CN102031088A - Inorganic-organic composite friction material and preparation method thereof - Google Patents
Inorganic-organic composite friction material and preparation method thereof Download PDFInfo
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- 239000002783 friction material Substances 0.000 title claims abstract description 66
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000002861 polymer material Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 60
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 18
- 230000032683 aging Effects 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 229920000620 organic polymer Polymers 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910019142 PO4 Inorganic materials 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- 239000010452 phosphate Substances 0.000 claims description 9
- 239000007822 coupling agent Substances 0.000 claims description 8
- 238000007669 thermal treatment Methods 0.000 claims description 8
- 208000005156 Dehydration Diseases 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- 150000003016 phosphoric acids Chemical class 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical group 0.000 claims description 5
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 4
- 229910000000 metal hydroxide Inorganic materials 0.000 claims description 4
- 150000004692 metal hydroxides Chemical class 0.000 claims description 4
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical class [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims description 3
- 125000005341 metaphosphate group Chemical group 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 5
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000010792 warming Methods 0.000 description 14
- 239000000919 ceramic Substances 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 8
- 238000012856 packing Methods 0.000 description 8
- 239000006087 Silane Coupling Agent Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 3
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 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
- 239000010953 base metal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052914 metal silicate Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Braking Arrangements (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to an inorganic-organic composite friction material and a preparation method thereof and belongs to the field of composite materials. The friction material consists of liquid inorganic salt or oxide, a curing agent, organic high polymer and other fillers. The preparation method comprises the following steps of: uniformly blending the raw materials according to proportion, casting the mixture for molding or coating the mixture on the surface, and baking, curing and performing heat treatment under a certain temperature control program. In the friction material, the inorganic substance serves as a skeleton structure, so that the friction material has high mechanical property and chemical stability and a wide application temperature range; the organic high polymer material is filled to improve the brittleness of the friction material; and a shift film is generated on the friction interface to reduce abrasion of the friction material and a coupling surface. The friction material has high wear resistance and comprehensive performance and the preparation process is simple.
Description
Technical field
The present invention relates to a kind of inorganic-organic composite friction material and preparation method thereof, belong to field of compound material.
Background technology
Continuous development along with new and high technology, it is harsh day by day that the working conditions of engineering machinery, equipment and member becomes, and general material does not have enough physical strengths and wear resistance, after being subjected to long-time vibratory impulse and mechanical friction effect, very quick-wearing, and even inefficacy.
And, also presenting diversification for the demand of friction materials along with science and technology development, the friction materials that uses mainly contains three classes at present: resin base, metal matrix, ceramic base.The organic resin base frication material is widely used in anticorrosion and wear-resistant coating, matrix is an organic polymer in the organic resin base frication material, elasticity modulus of materials is less, high and low temperature resistance is relatively poor, so after higher envrionment temperature or frictional heat, friction materials can soften, be out of shape, material becomes fragile under the low temperature, easily occurrence of large-area damage, material property also can have greatly changed.Simultaneously, problem of aging is also restricting its work-ing life.
Abrasion-proof ceramic coat is then owing to have good anticorrosive effect and excellent mechanical endurance energy concurrently, successfully be applied in the complicated dynamic duty environment, but abrasion-proof ceramic coat is relatively large to the wear damage of friction pair face, and preparation technology's relative complex of abrasion-proof ceramic coat, cost height, as the method that can prepare abrasion-proof ceramic coat thermospray, physical vapor deposition (PVD), chemical vapor deposition (CVD) etc. are arranged.
Though the metal matrix friction materials has higher mechanical property and resistance to elevated temperatures, its wear resistance then can not meet the demands, and friction noise is also bigger.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art, a kind of inorganic-organic composite friction material with good wear resistance, high and low temperature resistance and mechanical property and preparation method thereof is provided.
