invention is a friction material using a titanate compound powder having a crystal structure of a conventional layered structure, even if it does not contain a copper component. It can be seen that the fade rate and the average friction coefficient are higher than those.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Braking Arrangements (AREA)
Abstract
Description
本発明のチタン酸カリウム粉末は、平均長径30μm以上、平均短径10μm以上かつ平均アスペクト比が1.5以上の柱状チタン酸カリウム粒子により構成される粉末である。なお、本発明における柱状は、上記平均長径、平均短径、及び平均アスペクト比を満たせば、棒状、柱状、円柱状、角柱状、短冊状、略円柱形状、略角柱形状、略短冊形状等の形状を含めて、全体として形状が略柱状のものを意味するものとする。
本発明のチタン酸カリウム粉末の製造方法は、加熱により二酸化チタンを生成する化合物又は二酸化チタンと、炭酸カリウムとをメカニカルに粉砕しながら混合し、粉砕混合物を準備する工程(A)と、上記粉砕混合物を、二酸化炭素濃度が1体積%~60体積%の雰囲気下で加熱、焼成し、2チタン酸カリウムを準備する工程(B)と、上記2チタン酸カリウムからカリウム分を溶出した後に加熱、焼成する工程(C)とを備えていることを特徴とする。
本発明の樹脂組成物は、本発明のチタン酸カリウム粉末と、熱硬化性樹脂とを含有することを特徴とし、必要に応じて、本発明のチタン酸カリウム粉末以外のチタン酸塩化合物粉末(以下、単に「チタン酸塩化合物粉末」と称する場合がある)、その他材料をさらに含有することができる。
チタン酸カリウム粉末は、平均長径30μm以上、平均短径10μm以上かつ平均アスペクト比が1.5以上の柱状チタン酸カリウム粒子により構成される粉末であり、柱状チタン酸カリウム粒子が、組成式K2TinO2n+1〔式中、n=5.5~6.5〕で表わされることを特徴とする上述のチタン酸カリウム粉末のなかから任意のものを適宜選択して用いることができる。
熱硬化性樹脂は、チタン酸カリウム粉末等と一体化し、強度を与える結合材として用いられるものである。従って、結合材として用いられる公知の熱硬化性樹脂のなかから任意のものを適宜選択して用いることができる。例えばフェノール樹脂;アクリルエラストマー分散フェノール樹脂、シリコーンエラストマー分散フェノール樹脂等のエラストマー分散フェノール樹脂;アクリル変性フェノール樹脂、シリコーン変性フェノール樹脂等の変性フェノール樹脂;ホルムアルデヒド樹脂;メラミン樹脂;エポキシ樹脂;アクリル樹脂;芳香族ポリエステル樹脂;ユリア樹脂;等を挙げることができる。これらのうち1種を単独で、又は2種以上を組み合わせて用いることができる。このなかでも耐熱性、成形性、摩擦特性をより一層向上できる点から、フェノール樹脂や、変性フェノール樹脂が好ましい。
本発明には、本発明のチタン酸カリウム粉末、熱硬化性樹脂の材料以外に、必要に応じて、本発明の優れた発明の効果を損なわない範囲において、摩擦調整材として、本発明のチタン酸カリウム粉末以外のチタン酸塩化合物粉末を配合することができる。
本発明の樹脂組成物を摩擦材に用いる場合、上記本発明のチタン酸カリウム粉末、熱硬化性樹脂の材料以外に、必要に応じてその他材料を配合することができる。その他材料としては、例えば、以下の繊維基材や、摩擦調整材等を挙げることができる。
本発明の樹脂組成物は、(1)混合機(レーディゲミキサー、加圧ニーダー、アイリッヒミキサー等)で各成分を混合する方法;(2)所望する成分の造粒物を調製し、必要により他の成分を混合機(レーディゲミキサー、加圧ニーダー、アイリッヒミキサー等)で混合する方法等により製造することができる。
本発明においては、本発明の樹脂組成物を、常温(20℃)にて仮成形し、得られた仮成形物を加熱加圧成形(成形圧力10MPa~40MPa、成形温度150℃~200℃)し、必要に応じて、得られた成形体に加熱炉内で熱処理(150℃~220℃、1時間~12時間保持)を施し、しかる後その成形体に機械加工、研磨加工を加えて所定の形状を有する摩擦材を製造することができる。
