CN104140784A - Ceramic-based friction material with high heat-conducting property - Google Patents
Ceramic-based friction material with high heat-conducting property Download PDFInfo
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- CN104140784A CN104140784A CN201410365627.7A CN201410365627A CN104140784A CN 104140784 A CN104140784 A CN 104140784A CN 201410365627 A CN201410365627 A CN 201410365627A CN 104140784 A CN104140784 A CN 104140784A
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Abstract
The invention discloses a ceramic-based friction material with a high heat-conducting property. The ceramic-based friction material with the high heat-conducting property is characterized by comprising, by weight part, 35-50 parts of cashew nut shell oil modified phenolic resin, 15-30 parts of kieselguhr, 1-8 parts of carbon fibers, 11-30 parts of boride, 1-5 parts of boride tetramethylammonium hydroxide, 0.5-5.5 parts of quartz sand, 15-20 parts of magnesium carbonate, 1-5 parts of barium carbonate, 3-11 parts of zirconium silicate, 6-18 parts of silicon nitride, 3-8 parts of diboron trioxide, 15-20 parts of talc, 10-31 parts of sorbitan monooleate, 0.5-3.2 parts of hydrophobic-modification nanoscale silicon oxide, 2-9 parts of hornblende, 1.8-13.5 parts of cadmium sulfate, 1.5-3.9 parts of zinc sulfate, 5-11 parts of borax, 3-6 parts of titanium oxide and 1-5 parts of titanium carbide. The ceramic-based friction material with the high heat-conducting property has the advantages of being excellent in heat-conducting property, guaranteeing stability of friction materials, improving heat fading resistance of the friction materials, providing good and stable brake force output, and being long in service life and comfortable.
Description
Technical field
The present invention relates to a kind of high thermal conductivity ceramic-based friction material.
Background technology
The world today is along with scientific-technical progress, and more new technology is applied to automobile manufacturing field, also makes automobile towards the high future development that carries of high speed; People have also proposed extra high requirement to comfortableness simultaneously.The raising that braking technology is required is not only also to show guarantee secure context.Friction materials product should also should meet low noise on the basis that meets brake request, and the high life, low dust, does not attack the requirements such as antithesis.
Along with the enhancing of every country environmental protection consciousness, increasing to the dynamics of environment protection, the numerous and confused laws and regulations requirement of releasing separately, proposes restriction to the composition of friction materials.If European REACH regulation is to lead and compound thereof, sexavalence chromium and compound, cadmium and compound thereof, heavy metals such as mercury and mercuric compounds and proposed restriction requirement; In view of the copper in friction materials is the important sources of copper staining in environment, California, USA has proposed to limit the use of requirement by regulation to copper, and in friction materialss in 2021, copper content need to be lower than copper content in 5%, 2025 year friction materials lower than 0.5%.Friction materials is meeting on the basis of performance and comfortableness, also will meet the more and more sternly environmental legislation requirement of power that every country proposes simultaneously.
This just proposes harsher requirement to brake material, under some operating mode, when Disk Brake, transient temperature can reach 200 400 degrees Celsius, frequently braking under high-speed motion pattern, temperature is up to more than 600 degrees Celsius, how can make in the gap of stopping stopping, the heat Quick diffusing gathering to be gone out, and this just needs friction materials to have higher thermal conductivity, meanwhile material also needs good friction and wear behavior, could improve like this work-ing life of brake material.
The powder that copper and alloy material brass thereof and bronze are made or fiber become a kind of additive of friction materials of routine.Be mainly to utilize copper material matter soft, have self-lubricating property, also have good thermal conductivity simultaneously, thermal conductivity is high, is beneficial to fricative heat and leaves rapidly, and be conducive to form friction transfer face, and copper fiber has reinforced effects simultaneously.But it is the same with asbestos, add component as friction materials, although there is excellent performance, also because the requirement of new environmental regulation will step down from the stage of history.
Make a general survey of friction materials and use course, passenger car brake material Materials has experienced semi-metal, low metal, the course of ceramic-based friction material.The features such as semi-metal formula has good thermal conductivity and resistance to high loading, and intensity is high, and cost is low, technology maturation are widely used.But also exist hardness high, easily attack antithesis, easily produce noise, easily corrosion, the problem such as speed sensitivity is poor.Low metal formulations frictional behaviour is high, and brake response is sensitive, has good compressibility, and because metal content is low compared with semi-metal, hardness is lower, is difficult for attacking antithesis.But also exist wearing and tearing large, the defects such as the serious and noise of powder falling.Ceramic-based friction material is high temperature resistant, heat fading good, wear resisting property is excellent, have better noise and vibration performance, is applicable to very much the brake request of high-performance passenger car.But existing ceramic base brake facing performance is stable not, a lot of brake facings are in the time of high temperature, and its frictional behaviour easily fails, easily occurs locking or the phenomenon of dawdling.Because component collocation is unreasonable, there is damascene phenomenon simultaneously.Sometimes even occur that friction materials expands, the serious quality problems such as friction surface crackle; Due to the restriction that copper is used, traditional cupric friction materials can not meet new environmental requirement unexpectedly simultaneously.