A kind of inorganic-organic composite friction material, it is characterized in that: be made up of by following mass percent following composition: base-material: colloidal alumina or silicate solutions or phosphate solution, solids content are 40wt%～95wt%; Solidifying agent: the chemical reaction mol ratio according to base-material and solidifying agent is determined its content, and scope is 0wt%～40wt%; The major function filler: organic polymer, content are 5wt%～40wt%; Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound.
According to claim 1 inorganic-organic composite friction material, it is characterized in that:
Above-mentioned inorganic-preparation method of organic composite friction material, it is characterized in that may further comprise the steps:
Step 1, following raw materials according is pressed mass ratio mix, stir: base-material: colloidal alumina or silicate solutions or phosphate solution, solids content are 40wt%～95wt%; Solidifying agent: 0wt%～30wt%; The major function filler: organic polymer, content are 5wt%～40wt%; Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound; Step 2, the material for preparing is cast in the mould, perhaps be coated in the surface; Ageing under step 3, the room temperature, thermal dehydration, heat preservation solidification, thermal treatment then.
First kind: a kind of alumina type composite friction material is a base-material with the colloidal alumina generally, need not solidifying agent, and it is formulated directly to add filler.Its mass percent is: colloidal alumina 60wt%～95wt%, and the major function filler: organic polymer, content are 5wt%～40wt%; Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound.
The preparation method of above-mentioned alumina type composite friction material comprises following process: (1), the raw material of moiety is pressed mass ratio mix stirs; (2), the material for preparing is cast in the mould, perhaps be coated in the surface; (3), different according to the type and the material thickness of base-material and solidifying agent, ageing is 8～20 hours under the room temperature, 80～100 ℃ of thermal dehydrations 1～2 hour, then 120～200 ℃ of heat preservation solidification 2～4 hours, according to the kind difference of institute's filled high polymer material, be higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes again.
Second kind: a kind of silicates composite friction material is base-material with the alkalimetal silicate, and adding solidifying agent and filler etc. are formulated.Its mass percent is: alkalimetal silicate 40wt%～75wt%; Solidifying agent is metal oxide or metal hydroxides or silicide or Si oxide or phosphoric acid salt or borate, content 20wt%～40wt%, and the major function filler: organic polymer, content are 5wt%～40wt%; Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound.
The preparation method of above-mentioned silicates composite friction material comprises following process: (1), the raw material of moiety is pressed mass ratio mix stirs; (2), the material for preparing is cast in the mould, perhaps be coated in the surface; (3), different according to the type and the material thickness of base-material and solidifying agent, ageing is 4～40 hours under the room temperature, 100～140 ℃ of thermal dehydrations 4～12 hours, then 120～200 ℃ of heat preservation solidification 1～4 hour, according to the kind difference of institute's filled high polymer material, be higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes again.
The third: a kind of phosphoric acid salt composite friction material is to be base-material by acid phosphate or metaphosphate or pyrophosphate salt, and it is formulated to add solidifying agent and filler etc.Solidifying agent is metal oxide or metal hydroxides or silicate or borate.Its mass percent is: phosphoric acid salt 40wt%～70wt%; Curing agent content 20wt%～40wt%, the major function filler: organic polymer, content are 5wt%～40wt%; Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound.
The preparation method of above-mentioned phosphoric acid salt composite friction material comprises following process (1), the raw material of moiety is pressed the mass ratio mixing, stirs; (2), the material for preparing is cast in the mould, perhaps be coated in the surface; (3), different according to the type and the material thickness of base-material and solidifying agent, ageing is 4～40 hours under the room temperature, 100～140 ℃ of insulations 4～12 hours,, be higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes again according to the kind difference of institute's filled high polymer material.
The base-material of friction materials of the present invention is liquid inorganic salt or oxide compound, it is the class scope formed such as inorganic salt, mineral acid, inorganic base metal and metal oxide, an oxyhydroxide solidified inorganics at a lower temperature quite widely, mainly comprise: silicate solutions or phosphate solution or colloidal alumina, high temperature resistant, the intensity height, weather resistance is good, and is cheap, and pollution-free, easy construction.Yet pure such inorganic rerum natura is crisp, wear resisting property is not enough.
