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A cement-containing non-asbestos brake pad and preparation method thereof

A technology without asbestos and brake pads, applied in the field of brake pads, can solve the problems of the disintegration of the friction material matrix, the increased wear, and the decrease of the friction coefficient of the brake pads, so as to achieve the effects of low cost, increased friction torque and reduced density

Active Publication Date: 2015-12-09
NINGGUO FEIYING AUTO SPARE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Asbestos brake pads are one of the more commonly used brake pads. Due to their low cost and light weight, many vehicle manufacturers still use asbestos-containing brake pads when producing trucks, engineering vehicles and other vehicles, because the brake pads are working. During the process, friction will generate dust, release harmful substances and pollute the environment. Many countries in the world have banned the use of asbestos products. More and more non-asbestos formulas have been developed, and because the current friction materials are generally organic matter- Phenolic resin, the resin is easy to decompose at high temperature, causing the matrix of the friction material to disintegrate, thereby reducing the friction coefficient of the brake pad and intensifying the wear. How to prepare a non-asbestos brake pad with high impact strength and good wear resistance at high temperature has become a current demand. Technical issues resolved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A cement-containing non-asbestos brake pad, its raw materials include: 15% modified phenolic resin, 32% fiber materials, 44% filler materials, 9% cement, wherein the cement consists of Portland cement, ordinary silicon Salt cement and slag portland cement, fiber materials are composed of mineral fiber, glass fiber and paper fiber;

[0019] In the present embodiment, the preparation method of the above-mentioned cement-containing non-asbestos brake pad comprises the following steps:

[0020] S1. Weigh modified phenolic resin, fiber materials, filling materials and cement by weight percentage;

[0021] S2. Mix the modified phenolic resin and the filler material in S1 evenly, then add the fiber material and cement described in S1 and mix evenly in a plow mixer;

[0022] S3. Put the mixture obtained in S2 into a hydraulic press and press at a temperature of 148° C. to obtain a cement-containing non-asbestos brake pad.

Embodiment 2

[0024] A cement-containing non-asbestos brake pad. The raw materials include: 15.8% modified phenolic resin, 31.3% fiber materials, 46.2% filler materials, and 6.7% cement, wherein the cement consists of pozzolanic Portland cement, Composed of fly ash Portland cement, composite Portland cement and medium heat Portland cement, the fiber material is mineral fiber;

[0025] In the present embodiment, the preparation method of the above-mentioned cement-containing non-asbestos brake pad comprises the following steps:

[0026] S1. Weigh modified phenolic resin, fiber materials, filling materials and cement by weight percentage;

[0027] S2. Mix the modified phenolic resin and the filler material in S1 evenly, then add the fiber material and cement described in S1 and mix evenly in a plow mixer;

[0028] S3. Put the mixture obtained in S2 into a hydraulic press and press at a temperature of 148° C. to obtain a cement-containing non-asbestos brake pad.

Embodiment 3

[0030] A cement-containing non-asbestos brake pad, its raw materials include: 17% modified phenolic resin, 29.3% fiber materials, 48.3% filler materials, 5.4% cement, wherein the cement is composed of low-heat slag Portland cement, Composed of white Portland cement and slag Portland cement, fiber materials are composed of mineral fibers, glass fibers and paper fibers;

[0031] In the present embodiment, the preparation method of the above-mentioned cement-containing non-asbestos brake pad comprises the following steps:

[0032] S1. Weigh modified phenolic resin, fiber materials, filling materials and cement by weight percentage;

[0033] S2. Mix the modified phenolic resin and the filler material in S1 evenly, then add the fiber material and cement described in S1 and mix evenly in a plow mixer;

[0034] S3. Put the mixture obtained in S2 into a hydraulic press and press at a temperature of 148° C. to obtain a cement-containing non-asbestos brake pad.

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Abstract

A disclosed cement-containing asbestos-free brake disc comprises the raw materials in percent by weight: 14-18% of modified phenolic resin, 28-33% of a fiber material, 40-50% of a filling material and 3-9% of cement, wherein the fiber material is composed of one or more of mineral fiber, glass fiber and paper fiber, cement is composed of one or more of portland cement, ordinary portland cement, slag portland cement, portland-pozzolana cement, portland fly-ash cement, composite portland cement, medium-heat portland cement, low-heat portland slag cement and white portland cement. The invention also discloses a preparation method of the cement-containing asbestos-free brake disc. The cement-containing asbestos-free brake disc is high in impact strength and good in high-temperature wear resistance; and the preparation method of the cement-containing asbestos-free brake disc is simple and relatively low in cost.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a cement-containing non-asbestos brake pad and a preparation method thereof. Background technique [0002] Brake pads are also called brake pads or brake pads. In the braking system of a car, brake pads are the most critical safety parts and play a decisive role in the braking effect. Brake pads are generally made of steel plates, adhesive insulation layers and friction block composition. The friction block is composed of friction material and adhesive. When braking, the friction block is squeezed on the brake disc or brake drum to generate friction with it, so as to achieve the purpose of decelerating and braking the vehicle. It can be seen that the friction block determines the braking performance of the brake pad at high speed and high temperature. The friction material is an important part of the brake pad in the manufacturing process and use process. [0003] The workin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B24/28
Inventor 孙奇春张逢
Owner NINGGUO FEIYING AUTO SPARE PARTS
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