以下の合成例、実施例、比較例において、チタン酸カリウムの組成はX線回折測定装置(リガク社製、品番「Ultima IV」)により確認した。チタン酸カリウム粉末を構成する粒子およびチタン酸塩化合物粉末を構成する粒子の形状は、走査型電子顕微鏡(SEM、日立ハイテクノロジー社製、品番「S-4800」)により観察した。チタン酸カリウム粉末を構成する粒子の長径及び短径を、SEMの倍率400倍の写真(繊維状粒子においては1000倍の写真)から画像解析ソフト(三谷商事社製、品名「WinRooF2015」)を用いて測定し、平均長径、平均短径、平均アスペクト比及び粒子含有量を算出した。チタン酸カリウム粉末およびチタン酸塩化合物粉末の比表面積は、自動比表面積測定装置(micromeritics社製、品番「TriStarII3020」)により測定した。チタン酸カリウム粉末およびチタン酸塩化合物粉末のレーザー回折による平均粒子径は、レーザー回折式粒度分布測定装置(島津製作所社製、品番「SALD-2100」)により測定した。
TiO2/K2O=2.0(モル比)となるように秤量した酸化チタンと炭酸カリウムとを振動ミルで粉砕しながら0.5時間混合した。
加熱開始から冷却完了までの間に炉に流通させるガスを、空気から二酸化炭素と空気の混合ガスに変更して炉内の二酸化炭素を表1に記載のCO2濃度に制御した以外は合成例1と同様の方法で行った。
(比較例1)
合成例2で製造した2チタン酸カリウムを原料として用いて、20質量%スラリー250mlを調製した。これに98質量%硫酸を加えて1時間攪拌し、pH12に調整した。このpH調整後のスラリーを濾過、水洗、乾燥した後、坩堝に充填し、大気雰囲気下で電気炉にて900℃で4時間焼成することで粉末を得た。
原料を表2に記載の合成例で製造した原料に変更した以外は、比較例1と同様にして行った。得られた粉末の組成、粉末を構成する粒子形状、平均長径、平均短径、平均アスペクト比、繊維状粒子含有量、長径30μm以上、かつ短径10μm以上の粒子含有量、粉末の比表面積、レーザー回折による平均粒子径の結果は、表2に示すとおりであった。
TiO2/K2O=2.0(モル比)となるように秤量した酸化チタンと炭酸カリウムとを振動ミルで粉砕しながら0.5時間混合した。
TiO2/K2O=2.0(モル比)となるように秤量した酸化チタンと炭酸カリウムとを振動ミルで粉砕しながら、0.5時間混合した。
酸化チタンと炭酸カリウム、炭酸リチウムとをTi:K:Li=1.73:0.8:0.27(モル比)の割合で配合し、坩堝に充填した後、電気炉にて大気雰囲気下で1030℃で3時間焼成を行った。得られた焼成体をハンマーミルにて粉砕し、粉砕品を水に分散し10質量%スラリーとし1時間撹拌し、湿式解砕を行った。濾過、乾燥後に目開き75μmの篩に通し、分級を行った。得られた生成物はX線回折によりチタン酸リチウムカリウムであること確認した。
TiO2/K2O=2.0(モル比)となるように秤量した酸化チタンと炭酸カリウムとを、自動乳鉢で粉砕混合し、これを0.5時間行った。得られた粉砕混合物75gを坩堝に充填した後、電気炉にて大気雰囲気下で800℃、3時間焼成した。
(実施例5~実施例9、比較例5~比較例12)
表4および表6の配合比率に従って材料を配合し、アイリッヒミキサーにて混合後、実施例及び比較例の樹脂組成物を得た。なお、表4および表6における各成分の配合量の単位は、樹脂組成物中の質量%である。得られた樹脂組成物を仮成形(成形圧力25MPa)し、加熱加圧成形(成形圧力20MPa、成形温度150℃)し、さらに熱処理(220℃)を行った。得られた成形体を面積5.5cm2の扇型に加工して摩擦材を得た。なお、表6で用いたチタン酸塩化合物粉末(8チタン酸カリウム粉末1、8チタン酸カリウム粉末2、チタン酸リチウムカリウム粉末、チタン酸マグネシウムカリウム粉末)の結晶構造、粒子形状、繊維状粒子含有量、長径30μm以上かつ短径10μm以上の粒子含有量、比表面積、レーザー回折による平均粒子径を表5に示した。
上記の方法で作成した実施例および比較例の摩擦材について、ロックウェル硬度をJIS D4421に従い測定し、結果を表4および表6に示した。硬さのスケールはSスケールを使用した。気孔率を、JIS D4418に従い測定した。比重をJIS D4417に従い測定した。結果を表4および表6に記載した。
上記の方法で作成した実施例及び比較例の摩擦材について、ダイナモ試験機とねずみ鋳鉄FC250型ローターを用いてJASO C406に準拠した条件で摩擦試験を行い、平均摩擦係数(試験全体の平均)、摩擦材摩耗量(試験前後の摩擦材の厚みの差)、ローター摩耗量(試験前後のローターの質量の差)を測定した。結果を表4および表6に示した。
Claims (14)
- 平均長径30μm以上、平均短径10μm以上かつ平均アスペクト比が1.5以上の柱状チタン酸カリウム粒子により構成される粉末であり、前記柱状チタン酸カリウム粒子が、組成式K2TinO2n+1〔式中、n=5.5~6.5〕で表わされることを特徴とする、チタン酸カリウム粉末。
- 長径30μm以上、かつ短径10μm以上の粒子の含有量が、50体積%以上であることを特徴とする、請求項1に記載のチタン酸カリウム粉末。
- 繊維状粒子の含有量が、0.3体積%以下であることを特徴とする、請求項1又は請求項2に記載のチタン酸カリウム粉末。
