WO2009035166A1 - 非晶質複合チタン酸アルカリ金属組成物及び摩擦材 - Google Patents
非晶質複合チタン酸アルカリ金属組成物及び摩擦材 Download PDFInfo
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- WO2009035166A1 WO2009035166A1 PCT/JP2008/066941 JP2008066941W WO2009035166A1 WO 2009035166 A1 WO2009035166 A1 WO 2009035166A1 JP 2008066941 W JP2008066941 W JP 2008066941W WO 2009035166 A1 WO2009035166 A1 WO 2009035166A1
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- WIPO (PCT)
- Prior art keywords
- alkali metal
- composition
- weight
- titanate
- less
- Prior art date
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- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- -1 alkali metal titanate Chemical class 0.000 title claims abstract description 37
- 239000002783 friction material Substances 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 92
- 239000002585 base Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910052796 boron Inorganic materials 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052788 barium Inorganic materials 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 15
- 150000001340 alkali metals Chemical class 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 229910052791 calcium Inorganic materials 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 description 21
- 239000000835 fiber Substances 0.000 description 19
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 16
- 239000011591 potassium Substances 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 16
- 239000000843 powder Substances 0.000 description 14
- 239000013078 crystal Substances 0.000 description 10
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 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
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000000654 additive Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 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
- 239000000919 ceramic Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000005300 metallic glass Substances 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
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- 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
-
- 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
-
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
- C04B35/62231—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on oxide ceramics
- C04B35/62259—Fibres based on titanium oxide
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- 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
- F16D69/026—Compositions based on an organic binder containing fibres
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/02—Amorphous compounds
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- 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
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/526—Fibers characterised by the length of the fibers
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5264—Fibers characterised by the diameter of the fibers
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- 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
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0065—Inorganic, e.g. non-asbestos mineral fibres
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- 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
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- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
Definitions
- the present invention relates to an amorphous composite alkali metal titanate composition, which is excellent in chemical stability and thermal stability.
- the present invention relates to a crystalline composite Al-titanium titanate metal composition and a friction material compounded with the composition.
- alkali metal titanates are chemically unstable because they have a large amount of alkali components and a layered crystal structure, and at the time of forming the friction material, the alkali metal ions present in the layers are eluted. Therefore, there is a disadvantage that the resin constituting the matrix of the friction material is deteriorated.
- the crystal structure of the alkali metal titanate becomes a tunnel shape, chemical stability is higher.
- Potassium hexatitanate is produced by the melting method as a typical production method. First, the molten raw material is cooled and solidified to prepare a fibrous mass of potassium dititanate, and then the fibrous mass is swollen and separated by a hydration reaction. Next, the separated fiber is acid-treated, the potassium is leached to a composition of potassium hexatitanate, solid-liquid separation is carried out, and heat treatment is carried out to convert it into a hexatidic acid lithium of tunnel structure. Disclosure of Invention (Japanese Patent No. 2 9 4 6 1 0 7)
- the lithium hexatitanate produced by the above-mentioned melting method requires a conversion step from dititanic acid lithium to hexatitanic acid lithium, and the production process is complicated. In addition, theoretical yield is low due to leaching of potassium.
- the shape obtained by this melting method is a plate-like fiber, and it is difficult to make different shapes other than plate-like according to the required performance.
- the object of the present invention is to eliminate the steps of composition conversion and structure conversion required in the conventional manufacturing methods, and to provide a chemically stable, moisture-resistant and thermally stable base material of a friction material. It is an object of the present invention to provide an amorphous composite titanium titanate metal composition suitable as a material.
- amorphous potassium 1-4 titanate alone is inferior in chemical stability and insufficient in moisture absorption resistance, as in the crystal structure. It has been found that coexistence of a fixed amount of S i ⁇ 2 enables chemical stability and moisture resistance.
- the first amorphous composite alkaline metal titanate metal composition according to the present invention has a formula M 2 0. N T i 0 2 (wherein, M is one or more kinds of alkali metal elements, Alkali metal titanate represented by a number of 4): 60 to 90% by weight, S i ⁇ 2 10 to 40%. / Has a composition of 0, an M 2 OZS i 0 2 ⁇ 2.5 .
- the second amorphous composite aluminum titanate metal composition according to the present invention has the general formula M 2
- Alkali metal titanate represented by nT i 0 2 (wherein, M is at least one alkali metal element and n is a number from 1 to 4): 60% by weight or more and less than 90% by weight, S i O 2 : 10% by weight or more and less than 40% by weight, and an oxide of at least one element selected from the group consisting of B, Mg, Al, P, Ca and Z n: more than 0% by weight
- 10 weight 0/0 has the following composition, an M 2 ⁇ / S i 0 2 ⁇ 2.5.