Add organic resin modified, improve the toughness of material to a certain extent.According to the actual requirements, tetrafluoroethylene, molybdenumdisulphide, graphite, carbon fiber, glass fibre etc. be can also add and wear resisting property and toughness improved.
With the skeleton structure of the inorganics after the curing dehydration as material, make friction materials obtain higher mechanical property and high and low temperature resistance, and the adding of organic polymer material has improved the wear resistance and the toughness of friction materials, coupling agent then improves the interfacial adhesion power between the different components, other functional stuffings are used for improving wear resistance, performances such as resistance to impact shock, obtain a kind of good friction materials of over-all properties that has, and with traditional be matrix with the organic polymer, the friction materials that adds mineral filler compares, and has better mechanical property and high and low temperature resistance.Can form inierpeneirating network structure as 65wt% colloidal alumina, epoxy phenolics and 15% other fillers of 20%, help obtaining higher modulus of elasticity, resistance to impact shock greatly, the then auxiliary wear resisting property that improves of other functional stuffings.
Generally speaking, friction materials of the present invention have higher mechanical property,, good chemical stability, thermostability and characteristics such as wear-resistant.Wherein, key is that inorganics can obtain mechanical property and thermostability preferably as skeleton structure, behind the interpolation macromolecule resin, improved the toughness of material, having improved the wear resistance of material, be a kind of friction materials of high comprehensive performance, and preparation technology is simple.
Embodiment
Embodiment 1:A kind of inorganic-organic composite friction material, colloidal alumina 75wt%(solid content), organic polymer polybenzoate powder 20wt%, silane coupling agent 0.2wt% and low friction compound graphite 4.8wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 16 hours under the room temperature;
(3), 90 ℃ down insulation be warming up to 150 ℃ after one hour, be incubated one hour, be warming up to about 400 ℃ insulation again 10-30 minute, cool off, polish, be processed into required surface or shape.
Embodiment 2:A kind of inorganic-organic composite friction material, colloidal alumina 60wt%(solid content), polybenzoate powder 30wt%, silane coupling agent 0.2wt% and graphite 9.8wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 16 hours under the room temperature;
(3), 90 ℃ down insulation be warming up to 150 ℃ after one hour, be incubated one hour, be warming up to again about 400 ℃ and be incubated 10-30 minute, polish, be processed into required surface or shape.
Embodiment 3:A kind of inorganic-organic composite friction material, colloidal alumina 95wt%(solid content), polybenzoate powder 4.8wt% and silane coupling agent 0.2wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 16 hours under the room temperature;
(3), 90 ℃ down insulation be warming up to 150 ℃ after one hour, be incubated one hour, be warming up to again about 400 ℃ and be incubated 10-30 minute, polish, be processed into required surface or shape.
Embodiment 4:A kind of inorganic-organic composite friction material, aluminium dihydrogen phosphate 60wt%(solid content), carbon fiber 15wt%, polybenzoate 15wt%, nano aluminium oxide 5wt%, silane coupling agent 0.2wt% and graphite 4.8wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 4 hours under the room temperature;
(3), 120 ℃ of down insulations 8 hours, be warming up to 150 ℃ then, be incubated one hour, be warming up to again about 400 ℃ and be incubated 10-30 minute, polish, be processed into required surface or shape.
Embodiment 5:A kind of inorganic-organic composite friction material, phosphate dihydrogen aluminum solution 95wt%(solid content), polyhexamethylene adipamide 4.8wt% and silane coupling agent 0.2wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 4 hours under the room temperature;
(3), 120 ℃ of down insulations 8 hours, be warming up to 150 ℃ then, be incubated one hour, be warming up to again about 220 ℃ and be incubated 20-30 minute, polish, be processed into required surface or shape.
?