- 比表面積が、0.3m2/g~3m2/gであることを特徴とする、請求項1~請求項3のいずれか一項に記載のチタン酸カリウム粉末。
- 請求項1~請求項4のいずれか一項に記載のチタン酸カリウム粉末からなることを特徴とする、摩擦調整材。
- 請求項1~請求項4のいずれか一項に記載のチタン酸カリウム粉末と、熱硬化性樹脂とを含有することを特徴とする、樹脂組成物。
- 前記樹脂組成物の合計量100質量%において銅成分の含有量が銅元素として0.5質量%以下である、請求項6に記載の樹脂組成物。
- 摩擦材用であることを特徴とする、請求項6又は請求項7に記載の樹脂組成物。
- 請求項6~請求項8のいずれか一項に記載の樹脂組成物の成形体であることを特徴とする、摩擦材。
- 請求項9に記載の摩擦材を備えることを特徴とする、摩擦部材。
- 加熱により二酸化チタンを生成する化合物又は二酸化チタンと、炭酸カリウムとをメカニカルに粉砕しながら混合し、粉砕混合物を準備する工程(A)と、前記粉砕混合物を、二酸化炭素濃度が1体積%~60体積%の雰囲気下で加熱、焼成し、2チタン酸カリウムを準備する工程(B)と、前記2チタン酸カリウムからカリウム分を溶出した後に加熱、焼成する工程(C)とを備えることを特徴とする、チタン酸カリウム粉末の製造方法。
- 前記工程(B)における焼成温度が、800℃~1000℃の範囲内であることを特徴とする、請求項11に記載のチタン酸カリウム粉末の製造方法。
- 前記工程(C)におけるカリウム分の溶出が、前記2チタン酸カリウムの水性スラリーに酸を混合して前記水性スラリーのpHを11.5~12.5に調整して行われることを特徴とする、請求項11又は請求項12に記載のチタン酸カリウム粉末の製造方法。
- 前記工程(C)における焼成温度が、600℃~1300℃の範囲内であることを特徴とする、請求項11~請求項13のいずれか一項に記載のチタン酸カリウム粉末の製造方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018556583A JP6862473B2 (ja) | 2016-12-13 | 2017-12-04 | チタン酸カリウム粉末の製造方法 |
US16/347,721 US11352265B2 (en) | 2016-12-13 | 2017-12-04 | Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member |
EP17880104.9A EP3556730A4 (en) | 2016-12-13 | 2017-12-04 | POTASSIUM TITANATE POWDER, ITS PRODUCTION METHOD, FRICTION MODIFIER, RESIN COMPOSITION, FRICTION MATERIAL AND FRICTION ELEMENT |
KR1020197011134A KR102238500B1 (ko) | 2016-12-13 | 2017-12-04 | 티타늄산칼륨 분말 및 그의 제조 방법, 마찰 조정재, 수지 조성물, 마찰재, 그리고 마찰 부재 |
CN201780077068.1A CN110062747B (zh) | 2016-12-13 | 2017-12-04 | 钛酸钾粉末及其制造方法、摩擦调整材料、树脂组合物、摩擦材料以及摩擦部件 |
CN202210116283.0A CN114394617B (zh) | 2016-12-13 | 2017-12-04 | 钛酸钾粉末及其制造方法、摩擦调整材料、树脂组合物、摩擦材料以及摩擦部件 |
KR1020217005771A KR102305363B1 (ko) | 2016-12-13 | 2017-12-04 | 티타늄산칼륨 분말 및 그의 제조 방법, 마찰 조정재, 수지 조성물, 마찰재, 그리고 마찰 부재 |
US17/342,824 US11772982B2 (en) | 2016-12-13 | 2021-06-09 | Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-241259 | 2016-12-13 | ||
JP2016241259 | 2016-12-13 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/347,721 A-371-Of-International US11352265B2 (en) | 2016-12-13 | 2017-12-04 | Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member |
US17/342,824 Division US11772982B2 (en) | 2016-12-13 | 2021-06-09 | Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018110341A1 true WO2018110341A1 (ja) | 2018-06-21 |
