Nonmetallic ceramic automobile brake pad and preparation method thereof
A brake pad and ceramic-based technology, applied in the field of automobile brake pads, can solve the problems of high temperature wear performance that is prone to cracks, shortened service life of brake pads, aggravated high temperature wear of materials, etc., and achieves a simple and feasible preparation method, improved high temperature resistance, Good manufacturing performance
Inactive Publication Date: 2011-06-01
CENT SOUTH UNIV +1
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Problems solved by technology
At present, the mainstream automobile brake pads on the market are all made of semi-metal or metal-less resin-based friction materials. When the car is in continuous or emergency braking, the temperature on the surface of the brake pads and brake discs is as high as 500-700 ° C. Due to the resin-based brake pads Poor temperature resistance, it will decompose and release water, gas, oil, etc. at high temperature, and form a thin film on the friction surface, making dry friction into mixed friction or wet friction, the friction coefficient is significantly reduced, and there is a hidden danger of brake failure. Due to the large amount of thermal decomposition of the resin, its bonding effect is reduced, and the high temperature wear of the material is aggravated, resulting in a significant reduction in the service life of the brake pads
At present, some ceramic automobile brake pads on the market use a large amount of ceramic fibers instead of traditional steel fibers. Although their braking comfort performance (including noise, ash falling, and matching with the pair, etc.) has been significantly improved, resin is still used as the main material. Adhesives, which lead to problems such as easy cracking and poor high-temperature wear performance at high temperatures
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[0020] The present invention will be further described below in combination with specific embodiments.
[0021] The formula of the non-metal ceramic base brake pad provided by the invention:
[0022] Ceramic binder 10~20(wt.%), resin / rubber 5~10(wt.%),
[0023] Ceramic / mineral fiber 15~25(wt.%), aramid pulp 1~2(wt.%),
[0024] Potassium titanate whiskers 4~10(wt.%), graphite 6~16(wt.%),
[0025] Antimony sulfide 3~8(wt.%), chromite 1~2(wt.%),
[0026] Pyrite 1~2(wt.%), organic friction powder 2~5(wt.%),
[0027] Barite 10~20(wt.%), composite filler 4~8(wt.%).
[0028] In this formula system, the ceramic binder is mainly modified sodium aluminosilicate as a high-temperature binder, which can significantly improve the temperature resistance of the material, reduce the wear of the material at high temperature, and make the material form a network Shaped porous structure increases braking stability and reduces braking noise. In order to continue to use the molding process an...
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The invention discloses a nonmetallic ceramic automobile brake pad, and a material formula of the nonmetallic ceramic automobile brake pad is calculated by weight percentage: 10-20 wt.% of ceramic adhesive agent, 5-10 wt.% of resin / rubber, 15-25 wt.% of ceramic / mineral fiber, 1-2 wt.% of aramid pulp, 4-10 wt.% of potassium titanate whisker, 6-16 wt.% of graphite, 3-8 wt.% of antimony sulfide, 1-2 wt.% of chromite, 1-2 wt.% of pyrite, 2-5 wt.% of organic friction power, 10-20 wt.% of barite and 4-8 wt.% of compound filler. The nonmetallic ceramic automobile brake pad has long service life and good manufacture performance; and a preparation method of the nonmetallic ceramic automobile brake pad is simple and feasible.
Description
technical field [0001] The invention relates to an automobile brake pad, in particular to a non-metallic ceramic-based composite brake pad used in an automobile brake system, and also relates to a preparation method of the automobile brake pad. Background technique [0002] Automobile brake pads are the key components of Class A of the automobile braking system, and their performance is directly related to the safety and reliability of automobile operation. At present, the mainstream automobile brake pads on the market are all made of semi-metal or metal-less resin-based friction materials. When the car is in continuous or emergency braking, the temperature on the surface of the brake pads and brake discs is as high as 500-700 ° C. Due to the resin-based brake pads Poor temperature resistance, it will decompose and release water, gas, oil, etc. at high temperature, and form a thin film on the friction surface, making dry friction into mixed friction or wet friction, the fric...
Claims
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IPC IPC(8): F16D69/02C04B28/26C04B14/38
Inventor 刘伯威黄伯云熊翔鲍小恒贺云果刘美玲宋晓萍杨阳
Owner CENT SOUTH UNIV