Embodiment 6:A kind of inorganic-organic composite friction material, its composition and mass percent: sodium silicate solution 60wt%(solid content), alumina gel 15wt%(solidifying agent), polyhexamethylene adipamide 10wt%, carbon fiber 10wt%, silane coupling agent 0.2wt% and graphite 4.8wt%.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the mass ratio mixing press at the raw material of moiety end, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 8 hours under the room temperature;
(3), 120 ℃ of down insulations 8 hours, be warming up to about 220 ℃ insulation again 20-30 minute, polish, be processed into the polishing of required surface or shape, be processed into required surface or shape.
Embodiment 7:A kind of inorganic-organic composite friction material, its composition and mass percent: sodium silicate solution 78wt%(solid content), alumina gel 17wt%(solidifying agent) and polybenzoate 5wt%.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 8 hours under the room temperature;
(3), 120 ℃ down insulation be warming up to about 400 ℃ after 8 hours, be incubated 30 minutes, polish, be processed into required surface or shape.
Embodiment 8:A kind of inorganic-organic composite friction material, colloidal alumina 50wt%(solid content), polybenzoate powder 25wt%, carbon fiber 20wt%, silane coupling agent 0.2wt% and graphite 4.8wt% its composition and mass percent:.
Utilize said ratio to prepare friction materials, may further comprise the steps:
(1), the raw material of moiety pressed mass ratio mix, stir;
(2), the material that will mix be coated in operation surface or the mould of packing in, ageing is more than 16 hours under the room temperature;
(3), 90 ℃ down insulation be warming up to 150 ℃ after one hour, be incubated one hour, be warming up to about 400 ℃ insulation again 10-30 minute, cool off, polish, be processed into required surface or shape.
Utilize WDW-5000N microcomputer control electronics universal testing machine testing friction elasticity modulus of materials, testing friction coefficient and abrasion loss on the vertical omnipotent tester for friction between of WMM-W1-, to the mill material is GCr15, and the Applicable temperature of friction materials is to calculate according to the material parameter of inorganic materials matrix and the organic macromolecule glass transition of being filled and fusing point to get.
Embodiment Properties of Friction Materials table
| ? | Young's modulus | Frictional coefficient | Applicable temperature | Abrasion loss mm 3/m |
| Embodiment one material | 4.1?GPa | 0.35 | -150～260℃ | 2.4×10 -4 |
| Embodiment two materials | 3.4?GPa | 0.33 | -150～300℃ | 1.3×10 -3 |
| Embodiment three materials | 5.7?GPa | 0.39 | -150～300℃ | 1.5×10 -3 |
| Embodiment four materials | 3.4?GPa | 0.31 | -150～300℃ | 0.9×10 -3 |
| Embodiment five materials | 4.3?GPa | 0.34 | -150～180℃ | 0.8×10 -3 |
| Embodiment six materials | 3.8?GPa | 0.33 | -150～180℃ | 1.0×10 -3 |
| Embodiment seven materials | 4.7?GPa | 0.37 | -150～300℃ | 0.9×10 -3 |
| Embodiment eight materials | 1.9?GPa | 0.28 | -150～300℃ | 1.5×10 -1 |
From the performance table of embodiment friction materials as can be seen, the friction materials over-all properties of the present invention's preparation is good, wherein, the combination of embodiment 1 content is more moderate, abrasion loss is minimum, and inorganic content in the embodiment 8 (containing solidifying agent) is lower than 60%, and performance is poor.Integrated survey, friction materials Young's modulus of the present invention is than the high order of magnitude of resin-matrix friction material, than low one or two order of magnitude of ceramic-based friction material, frictional coefficient, abrasion loss and resin-matrix friction material are suitable, and be high two more than the order of magnitude than ceramic-based friction material; Applicable temperature is narrow than ceramic-based friction material, and is wide than resin-matrix friction material, can adjust simultaneously and add the required Applicable temperature of organic macromolecule kind acquisition, and temperature stability is good.