Family
ID=62558337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/043434 WO2018110341A1 (ja) | 2016-12-13 | 2017-12-04 | チタン酸カリウム粉末及びその製造方法、摩擦調整材、樹脂組成物、摩擦材、並びに摩擦部材 |
Country Status (6)
Country | Link |
---|---|
US (2) | US11352265B2 (ja) |
EP (1) | EP3556730A4 (ja) |
JP (2) | JP6862473B2 (ja) |
KR (2) | KR102238500B1 (ja) |
CN (2) | CN110062747B (ja) |
WO (1) | WO2018110341A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109694570A (zh) * | 2018-12-25 | 2019-04-30 | 江苏利德尔新材料科技有限公司 | 一种高强度超耐磨mc尼龙复合材料及其制备方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108895101A (zh) * | 2018-09-05 | 2018-11-27 | 安徽龙行密封件有限公司 | 一种改性硅橡胶电梯刹车片的制备方法 |
CN110878802B (zh) * | 2019-10-25 | 2021-04-30 | 山东金麒麟股份有限公司 | 低蠕动噪音摩擦材料、刹车片及其制备方法 |
TWI708866B (zh) * | 2019-12-06 | 2020-11-01 | 財團法人金屬工業研究發展中心 | 具固態潤滑表層的金屬物件及其製造方法 |
CN111561530A (zh) * | 2020-04-23 | 2020-08-21 | 浙江万赛汽车零部件股份有限公司 | 一种高温500度耐磨型刹车片及其制备方法 |
CN112479250B (zh) * | 2020-12-12 | 2022-03-29 | 张家港大塚化学有限公司 | 一种钛酸钾的制备方法 |
CN113004866A (zh) * | 2021-02-04 | 2021-06-22 | 张家港大塚化学有限公司 | 一种环保摩擦材料的制备方法 |
KR102637698B1 (ko) * | 2022-12-07 | 2024-02-19 | 한국건설기술연구원 | 교량받침의 마찰재 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6345122A (ja) * | 1986-08-11 | 1988-02-26 | Kawatetsu Kogyo Kk | チタン酸アルカリの製造方法 |
JPH11228300A (ja) | 1998-02-17 | 1999-08-24 | Kubota Corp | 六チタン酸カリウム単結晶繊維の製造方法 |
JP2000230168A (ja) * | 1999-02-09 | 2000-08-22 | Otsuka Chem Co Ltd | 摩擦材 |
JP2001253712A (ja) | 2000-03-14 | 2001-09-18 | Otsuka Chem Co Ltd | 板状6チタン酸カリウム及び板状4チタン酸カリウム並びにそれらの製造方法及び摩擦材 |
WO2008123046A1 (ja) | 2007-04-04 | 2008-10-16 | Otsuka Chemical Co., Ltd. | チタン酸カリウム及びその製造方法並びに摩擦材及び樹脂組成物 |
JP2008266131A (ja) | 2007-03-29 | 2008-11-06 | Toho Titanium Co Ltd | チタン酸アルカリの製造方法及びこれにより得られたチタン酸アルカリ並びにこれを含む摩擦材 |
WO2014148374A1 (ja) | 2013-03-18 | 2014-09-25 | 東邦チタニウム株式会社 | チタン酸カリウムの製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680209B2 (ja) * | 1984-08-18 | 1994-10-12 | 九州耐火煉瓦株式会社 | チタン酸カリウム長繊維およびチタニア長繊維の製造方法 |
JP3222955B2 (ja) * | 1992-10-28 | 2001-10-29 | 三菱マテリアル株式会社 | 透明導電性粉末及びその製造方法 |
JPH09278905A (ja) * | 1996-04-09 | 1997-10-28 | Kubota Corp | 摩擦材 |