- Third amorphous composite titanate Al force Li metal composition according to the present invention have the general formula Micromax 2 0
- nT i 0 2 (wherein, Micromax is one or more alkali metal elements, eta is the number of 1 to 4) alkali metal titanate represented by: less than 60 weight 0/0 90% by weight or more, S i 2 2 : 10% by weight or more and less than 40% by weight, and at least one selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Nb, and Ba
- the oxides of the elements of the species having a composition of more than 0% by weight and not more than 10% by weight, and M 20 / S i O 2 ⁇ 2.5.
- the fourth amorphous composite alumina titanate metal composition according to the present invention has a general formula M 2 0
- Alkali metal titanate represented by nT i O 2 (wherein, M is at least one alkali metal element and n is a number from 1 to 4): 60% by weight or more and less than 90% by weight, S i O 2: 10 wt% or more and less than 40 weight 0/0, B, Mg, Al, P, ⁇ & ⁇ Pi sigma 11 Tona Ru least one element of the acid I arsenide material is selected from the group: 0 wt% 10% by weight or less and at least one element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Nb and Ba. oxide: 0 wt% to have a composition of ultra-forte 10 weight 0/0 or less, a M 2 O / S i 0 2 ⁇ 2.5.
- Fig. 1 shows the flat amorphous composite titanium titanate aluminum alloy obtained in Preparation Example 1. It is the microscope picture by the sliding type electron microscope of genus composition powder.
- FIG. 2 is a scanning electron microscopic photomicrograph of the flat amorphous composite composite of aluminum titanate metal titanate composition powder obtained in Preparation Example 1.
- FIG. 3 is a scanning electron microscopic photomicrograph of the fibrous amorphous composite composite metal titanate composition fiber obtained in Preparation Example 2.
- FIG. 4 is a scanning electron micrograph of a spherical amorphous composite composite of an aluminum complex metal titanate composition obtained in Preparation Example 3.
- the amorphous composite alkali metal titanate composition according to the present invention has a general formula M 2 0 ′ nT i 0 2 (wherein, M is one or two or more alkali metal elements, n is and 1-4 number) in alkali metal titanate 6 0 wt% or more, it expressed, comprise S i ⁇ 2 1 0 wt% or more, and M 2 ⁇ _ZS i 0 2 ⁇ 2.
- An oxide of at least one element selected from the group consisting of i, Cu, Y, Zr, Nb and Ba can be included.
- the amorphous composite aluminum titanate metal composition according to the present invention is suitably used as a base material of a friction material, and imparts smooth friction characteristics by blending 3 to 50% by weight as a base material. be able to.
- the alkali metal element is a Group 1 element of the Periodic Table of the Elements, and specifically, it is Li, Na, K, or.
- the amorphous nature of the alkali metal titanate can be obtained by heating and melting the starting material mixture and subjecting the melt to a quenching treatment.
- the quenching process is typically performed by a twin roll method, and while rotating a pair of opposing metal rolls at high speed, Five
- the melt is allowed to flow down the gap, and the melt is quenched in contact with the metal roll, passes through the opening gap, and is discharged downward as a flaky solid. It becomes amorphous due to its quenching effect.
- the amorphous alkali metal titanate thus obtained can be obtained by co-containing S i 2 2 even in the case of a titanic acid in which the number of n is 4 or less in the formula M 2 0 ⁇ n T i O 2. Since the excellent chemical stability and moisture absorption resistance can be ensured, the elution of aluminum ions is prevented during molding of the friction material, and the matrix composition resin of the friction material is not adversely affected. .
- the amorphous alkali metal titanate is stable in the formula M 20 ⁇ n T i 0 2 in the case of a titanic acid in which the number of n is greater than 4 even though it does not contain S i 0 2 S i 0 2 , B, M g, A l, P, C a, Z n, V, C r, M n, F e, C o, N i, C u, Y, Z r, N You may contain oxides, such as b and Ba.
- the amorphous structure of alkali metal titanate causes softening and melting reaction according to the friction conditions (temperature, speed, pressure, etc.), and an appropriate amount of Al- It has been found that the supply of the component and the titanium component has the effect of significantly improving the wear resistance under various conditions. In order to obtain these effects, it is preferable that the content of aluminum titanate in the amorphous composite titanium titanate metal composition be 60% by weight or more.
- the amorphous composite alkali metal titanate composition contains not less than 10% by weight of S i O 2 and the ratio of M 20 to S i O 2 of alkali metal titanate. That is, M 2 Z S i 2 is specified to 2.5 or less.
