CN101418090A - Low temperature type high friction rubber and whisker composite brake shoe - Google Patents
Low temperature type high friction rubber and whisker composite brake shoe Download PDFInfo
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- CN101418090A CN101418090A CNA2008101216629A CN200810121662A CN101418090A CN 101418090 A CN101418090 A CN 101418090A CN A2008101216629 A CNA2008101216629 A CN A2008101216629A CN 200810121662 A CN200810121662 A CN 200810121662A CN 101418090 A CN101418090 A CN 101418090A
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- brake shoe
- composite brake
- rubber
- whisker
- low temperature
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Abstract
This disclosure of the Invention a kind of low temperature type high friction rubber and whisker composite brake shoe, it to existing with cis-1,4-polybutadiene rubber, resin, reduced iron powder, barium sulfate, SULPHUR POWDER, zinc oxide, bauxitic clay, graphite etc. are main raw material, the material prescription that is equipped with the composite brake shoe of anti-aging agent and promotor making improves, the new prescription that is provided has been rejected its asbestos component, mineral crystal whisker and metal wool and organic frictional property regulator have been added as stopping composition, and with tackifier as binding agent and softening agent, add cashew nut oil modified resin, lubricant and heat absorbent, thereby the intensity and the toughness of friction piece have been improved, wheel watt tread temperature rise when reducing drag friction, and its watt back of the body in sulfidation is combined as a whole securely with the friction physical efficiency.
Description
Technical field:
The present invention relates to a kind of drift stop that guarantees rolling stock's safe operation, belong to the vehicle brake technology field.
Background technology:
At present, China reaches the cast iron brake shoe that is that rolling stock adopted in the world, though this cast iron brake shoe is made simply, cost is low, but its frictional coefficient is lower, the braking power that can bear also lower, and ubiquity the defective that when braking produces spark, therefore, can not adapt to railway speed increase and heavily loaded high speed needs.For addressing this problem, China reaches and has developed rolling stock's high friction composite brake shoe in the world.The main component of this composite brake shoe is made up of rubber, reduced iron powder, barium sulfate, SULPHUR POWDER, zinc oxide, bauxitic clay, asbestos, anti-aging agent, promotor etc.Though this composite brake shoe has overcome the shortcoming of cast iron brake shoe, but still exist some deficiency, wherein Zui Da problem is exactly the composition that contains asbestos in composite brake shoe.Asbestos are not only a kind of carcinogenic substance, and can cause topsoil by generation asbestos dust in the operation braking; In addition, the composite brake shoe that contains asbestos component also exists the problem of heat conductivility difference, can cause brake shoe " locking " in the braking and causes wheel tread flat, peels off, and influences its traffic safety and work-ing life.
Summary of the invention:
The present invention is intended to solve the problem of above-mentioned existence, provides that a kind of temperature rise is low, frictional coefficient is high, can not produce spark in durable wear and the braking procedure, also can not produce the high friction composite brake shoe of environmental pollution.
The concrete summary of the invention of a kind of great friction coefficient rubber and whisker composite brake shoe of the present invention is: to existing be main raw material with cis-1,4-polybutadiene rubber, resin, reduced iron powder, barium sulfate, SULPHUR POWDER, zinc oxide, bauxitic clay, graphite etc., the material prescription that is equipped with the composite brake shoe that anti-aging agent and promotor makes improves.The new prescription that is provided has been rejected its asbestos component, mineral crystal whisker and metal wool and organic frictional property regulator have been added as stopping composition, and with tackifier as binding agent and softening agent, add cashew nut oil modified resin, lubricant and heat absorbent, thereby the intensity and the toughness of friction piece have been improved, wheel watt tread temperature rise when reducing drag friction, and its watt back of the body in sulfidation is combined as a whole securely with the friction physical efficiency.
The material prescription of great friction coefficient rubber and whisker composite brake shoe of the present invention is:
Styrene-butadiene rubber(SBR): 8%-11% cis-1,4-polybutadiene rubber: 8%-11%
Reduced iron powder: 5%-8% barium sulfate: 1%-5%
SULPHUR POWDER: 1%-3% zinc oxide: 4%-8%
Bauxitic clay: 3%-7% graphite: 12%-20%
Mineral crystal whisker: 5%-12% white fused alumina: 10%-15%
Anti-aging agent: 0.6%-1% promotor: 2%-3%
Cashew nut oil modified resin: 5%-8% powder: the 4%-8% that rubs
Lubricant: 0.5%-1.5% heat absorbent: 1%-5%
Metal wool: 5%-10%
The name of anti-aging agent of the present invention is called RD, is the commercially available prod; The name of promotor is called CZ, is the commercially available prod; The friction powder adopts organic friction powder, is the commercially available prod; Lubricant adopts molybdenumdisulphide; Heat absorbent adopts ammonium nitrides; Mineral crystal whisker is a calcium sulfate crystal whiskers.
Adopt the fill a prescription great friction coefficient rubber and whisker composite brake shoe of manufacturing of the present invention to compare with existing composite brake shoe, not only has stable friction performance, The friction coefficient speed, pressure, range of temperature is little, temperature rise is low, wear resisting property is good, the advantage of long service life, and, thoroughly solved the problem that the asbestos dust that produces in the existing composite brake shoe braking procedure causes topsoil owing to adopt mineral crystal whisker, metal wool to substitute asbestos.