JP4319285B2 (ja) | 1999-04-28 | 2009-08-26 | 大塚化学ホールディングス株式会社 | 粒状8チタン酸カリウムの製造方法 |
DE60117599T2 (de) | 2000-07-31 | 2006-11-09 | Otsuka Chemical Co., Ltd. | Kaliummagnesiumtitanate vom lepidocrosittyp, verfahren zur herstellung desselben und reibungsmaterial |
CN1286611C (zh) * | 2003-07-16 | 2006-11-29 | 宜兴市振奋药用化工厂 | 电焊条用钛酸钾的制造方法 |
CN101679067B (zh) * | 2007-03-29 | 2013-01-16 | 东邦钛株式会社 | 碱金属钛酸盐和碱金属钛酸盐空心体粉末及其制法、以及含有碱金属钛酸盐和碱金属钛酸盐空心体粉末的摩擦材料 |
CN101962808B (zh) * | 2010-06-17 | 2012-05-23 | 马玉馨 | 一种高效节能钛酸钾晶须的制备方法 |
JP2015203473A (ja) | 2014-04-16 | 2015-11-16 | 住友ベークライト株式会社 | ブレーキピストン、ディスクブレーキ、ブレーキピストンの製造方法および熱硬化性樹脂組成物 |
US10364160B2 (en) * | 2014-04-28 | 2019-07-30 | Toho Titanium Co., Ltd. | Process for producing potassium titanate |
-
2017
- 2017-12-04 KR KR1020197011134A patent/KR102238500B1/ko active IP Right Grant
- 2017-12-04 WO PCT/JP2017/043434 patent/WO2018110341A1/ja unknown
- 2017-12-04 US US16/347,721 patent/US11352265B2/en active Active
- 2017-12-04 JP JP2018556583A patent/JP6862473B2/ja active Active
- 2017-12-04 CN CN201780077068.1A patent/CN110062747B/zh active Active
- 2017-12-04 KR KR1020217005771A patent/KR102305363B1/ko active IP Right Grant
- 2017-12-04 EP EP17880104.9A patent/EP3556730A4/en active Pending
- 2017-12-04 CN CN202210116283.0A patent/CN114394617B/zh active Active
-
2020
- 2020-07-13 JP JP2020119669A patent/JP6906090B2/ja active Active
-
2021
- 2021-06-09 US US17/342,824 patent/US11772982B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6345122A (ja) * | 1986-08-11 | 1988-02-26 | Kawatetsu Kogyo Kk | チタン酸アルカリの製造方法 |
JPH11228300A (ja) | 1998-02-17 | 1999-08-24 | Kubota Corp | 六チタン酸カリウム単結晶繊維の製造方法 |
JP2000230168A (ja) * | 1999-02-09 | 2000-08-22 | Otsuka Chem Co Ltd | 摩擦材 |
JP2001253712A (ja) | 2000-03-14 | 2001-09-18 | Otsuka Chem Co Ltd | 板状6チタン酸カリウム及び板状4チタン酸カリウム並びにそれらの製造方法及び摩擦材 |
JP2008266131A (ja) | 2007-03-29 | 2008-11-06 | Toho Titanium Co Ltd | チタン酸アルカリの製造方法及びこれにより得られたチタン酸アルカリ並びにこれを含む摩擦材 |
WO2008123046A1 (ja) | 2007-04-04 | 2008-10-16 | Otsuka Chemical Co., Ltd. | チタン酸カリウム及びその製造方法並びに摩擦材及び樹脂組成物 |