Therefore be badly in need of exploitation a kind of without copper, without metal environmental protection, possess cellular structure raw material, under various extreme operating condition conditions, still have stable frictional behaviour, driver comfort is good, brake noise is little, wear resisting property is good, to the friction pair little ceramic-based friction material that weares and teares.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high thermal conductivity ceramic-based friction material.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of high thermal conductivity ceramic-based friction material, it is characterized in that, comprise the material of following parts by weight: cashew nut oil modified alkyd resin 35-50 part, diatomite 15-30 part, carbon fiber 1-8 part, boride 11-30 part, Tetramethylammonium hydroxide 1-5 part, quartz sand 0.5-5.5 part, magnesiumcarbonate 15-20 part, barium carbonate 1-5 part, zirconium silicate 3-11 part, silicon nitride 6-18 part, boron trioxide 3-8 part, talcum 15-20 part, sorb furfuryl alcohol acid anhydride monoleate 10-31 part, nano level silicon oxide 0.5-3.2 part of hydrophobically modified, hornblende 2-9 part, Cadmium Sulphate 1.8-13.5 part, zinc sulphide 1.5-3.9 part, borax 5-11 part, titanium oxide 3-6 part, titanium carbide 1-5 part.
The invention has the beneficial effects as follows:
1, the present invention has excellent heat conductivility, ensure that friction materials is at high temperature, under high loading operating mode, friction materials is stable, improve the heat resistanceheat resistant decline performance of friction materials, under various operating modes, particularly at a high speed, high temperature, good stable damping force output is provided in high loading situation, possesses compared with long life and comfortableness.
2, without copper without metal environment under, metallic sulfide mixture carries out modification to mineral fibre, and fricative heat can radially be conducted according to fiber, reaches good radiating effect.Both is collaborative, still can keep making friction materials keep good frictional behaviour, and the effect of copper in the ceramic mould brake facing that contains copper has effectively been supplied in both existence.
3, friction materials of the present invention, because the synergistic effect of the interpolation of metallic sulfide and concentrated metallic sulfide makes more easily to produce transfer film in friction process, has stablized frictional coefficient, has reduced abrasion loss, has improved the thermotolerance of brake facing simultaneously.
Embodiment
Embodiment 1
A kind of high thermal conductivity ceramic-based friction material, comprises the material of following parts by weight: 40 parts of cashew nut oil modified alkyd resins, 21 parts, diatomite, 4 parts, carbon fiber, 20 parts of borides, 3 parts of Tetramethylammonium hydroxide, 2 parts of quartz sands, magnesiumcarbonate 15-20 part, 2 parts of barium carbonates, 7 parts of zirconium silicates, 14 parts of silicon nitrides, 6 parts of boron trioxides, 18 parts, talcum, 24 parts of sorb furfuryl alcohol acid anhydride monoleates, 2 parts of the nano level silicon oxide of hydrophobically modified, 5 parts of hornblendes, 10 parts of Cadmium Sulphates, 2 parts, zinc sulphide, 4 parts of boraxs, 5 parts of titanium oxide, 2 parts of titanium carbides.
Claims (1)
1. a high thermal conductivity ceramic-based friction material, it is characterized in that, comprise the material of following parts by weight: cashew nut oil modified alkyd resin 35-50 part, diatomite 15-30 part, carbon fiber 1-8 part, boride 11-30 part, Tetramethylammonium hydroxide 1-5 part, quartz sand 0.5-5.5 part, magnesiumcarbonate 15-20 part, barium carbonate 1-5 part, zirconium silicate 3-11 part, silicon nitride 6-18 part, boron trioxide 3-8 part, talcum 15-20 part, sorb furfuryl alcohol acid anhydride monoleate 10-31 part, nano level silicon oxide 0.5-3.2 part of hydrophobically modified, hornblende 2-9 part, Cadmium Sulphate 1.8-13.5 part, zinc sulphide 1.5-3.9 part, borax 5-11 part, titanium oxide 3-6 part, titanium carbide 1-5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365627.7A CN104140784A (en) | 2014-07-30 | 2014-07-30 | Ceramic-based friction material with high heat-conducting property |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410365627.7A CN104140784A (en) | 2014-07-30 | 2014-07-30 | Ceramic-based friction material with high heat-conducting property |
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| CN104140784A true CN104140784A (en) | 2014-11-12 |
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| CN201410365627.7A Pending CN104140784A (en) | 2014-07-30 | 2014-07-30 | Ceramic-based friction material with high heat-conducting property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050992A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Shoe shaft for automobile brake bottom plate |
| US9771994B2 (en) * | 2015-11-06 | 2017-09-26 | Schaeffler Technologies AG & Co. KG | Wet friction materials including cristobalite as filler material |
-
2014
- 2014-07-30 CN CN201410365627.7A patent/CN104140784A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9771994B2 (en) * | 2015-11-06 | 2017-09-26 | Schaeffler Technologies AG & Co. KG | Wet friction materials including cristobalite as filler material |
| CN108350966A (en) * | 2015-11-06 | 2018-07-31 | 舍弗勒技术股份两合公司 | Include wet friction material of the cristobalite as filler material |
| CN108350966B (en) * | 2015-11-06 | 2020-06-16 | 舍弗勒技术股份两合公司 | Wet friction material comprising cristobalite as filler material |
| CN106050992A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Shoe shaft for automobile brake bottom plate |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |
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| WD01 | Invention patent application deemed withdrawn after publication |