Claims (8)
1. inorganic-organic composite friction material is characterized in that: be made up of by following mass percent following composition:
Base-material: colloidal alumina or silicate solutions or phosphate solution, solids content are 40wt%～95wt%; Chemical reaction mol ratio according to base-material and solidifying agent is determined its content, and the curing agent content scope is: 0wt%～30wt%;
The major function filler: organic polymer, content are 5wt%～40wt%;
Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound.
2. according to claim 1 inorganic-organic composite friction material, it is characterized in that:
Above-mentioned base-material is a colloidal alumina, and its solids content is 60wt%～95wt%;
Above-mentioned solidifying agent, its content are 0.
3. according to claim 1 inorganic-organic composite friction material, it is characterized in that:
Above-mentioned base-material is an alkalimetal silicate, and its solids content is 40wt%～75wt%;
Above-mentioned solidifying agent is metal oxide or metal hydroxides or silicide or Si oxide or phosphoric acid salt or borate, and content is 20wt%～40wt%.
4. according to claim 1 inorganic-organic composite friction material, it is characterized in that:
Above-mentioned base-material is acid phosphate or metaphosphate or pyrophosphate salt, and its solids content is 40wt%～70wt%;
Above-mentioned solidifying agent is 20wt%～40wt%.
5. the preparation method of inorganic-organic composite friction material is characterized in that may further comprise the steps:
Step 1, following raw materials according pressed mass ratio mix, stir:
Base-material: colloidal alumina or silicate solutions or phosphate solution, solids content are 40wt%～95wt%;
Solidifying agent: 0wt%～30wt%;
The major function filler: organic polymer, content are 5wt%～40wt%;
Other fillers: 0wt%～1wt% coupling agent, 0wt%～10wt% fortifying fibre, 0wt%～10wt% low friction compound;
Step 2, the material for preparing is cast in the mould, perhaps be coated in the surface;
Ageing under step 3, the room temperature, thermal dehydration, heat preservation solidification, thermal treatment then.
6. according to claim 5 inorganic-preparation method of organic composite friction material, it is characterized in that:
Above-mentioned base-material is a colloidal alumina, and its solids content is 60wt%～95wt%;
Above-mentioned solidifying agent, its content are 0;
Above-mentioned steps three detailed processes are as follows: ageing is 8～20 hours under the room temperature, according to the material thickness difference, 80～100 ℃ of thermal dehydrations 1～2 hour, then 120～200 ℃ of heat preservation solidification 2～4 hours, according to the kind difference of institute's filled high polymer material, be higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes again.
7. according to claim 5 inorganic-preparation method of organic composite friction material, it is characterized in that:
Above-mentioned base-material is an alkalimetal silicate, and its solids content is 40wt%～75wt%;
Above-mentioned solidifying agent is metal oxide or metal hydroxides or silicide or Si oxide or phosphoric acid salt or borate, and content is 20wt%～40wt%;
Above-mentioned steps three detailed processes are as follows: ageing is 4～40 hours under the room temperature, according to the material thickness difference, 100～140 ℃ of thermal dehydrations 4～12 hours, then 120～200 ℃ of heat preservation solidification 1～4 hour, according to the kind difference of institute's filled high polymer material, be higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes again.
8. according to claim 5 inorganic-preparation method of organic composite friction material, it is characterized in that:
Above-mentioned base-material is acid phosphate or metaphosphate or pyrophosphate salt, and its solids content is 40wt%～70wt%;
Above-mentioned solidifying agent is 20wt%～40wt%;
Above-mentioned steps three detailed processes are as follows: ageing is 4～40 hours under the room temperature, according to the material thickness difference, 100～140 ℃ of insulations 4～12 hours, again according to the kind difference of institute's filled high polymer material, is higher than 10～30 ℃ of thermal treatments of its fusing point 10～100 minutes.
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| CN102031088B (en) | 2013-03-13 |
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