WO2014148374A1 (ja) | 2013-03-18 | 2014-09-25 | 東邦チタニウム株式会社 | チタン酸カリウムの製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109694570A (zh) * | 2018-12-25 | 2019-04-30 | 江苏利德尔新材料科技有限公司 | 一种高强度超耐磨mc尼龙复合材料及其制备方法 |
CN109694570B (zh) * | 2018-12-25 | 2021-08-31 | 江苏利德尔新材料科技有限公司 | 一种高强度超耐磨mc尼龙复合材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3556730A1 (en) | 2019-10-23 |
KR20210027501A (ko) | 2021-03-10 |
CN110062747B (zh) | 2022-07-22 |
KR102305363B1 (ko) | 2021-09-24 |
US20190315630A1 (en) | 2019-10-17 |
EP3556730A4 (en) | 2020-08-12 |
CN114394617B (zh) | 2023-08-15 |
KR102238500B1 (ko) | 2021-04-08 |
US11772982B2 (en) | 2023-10-03 |
JP6906090B2 (ja) | 2021-07-21 |
JPWO2018110341A1 (ja) | 2019-10-24 |
KR20190086663A (ko) | 2019-07-23 |
US20210323835A1 (en) | 2021-10-21 |
JP6862473B2 (ja) | 2021-04-21 |
CN110062747A (zh) | 2019-07-26 |
US11352265B2 (en) | 2022-06-07 |
JP2020186166A (ja) | 2020-11-19 |
CN114394617A (zh) | 2022-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018110341A1 (ja) | チタン酸カリウム粉末及びその製造方法、摩擦調整材、樹脂組成物、摩擦材、並びに摩擦部材 | |
JP6030277B2 (ja) | 多孔質チタン酸塩化合物粒子及びその製造方法 | |
WO2000055093A1 (fr) | Titanate de potassium lamellaire, son procede de fabrication et materiau de friction | |
JP5261757B2 (ja) | 六チタン酸ナトリウム及びその製造方法 | |
JP6487055B2 (ja) | 多孔質チタン酸塩化合物粒子及びその製造方法 | |
JP5133309B2 (ja) | 板状4チタン酸カリウム並びにその製造方法及び摩擦材 | |
JP2020094115A (ja) | 摩擦材組成物、摩擦材組成物を用いた摩擦材及び摩擦部材 | |
JP4435929B2 (ja) | 板状6チタン酸カリウム並びにその製造方法及び摩擦材 | |
JP6765987B2 (ja) | チタン酸塩化合物粒子及びその製造方法、摩擦調整材、樹脂組成物、摩擦材、並びに摩擦部材 | |
JP6084541B2 (ja) | レピドクロサイト型チタン酸塩を含有する樹脂組成物 | |
WO2019176166A1 (ja) | チタン酸アルカリ金属、チタン酸アルカリ金属の製造方法及び摩擦材 | |
JP6445332B2 (ja) | レピドクロサイト型チタン酸塩及びその製造方法、それを含有する無機複合材、樹脂組成物並びに摩擦材 | |
JPH10139894A (ja) | 耐フェード性にすぐれたブレーキ用摩擦材 | |
JP6474716B2 (ja) | 多孔質複合粒子及びその製造方法 | |
JP2000264692A (ja) | 摩擦材 | |
JP6730045B2 (ja) | 摩擦材用α−アルミナ粒子及びα−アルミナ粒子の製造方法 | |
JPWO2019058761A1 (ja) | チタン酸アルカリ金属、チタン酸アルカリ金属の製造方法および摩擦材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17880104 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2018556583 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20197011134 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2017880104 Country of ref document: EP Effective date: 20190715 |