- the content of SiO 2 contained in the amorphous composite aluminum titanate metal composition is 10% by weight or more, the content of the alkali metal titanate is 90% by weight or less.
- the alkali metal titanate is 60% by weight or more, SiO 2 is 40% by weight or less.
- the oxides of B, Mg, Al, P, and & and 2! 1 have the effect of improving the chemical stability'stability, and also have the function of improving the thermal stability. Therefore, it is desirable to include an oxide of at least one element selected from the group consisting of B, Mg, Al, P, Ca and Z n. If the content is too high, the compounding balance between aluminum titanate and Si iO 2 will be lost, so the upper limit is made 10% by weight.
- the content of aluminum titanate is less than 90% by weight, S i ⁇ 2 is less than 40% by weight.
- the oxide of at least one element selected from the group is included, the amount of titanium titanate is less than 90% by weight, and SiO 2 is less than 40% by weight.
- an oxide of at least one element selected from the group consisting of B, M g, Al, P, C a and Z n is further contained in addition to the oxides of these elements, The same is true.
- the amorphous composite alkali metal titanate composition of the present invention is a friction material, and more specifically, a brake lining for a braking device of an automobile, a railway vehicle, an aircraft, an industrial machine, etc., a disc pad, a clutch facing, etc. It is suitably applied as a base material of a friction material that constitutes a sliding surface.
- non-crystalline composite alkali metal titanate composition applied as a base material of a friction material is 3 to 50 weight%.
- the friction material together with the amorphous composite aluminum titanate metal composition, if desired, other known types of other materials (for example, polyamide fiber, ferrite fiber, steel fiber, copper fiber, Glass fiber, ceramic fiber, crystalline titanic acid compound fiber, etc. can be compounded in a composite manner.
- the base material is usually treated with a silane coupling agent or a titanate coupling agent for the purpose of improving the dispersibility and binding to the binder resin. It is applied and used according to the law.
- the friction material may, if desired, be a known friction and wear modifier (for example, natural or synthetic rubber powder, Kash-1 resin powder, organic powder, graphite, molybdenum disulfide, inorganic powder, metal powder, oxide powder, etc.
- a known friction and wear modifier for example, natural or synthetic rubber powder, Kash-1 resin powder, organic powder, graphite, molybdenum disulfide, inorganic powder, metal powder, oxide powder, etc.
- various additives eg, fungicides, lubricants, grinding agents, etc.
- a base material is dispersed in a binder resin, and if necessary, a friction and wear modifier and additives are added and uniformly mixed to prepare a raw material composition.
- mold molding is performed, and heating under pressure (approx. Binder molding is carried out at 10 to 40 MP a, temperature about 150 to 200 ° C.), and after removal from the mold, heat treatment is optionally carried out in a heating furnace (1 500 to 200 ° C.). And holding for about 1 to 12 hours), and then subjecting the molded body to machining and polishing to finish it as a friction material having a predetermined shape.
- Preparation Example 1 Flat amorphous composite titanium oxide metal complex metal composition
- the mixture is weighed so that the molar ratio is 2 and the homogeneous mixture is heated at 800 for 2 hours to obtain a powder of potassium titanate (KsO ⁇ 2T i 0 2 ).
- Silica (S i O 2) and magnesium hydroxide (Mg (OH) 2 ) were added to the obtained titanium titanate (K 2 0 2 T i 0 2 ), KsO ⁇ 2 T i Os / S i 0
- the obtained melt is poured between metal twin rolls rotating at a circumferential speed of 3.6 m / s, and after quenching, the resulting quenched solidified product is crushed by a hammer mill to obtain a powder.
- the composition substantially agrees with the raw material composition, and the average passing diameter is about 300 m and the average thickness is about It was confirmed that the composition was a flat amorphous composite amorphous titanium titanate metal composition of 80 m.
- test composition according to Preparation Example 1 is shown as No. 2 in Table 1.
- T i OsZKzO 2 ⁇ , 2 ⁇ i 0 2 / / S i 0 2 / F e 2
- T i OzZKzO 2 K 2 0 ⁇ 2 T i O 2 / S i O 2 / M g O / Z
- T i Z 2 ZK 2 0 1.7, ⁇ 2 0 ⁇ 1.
- T i 0 2 ZK 2 0 3 K 2 0 ⁇ ⁇ 3 T i O 2 / S i O 2 /
- Preparation Example 2 Amorphous Composite Alkali Metal Titanate Titanate in Fiber Form
- the molar ratio of lithium carbonate (K 2 C 3 O 3 ) to titanium dioxide (T i O 2 ) is changed as in Preparation Example 1 the titanate force Li um obtained by the method ( ⁇ 2 0 ⁇ 1.
