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A kind of non-heavy metal friction material and brake pad

A friction material and heavy metal technology, applied in the field of automobile brake pads, can solve the problems of brake discs prone to fatigue cracks, unstable friction coefficient, and reduced service life, and achieve the effects of improving the dual state, low wear rate, and reduced wear Effect

Active Publication Date: 2018-10-16
BEIJING TIANYISHANGJIA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the instability of the friction coefficient in the prior art, the serious wear of the brake disc, the fatigue cracks of the brake disc, the transfer and bonding of the base metal of the brake disc during high temperature braking, Reduce the defects of the service life, thereby providing a stable friction coefficient, reducing the wear of the brake disc, reducing the generation of fatigue cracks of the brake disc, preventing the transfer and bonding of the base metal of the brake pad at high temperature during braking, and improving the brake resistance. No heavy metal friction materials and brake pads for longer service life of the moving disc

Method used

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  • A kind of non-heavy metal friction material and brake pad

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Comparison scheme
Effect test

Embodiment 1

[0023] The heavy metal-free automobile brake pad friction material of the present invention, in parts by weight (1 part by weight is 1g), comprises raw materials:

[0024] 25 parts of steel fiber, 7 parts of mineral fiber, 12 parts of modified phenolic resin, 10 parts of nitrile rubber, 15 parts of styrene-butadiene rubber, 3 parts of graphite, 4 parts of molybdenum disulfide, 8 parts of barium sulfate, 3 parts of aramid, weight 3 parts of high-quality calcium carbonate, 3 parts of heavy magnesium oxide, 2 parts of white corundum, and 3 parts of silicon carbide.

[0025] Mix the components uniformly according to the above ratio to obtain a mixture, place the mixture in a mold and press it, set the pressing pressure to 10Mpa, and the pressing time to 150s, then cure the pressed blank at a temperature of 180°C for 20 hours, Automobile brake pads are prepared. The performance of the automobile brake pads prepared above is shown in Table 1.

Embodiment 2

[0027] The heavy metal-free automobile brake pad friction material of the present invention, in parts by weight (1 part by weight is 1g), comprises raw materials:

[0028] 30 parts of steel fiber, 9 parts of mineral fiber, 10 parts of modified phenolic resin, 10 parts of nitrile rubber, 12 parts of styrene-butadiene rubber, 3 parts of graphite, 3 parts of molybdenum disulfide, 5 parts of barium sulfate, 4 parts of aramid, weight 5 parts of high-quality calcium carbonate, 1 part of heavy magnesium oxide, 2 parts of white corundum, and 4 parts of silicon carbide.

[0029] Mix the components uniformly according to the above ratio to obtain a mixture, place the mixture in a mold and press it, set the pressing pressure to 15Mpa, and the pressing time to 100s, then cure the pressed blank at a temperature of 150°C for 24 hours, Automobile brake pads are prepared. The performance of the automobile brake pads prepared above is shown in Table 1.

Embodiment 3

[0031] The heavy metal-free automobile brake pad friction material of the present invention, in parts by weight (1 part by weight is 1g), comprises raw materials:

[0032] 20 parts of steel fiber, 15 parts of mineral fiber, 10 parts of modified phenolic resin, 15 parts of nitrile rubber, 10 parts of styrene-butadiene rubber, 2 parts of graphite, 4 parts of molybdenum disulfide, 8 parts of barium sulfate, 1 part of aramid, weight 5 parts of high-quality calcium carbonate, 1 part of heavy magnesium oxide, 1 part of white corundum, and 4 parts of silicon carbide.

[0033] Mix the components uniformly according to the above ratio to obtain a mixture, place the mixture in a mold and press it, set the pressing pressure to 12Mpa, and the pressing time to 120s, then cure the pressed blank at a temperature of 160°C for 22 hours, Automobile brake pads are prepared. The performance of the automobile brake pads prepared above is shown in Table 1.

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Abstract

The invention discloses a heavy-metal-free friction material and a brake pad. The heavy-metal-free friction material comprises the following raw materials, by weight: 20-30 parts of steel fiber, 5-15 parts of mineral fiber, 5-15 parts modified phenolic resin, 10-15 parts of nitrile rubber, 10-15 parts of styrene-butadiene rubber parts, 2-3 parts of graphite, 3-4 parts of molybdenum disulfide, 5-8 parts of barium sulfate, 1-5 parts of aramid, 1-5 parts of heavy calcium carbonate, 1-5 parts of heavy magnesium oxide, 1-3 parts of white corundum, and 3-4 parts of silicon carbide. The heavy-metal-free friction material does not contain heavy metal, and has low copper content, such that pollution is reduced. The material has good thermal crack resistance, good wear resistance and low wear rate, such that the service life is further prolonged. The component ratio of the friction material is reasonably controlled, such that abnormal wear on a brake disk caused by the friction material is prevented.

Description

technical field [0001] The invention relates to the field of automobile brake pads, in particular to a heavy metal-free friction material and a brake pad. Background technique [0002] With the continuous increase of the number of automobiles in our country, the pollution problems caused by this have been paid more and more attention by people. [0003] At present, high-performance brake materials at home and abroad mostly use metallic copper. Copper is a key component in the design of brake pads. Frictional stability of pads and discs at various operating temperatures. In the traditional non-asbestos organic material (NAO) and low steel formulations of brake pads used in Europe, Asia and North America, copper even accounts for 5% to 20% of the total mass of brake pads. After the brake material is processed into brake pads, when the vehicle brakes, some copper-containing dust will be generated at the contact position between the brake pads and the brake disc due to the fri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L61/14C08L9/02C08L77/10C08K13/04C08K7/06C08K7/04C08K3/04C08K3/30C09K3/14F16D69/02
CPCC08L9/02C08L9/06C08L61/14C08L2201/08C08L2205/02C08L2205/035C08L2205/16C09K3/149F16D69/02C08L77/10C08K13/04C08K7/06C08K7/04C08K3/04C08K2003/3045
Inventor 吴佩芳李想
Owner BEIJING TIANYISHANGJIA NEW MATERIAL
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