Embodiment
Embodiment 1:
One of high friction rubber and whisker composite brake shoe material prescription:
Cis-1,4-polybutadiene rubber: styrene-butadiene rubber(SBR) 9%: reduced iron powder 9%: barium sulfate 7%: SULPHUR POWDER 3%: zinc oxide 2%: bauxitic clay 5%: graphite 4%: mineral crystal whisker 15%: metal wool 10%: white fused alumina 8%: anti-aging agent 13%: promotor 1%: cashew nut oil modified resin 3%: friction powder 5%: lubricant 4%: heat absorbent 1%: 2%.
Embodiment 2:
Two of high friction rubber and whisker composite brake shoe material prescription:
Cis-1,4-polybutadiene rubber: styrene-butadiene rubber(SBR) 10%: reduced iron powder 10%: barium sulfate 8%: SULPHUR POWDER 3%: zinc oxide 2%: bauxitic clay 5%: graphite 5%: mineral crystal whisker 13%: metal wool 10%: white fused alumina 7%: anti-aging agent 13%: promotor 1%: cashew nut oil modified resin 2.5%: friction powder 5%: lubricant 4%: heat absorbent 0.5%: 1%.
Adopt the fill a prescription high friction rubber and whisker composite brake shoe of manufacturing of the present invention, through Ministry of Railways's product quality supervision and inspection center check, every performance index all be better than national Ministry of Railways ministerial standard, particularly its wear loss and the temperature rise index particularly outstanding.Through repeatedly test, the wear loss average out to 0.08cm of high friction rubber and whisker composite brake shoe
3/ MJ is more than the existing 1.5cm with [2002] No. 11 files of standard of national Ministry of Railways formulation
3/ MJ will be low many; The tread temperature rise is low, 141 ℃ of peak temperature rises, and the technical qualification allowable temperature is 400 ℃.Thereby not only guaranteed low temperature rise, great friction coefficient and the wear resisting property of a specified duration of rolling stock's composite brake shoe effectively, improved its work-ing life, and satisfied the requirement of China railways speed-raising and heavy duty.
Claims (2)
1, a kind of low temperature type high friction rubber and whisker composite brake shoe is characterized in that the prescription of this low temperature type high friction rubber and whisker composite brake shoe is:
Styrene-butadiene rubber(SBR): 8%-11%
Cis-1,4-polybutadiene rubber: 8%-11%
Reduced iron powder: 5%-8%
Barium sulfate: 1%-5%
SULPHUR POWDER: 1%-3%
Zinc oxide: 4%-8%
Bauxitic clay: 3%-7%
Graphite: 12%-20%
Mineral crystal whisker: 5%-12%
White fused alumina: 10%-15%
Anti-aging agent: 0.6%-1%
Promotor: 2%-3%
Cashew nut oil modified resin: 5%-8%
Friction powder: 4%-8%
Lubricant: 0.5%-1.5%
Heat absorbent: 1%-5%
Metal wool: 5%-10%.
2, a kind of low temperature type high friction rubber and whisker composite brake shoe according to claim 1 is characterized in that described mineral crystal whisker is a calcium sulfate crystal whiskers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101216629A CN101418090A (en) | 2008-10-16 | 2008-10-16 | Low temperature type high friction rubber and whisker composite brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101216629A CN101418090A (en) | 2008-10-16 | 2008-10-16 | Low temperature type high friction rubber and whisker composite brake shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101418090A true CN101418090A (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101216629A Pending CN101418090A (en) | 2008-10-16 | 2008-10-16 | Low temperature type high friction rubber and whisker composite brake shoe |
Country Status (1)
| Country | Link |
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| CN (1) | CN101418090A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883655A (en) * | 2012-12-20 | 2014-06-25 | 吴有站 | Low-temperature flexible high-friction composite brake shoe |
| CN104672556A (en) * | 2013-11-28 | 2015-06-03 | 招远市东晟橡胶制品有限公司 | Low-temperature high-friction rubber crystal |
| CN105909709A (en) * | 2016-05-23 | 2016-08-31 | 桐城市中汇塑业有限公司 | High-strength, wear-resistance and tear-resistance rubber brake pad |
| CN109608710A (en) * | 2018-12-28 | 2019-04-12 | 河北轨范教育科技有限公司 | A kind of production method of friction facing and brake block |
| CN109651662A (en) * | 2018-12-28 | 2019-04-19 | 河北轨范教育科技有限公司 | A kind of friction facing and its brake block of preparation |
-
2008
- 2008-10-16 CN CNA2008101216629A patent/CN101418090A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883655A (en) * | 2012-12-20 | 2014-06-25 | 吴有站 | Low-temperature flexible high-friction composite brake shoe |
| CN104672556A (en) * | 2013-11-28 | 2015-06-03 | 招远市东晟橡胶制品有限公司 | Low-temperature high-friction rubber crystal |
| CN105909709A (en) * | 2016-05-23 | 2016-08-31 | 桐城市中汇塑业有限公司 | High-strength, wear-resistance and tear-resistance rubber brake pad |
| CN109608710A (en) * | 2018-12-28 | 2019-04-12 | 河北轨范教育科技有限公司 | A kind of production method of friction facing and brake block |
| CN109651662A (en) * | 2018-12-28 | 2019-04-19 | 河北轨范教育科技有限公司 | A kind of friction facing and its brake block of preparation |
| CN109608710B (en) * | 2018-12-28 | 2021-03-23 | 河北轨范教育科技有限公司 | Manufacturing method of friction lining and brake pad |
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Open date: 20090429 |