- Add 7 T i ⁇ 2 / S i O 2 / A 1 2 Q 3 78/1 8 4 weight ratio, The mixture is put in a platinum crucible and melted at 115.degree. C. for 2 hours.
- the obtained melt was transferred to a heating crucible having a nozzle hole at the bottom, and a trickle flow from the tip of the nozzle was made, and compressed air was blown away to obtain a fiber.
- the resulting fibers were observed with a scanning electron microscope, and the photomicrograph is shown in FIG.
- the composition was determined by X-ray diffraction to determine the presence or absence of the crystal phase, and fluorescent X-ray analysis was performed. It was confirmed that the composite was a fibrous amorphous composite alumina titanate metal composition having an average aspect ratio (length ⁇ diameter) of 0 ⁇ m and 50.
- test composition according to Preparation Example 2 is shown as No. 3 in Table 1.
- Lithium titanate (K 2 O 2 2. 2.8) obtained by the same method as in Production Example 1 by changing the molar ratio of carbonated lithium (K 2 C 0 3 ) and titanium dioxide (T i O 2 ).
- T i O 2), silica (S i 0 2) and calcium carbonate (C a C_ ⁇ 3), kappa 2 ⁇ ⁇ 2.8 T i ⁇ 2 / S i O 2 / C a 0 8 2/1 0
- the mixture was sprayed to a weight ratio of / 6, and the mixture was sprayed by a spraying apparatus (CASTON DYN DS 8000, manufactured by Nippon Tek Co., Ltd.), and quenched in water to obtain a powder.
- the obtained powder was observed with a scanning electron microscope, and its photomicrograph is shown in FIG.
- a spherical amorphous composite titanic acid having an average particle diameter of about 30 m with a composition substantially identical to the raw material composition. It was confirmed that it was an aluminum metal composition.
- test composition according to Preparation Example 3 is shown as No. 4 in Table 1.
- No. 14 is an example of known crystalline potassium hexatitanate.
- Mixtures formulated to give a Ti Os / KsO molar ratio of 2 at 1 200 ° C 1 The solution is heated and melted, and the resulting melt is solidified by cooling to form a fiber mass of potassium dititanate, and the fiber mass is swollen and separated by a hydration reaction, subjected to acid treatment and force dissolution treatment. Thereafter, it was manufactured by performing solid-liquid separation and heat treatment.
- the average fiber length is about 150 ⁇ m, and the average fiber width is about 30 ⁇ m.
- Nos. 1 to 6 are examples of the present invention
- Nos. 1 to 13 are comparative examples
- No. 14 is a conventional example of a crystal structure.
- No. 1 1 is an example not containing S i 2 2
- Example No. 1 2 is an example where the value of M 2 O Z S i O 2 is larger than the value 2.5 of the present invention
- No. 1 3 is S i O This is an example in which the content of 2 is small, and the value of MzO / S i 2 2 is larger than the value 2.5 of the present invention.
- Examples No. 1 to No. 6 of the present invention have a smaller weight increase rate due to water absorption compared to Comparative Examples No. 1 to No. 13 and have excellent moisture absorption resistance. It is shown that.
- No. 14 has a smaller weight increase rate due to water absorption than the example of the present invention, it is crystalline, and as described above, it is converted from potassium dititanate to potassium hexatitanate. Since the process is required, the manufacturing process is complicated, and potassium leaching occurs, so that the theoretical yield is low.
- the raw material for the friction material is, by weight, 20% base component, 4% Kepler pulp, 17% copper fiber, 4% ceramic fiber, 10% abrasive material, 5% strength, 4% organic powder Lubricant 6%, barium sulfate 20%, fuyol resin 1 8066941
- test friction materials using the respective compositions No. 1 to No. 6 and No. 11 to No. 14 as base materials in Table 2 were each 0% and No. 1 a ⁇ It represents as No. 6 a and No. 1 1 a to No. 1 4 a.
- test friction material was subjected to a wear test according to J AS OC 4 2 7 “Brake lining, pad wear dynamometer test method”, friction coefficient), pad wear (mm) and disk wear (; For um), the results shown in Table 2 were obtained.
- the coefficient of friction is the average coefficient of friction during steady state at each temperature, and the amount of pad wear and the amount of disc wear are the average amount of wear per 100 cycles of braking.
- the embodiments No. 1a to No. 6a of the present invention correspond to the low temperature region corresponding to the relatively low initial braking speed as compared with the comparative examples No. 1 1a and No. 1 2a.
