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A preparation process of composite wear-resistant material for brake pads

A wear-resistant material and preparation technology, which is applied in the direction of friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of reduced braking performance of brake pads, inability to brake effectively, and loss of braking ability, etc., to achieve improved durability Heat, promote orderly arrangement, increase the effect of service life

Active Publication Date: 2021-10-15
HENGSHUI ZHONGCHENG FRICTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The common friction material is mostly phenolic resin. The braking temperature in daily use is mainly concentrated at 100°C-200°C, and the emergency braking temperature at high speed is 350°C. If it is a continuous downhill road condition, the braking temperature will rise rapidly under high load conditions. When the temperature exceeds 400°C, the braking performance of traditional brake pads will be greatly reduced when the temperature exceeds 400°C, or even lose the braking ability, and after a long period of use, the friction pads will crack. Part of the brake pads fall off, resulting in failure to brake effectively, resulting in property damage and personal injury

Method used

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Embodiment 1

[0047] A preparation process of a composite wear-resistant material for brake pads, the composite wear-resistant material is made of the following raw materials in parts by weight: 15 parts of modified phenolic resin, 10 parts of carbon fiber, 10 parts of sepiolite fiber, 10 parts of coke powder, mica 10 parts of powder, 10 parts of tire powder, 1.5 parts of stearic acid, 0.5 parts of vinyltriethoxysilane, 0.5 parts of aluminum hydroxide;

[0048] The steps of the preparation process of the composite wear-resistant material are as follows:

[0049] Step S1: Weighing the above raw materials by weight, putting the weighed raw materials into an oven, and drying them at a temperature of 80°C until the raw materials are completely dry;

[0050] Step S2: Grinding the dried modified phenolic resin, carbon fiber, sepiolite fiber, crushing the pulverized phenolic resin, carbon fiber, sepiolite fiber, coke powder, mica powder, tire powder, stearic acid, aluminum hydroxide Add it into t...

Embodiment 2

[0058] A preparation process of a composite wear-resistant material for brake pads, the composite wear-resistant material is made of the following raw materials in parts by weight: 25 parts of modified phenolic resin, 25 parts of carbon fiber, 25 parts of sepiolite fiber, 20 parts of coke powder, mica 20 parts of powder, 20 parts of tire powder, 3 parts of stearic acid, 2 parts of vinyltriethoxysilane, 2 parts of aluminum hydroxide;

[0059] The steps of the preparation process of the composite wear-resistant material are as follows:

[0060] Step S1: Weigh the above raw materials in parts by weight, put the weighed raw materials into an oven, and dry them at a temperature of 90°C until the raw materials are completely dry;

[0061] Step S2: Grinding the dried modified phenolic resin, carbon fiber, sepiolite fiber, crushing the pulverized phenolic resin, carbon fiber, sepiolite fiber, coke powder, mica powder, tire powder, stearic acid, aluminum hydroxide Add it into the mixe...

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Abstract

The invention discloses a preparation process of a composite wear-resistant material for brake pads. The composite wear-resistant material is made of the following raw materials in parts by weight: 15-25 parts of modified phenolic resin, 10-25 parts of carbon fiber, and 10 parts of sepiolite fiber ‑25 parts, coke powder 10‑20 parts, mica powder 10‑20 parts, tire powder 10‑20 parts, stearic acid 1.5‑3 parts, silane coupling agent 0.5‑2 parts, flame retardant 0.5‑2 parts; The modified phenolic resin contains B-O bonds in the molecule, and the B-O bonds have high bond energy and great flexibility, which effectively improves its own heat resistance. At the same time, the linear carbon chain and carbon-carbon double bond are flexible groups, changing the resin The distance between molecules and the movement direction and plasticity between molecules effectively promote the orderly arrangement of resin molecules during curing, thereby improving the heat resistance and toughness of phenolic resin. The improvement of toughness makes the composite wear-resistant material wear-resistant Better performance and higher impact resistance, which in turn increases the service life of the brake pads.

Description

technical field [0001] The invention belongs to the field of brake pad preparation, and in particular relates to a preparation process of a composite wear-resistant material for brake pads. Background technique [0002] Automobile brake pads, also known as automobile brake pads, refer to the friction material fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and friction pad in it are subjected to external pressure and produce friction to achieve the deceleration of the vehicle. Purpose, the heat insulation layer is composed of non-heat-conducting materials, the purpose is heat insulation, the friction block is composed of friction materials and adhesives, and is squeezed on the brake disc or brake drum to generate friction during braking, so as to achieve vehicle deceleration And the purpose of braking, due to friction, the friction block will be gradually worn out. Generally speaking, the lower the cost of the brake pad, the faster the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02B29C43/02B29C43/32B29C43/34B29C43/36C08L61/14C08L21/00C08K13/04C08K7/06C08K3/22C08K5/09C08K3/34C08K7/10
CPCB29C43/02B29C43/32B29C43/34B29C43/36C08K2003/2227C08L61/14F16D69/023F16D2200/006F16D2200/0086C08L21/00C08K13/04C08K7/06C08K3/22C08K5/09C08K3/34C08K7/10
Inventor 罗水英
Owner HENGSHUI ZHONGCHENG FRICTION MATERIAL
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