CN105131905A - Ceramic based friction materials with high stability - Google Patents
Ceramic based friction materials with high stability Download PDFInfo
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- CN105131905A CN105131905A CN201510541382.3A CN201510541382A CN105131905A CN 105131905 A CN105131905 A CN 105131905A CN 201510541382 A CN201510541382 A CN 201510541382A CN 105131905 A CN105131905 A CN 105131905A
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Abstract
The invention discloses ceramic based friction materials with the high stability. The ceramic based friction materials with the high stability are characterized by being prepared from, by weight, 25-41 parts of cashew nut shell oil modified phenolic resin, 3-15 parts of medical stone, 2-11 parts of boride, 6-17 parts of rock wool, 1.5-3.6 parts of magnesium oxide, 3-21 parts of fiber brucite, 5-21 parts of vermiculite, 25-62 parts of calcite, 8-41 parts of potassium feldspar, 8-15 parts of carbon fiber, 5-11 parts of calcium oxide, 25-46 parts of Datong soil, 3-12 parts of water glass binders, 2-8 parts of silicon nitride and 1-5 parts of titanium carbide. According to the ceramic based friction materials with the high stability, an excellent thermal conductivity property is achieved, the stability of the friction materials is guaranteed, the heat fading resistance of the friction materials is improved, good and stable braking force output is provided, and the long service life and the comfort are achieved.
Description
Technical field
The present invention relates to a kind of high stability ceramic-based friction material.
Background technology
The world today is along with scientific-technical progress, and more New technical use, in automobile manufacturing field, also makes automobile carry future development towards high at a high speed; People also propose extra high requirement to comfortableness simultaneously.To the raising that braking technology requires, be also not only show guarantee secure context.Friction materials product also should should meet low noise, the high life on the basis meeting brake request, and 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 laws and regulations requirement that numerous and confused release is respective, proposes restriction to the composition of friction materials.If European REACH legislation is to plumbous and compound, sexavalence chromium and compound, cadmium and compound thereof, heavy metals such as mercury and mercuric compounds and propose restriction requirement; In view of the important sources that the copper in friction materials is copper staining in environment, California, USA to be proposed copper by regulation and limits the use of requirement, and in friction materialss in 2021, copper content needs lower than 5%, and in friction materialss in 2025, copper content is lower than 0.5%.Friction materials, on the basis meeting performance and comfortableness, also will meet the environmental legislation requirement of the more and more tighter power that every country proposes simultaneously.
This just proposes harsher requirement to brake material, under some operating mode, during Disk Brake, transient temperature can reach 200 400 degrees Celsius, frequently brake under high-speed motion pattern, temperatures as high more than 600 degrees Celsius, how can make in gap of stopping stopping, the heat Quick diffusing gathered to be gone out, this just needs friction materials to have higher thermal conductivity, meanwhile material also needs good friction and wear behavior, could improve the work-ing life of brake material like this.
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.Mainly utilize copper material matter soft, have self-lubricating property, also have good thermal conductivity, thermal conductivity is high simultaneously, is beneficial to fricative heat and leaves rapidly, and is conducive to forming friction transfer face, and copper fiber has reinforced effects simultaneously.But it is the same with asbestos, as friction materials addO-on therapy, 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 experienced by semi-metal, low metal, the course of ceramic-based friction material.Semi-metal formula has good thermal conductivity and resistance to high loading, and the features such as intensity is high, and cost is low, technology maturation are widely used.But it is high also to there is hardness, easily attacks antithesis, easily produces noise, easy corrosion, the problems such as speed sensitivity difference.Low metal formulations frictional behaviour is high, and brake response is sensitive, has good compressibility, and because of metal content, comparatively semi-metal is low, and hardness is lower, not easily attacks antithesis.But it is large also to there are wearing and tearing, 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 facing is when high temperature, and its frictional behaviour easily fails, easily occur locking or phenomenon of dawdling.Simultaneously because component collocation is unreasonable, there is damascene phenomenon.Sometimes even there are the serious quality problems such as friction materials expands, friction surface crackle; Restriction simultaneously owing to using copper, traditional cupric friction materials can not meet new environmental requirement unexpectedly.
Therefore exploitation is badly in need of a kind of without copper, without metal environmental protection, possess cellular structure raw material, under various extreme operating condition condition, still there is stable frictional behaviour, driver comfort is good, brake noise is little, wear resisting property is good, wear and tear to friction pair little ceramic-based friction material.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high stability 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 stability ceramic-based friction material, is characterized in that, comprise the material of following parts by weight: cashew nut oil modified alkyd resin 25-41 part, medical stone 3-15 part, boride 2-11 part, rock wool 6-17 part, magnesium oxide 1.5-3.6 part, nemalite 3-21 part, frog stone 5-21 part, calcite 25-62 part, potassium felspar sand 8-41 part, carbon fiber 8-15 part, calcium oxide 5-11 part, Datong District soil 25-46 part, sodium silicate binder 3-12 part, silicon nitride 2-8 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 mode, particularly at a high speed, high temperature, there is provided well stable damping force to export in high loading situation, possess comparatively long life and comfortableness.
2, without copper without under metal environment, metallic sulfide mixture carries out modification to mineral fibre, make fricative heat can according to fiber radial direction conduction, reach good radiating effect.Both is collaborative, still can keep the frictional behaviour making friction materials keep good, and the effect containing copper in the ceramic mould brake facing of 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, stabilizes frictional coefficient, reduce abrasion loss, improve the thermotolerance of brake facing simultaneously.
Embodiment
Embodiment 1
A kind of high stability ceramic-based friction material, comprises the material of following parts by weight: cashew nut oil modified alkyd resin 25 parts, medical stone 15 parts, boride 11 parts, rock wool 6-17 part, 3.6 parts, magnesium oxide, nemalite 21 parts, 5 parts, frog stone, 62 parts, calcite, potassium felspar sand 8 parts, 8 parts, carbon fiber, 5 parts, calcium oxide, 26 parts, Datong District's soil, sodium silicate binder 12 parts, silicon nitride 2 parts, titanium carbide 5 parts.
Claims (1)
1. a high stability ceramic-based friction material, is characterized in that, comprises the material of following parts by weight: cashew nut oil modified alkyd resin 25-41 part, medical stone 3-15 part, boride 2-11 part, rock wool 6-17 part, magnesium oxide 1.5-3.6 part, nemalite 3-21 part, frog stone 5-21 part, calcite 25-62 part, potassium felspar sand 8-41 part, carbon fiber 8-15 part, calcium oxide 5-11 part, Datong District soil 25-46 part, sodium silicate binder 3-12 part, silicon nitride 2-8 part, titanium carbide 1-5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541382.3A CN105131905A (en) | 2015-08-31 | 2015-08-31 | Ceramic based friction materials with high stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510541382.3A CN105131905A (en) | 2015-08-31 | 2015-08-31 | Ceramic based friction materials with high stability |
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| Publication Number | Publication Date |
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| CN105131905A true CN105131905A (en) | 2015-12-09 |
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| CN201510541382.3A Pending CN105131905A (en) | 2015-08-31 | 2015-08-31 | Ceramic based friction materials with high stability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050183A (en) * | 2017-12-12 | 2018-05-18 | 北京启顺京腾科技有限责任公司 | A kind of friction material and its locomotive brake shoe of preparation |
-
2015
- 2015-08-31 CN CN201510541382.3A patent/CN105131905A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050183A (en) * | 2017-12-12 | 2018-05-18 | 北京启顺京腾科技有限责任公司 | A kind of friction material and its locomotive brake shoe of preparation |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |
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| WD01 | Invention patent application deemed withdrawn after publication |