- Pads and discs have high friction coefficient from (100 ° C) to high temperature range (400 ° C) corresponding to high braking initial velocity accompanied by temperature rise of the friction surface. Low amount, excellent in wear resistance. This is considered in the embodiment of the present invention to form a stable fluidized bed at the friction interface from the low temperature zone to the high temperature zone and to form a uniform transfer layer on the mating disk surface. .
- No. 13 a has a high coefficient of friction substantially equivalent to that of the embodiment of the present invention
- the pad wear amount is larger and the disk wear amount is larger than the embodiment of the present invention. This is considered to be because the transfer layer formed on the disk surface is more fragile than the embodiment of the present invention.
- No. 14 a is equal to or more than the embodiment of the present invention in terms of the coefficient of friction, but the amount of pad wear and disk wear is larger than that of the embodiment of the present invention. This is considered to be due to the fact that No. 14 a is crystalline and has a high melting point and does not cause a softening phenomenon, so it is somewhat inferior to the stable formation of the fluidized bed at the friction interface as compared with the example of the present invention.
- the amorphous composite alkali metal titanate composition of the present invention is chemically stable and excellent in moisture absorption resistance, and when applied to a friction material such as a disk pad of a car, it can be used as a conventional crystal. Compared to the quality alkali metal hexatitanate, it is possible to obtain the friction and wear characteristics with improved wear resistance and facing damage while having almost the same stability of friction coefficient under high temperature and high load.
- the amorphous composite aluminum titanate metal composition of the present invention has an advantage of being able to optionally produce a flat, fibrous or spherical composition by selecting an appropriate production method. .
- the flat shape is suitably selected in terms of pore formation and strength improvement, and a typical size is an average diameter of 10 to 600 jum and an average thickness of 3 to 200 ⁇ m.
- the fiber shape is suitably selected in view of the further improvement of pore formation and strength, and the typical size has an average diameter of 5 to 100 ⁇ and an aspect ratio (diameter to diameter) of 10 or more.
- the spherical shape is suitably selected in terms of flowability and dispersibility, and the typical size is an average particle size of 5 to 5: L O O ni.
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US12/677,163 US8093171B2 (en) | 2007-09-14 | 2008-09-12 | Noncrystalline composite alkali metal titanate composition and friction material |
CN200880107761.XA CN101801851B (zh) | 2007-09-14 | 2008-09-12 | 非晶性复合碱金属钛酸盐组合物和摩擦材料 |
EP08830909.1A EP2189419B1 (en) | 2007-09-14 | 2008-09-12 | Noncrystalline composite alkali metal titanate composition and friction material |
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JP2016190192A (ja) * | 2015-03-31 | 2016-11-10 | 株式会社クボタ | 複合イオン交換体並びにそれを備えたイオン吸着装置及び水処理システム |
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JP5535509B2 (ja) * | 2009-03-31 | 2014-07-02 | 株式会社クボタ | 摩擦材 |
JP6042599B2 (ja) * | 2011-03-22 | 2016-12-14 | 日清紡ブレーキ株式会社 | 摩擦材 |
JP6563676B2 (ja) * | 2015-04-27 | 2019-08-21 | 曙ブレーキ工業株式会社 | 摩擦材組成物および摩擦材とその製造方法 |
CN108137341B (zh) * | 2015-09-24 | 2020-03-31 | 大塚化学株式会社 | 多孔质钛酸盐化合物颗粒及其制造方法 |
US10344817B2 (en) * | 2015-11-30 | 2019-07-09 | Hyundai Motor Company | Vehicle brake pad |
JP7078359B2 (ja) * | 2017-06-27 | 2022-05-31 | 曙ブレーキ工業株式会社 | 焼結摩擦材及び焼結摩擦材の製造方法 |
JP6494884B1 (ja) * | 2017-09-21 | 2019-04-03 | 東邦チタニウム株式会社 | 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 |
WO2019176166A1 (ja) * | 2018-03-13 | 2019-09-19 | 東邦チタニウム株式会社 | 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 |
EP4194404A1 (en) * | 2020-08-04 | 2023-06-14 | Otsuka Chemical Co., Ltd. | Friction adjusting material, friction material composition, friction material, and friction member |
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 |
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CN101801851B (zh) | 2012-10-03 |
KR101205075B1 (ko) | 2012-11-26 |
CA2699462A1 (en) | 2009-03-19 |
KR20100040977A (ko) | 2010-04-21 |
US8093171B2 (en) | 2012-01-10 |
EP2189419A1 (en) | 2010-05-26 |
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