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Composite material brake block and machining method thereof

A technology of composite materials and processing methods, applied in chemical instruments and methods, friction linings, other chemical processes, etc., can solve problems such as brake drum or brake disc damage, needle-like fibers easy to enter, poor thermal conductivity, etc. , to achieve the effects of reducing thermal recession, stable friction coefficient and low wear rate

Inactive Publication Date: 2018-10-19
ANHUI XIANGCHI VEHICLE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Every time you brake, the brake pads will emit millions of asbestos fibers into the air, and the needle-like fibers can easily enter the lungs and stay there, causing irritation, which can eventually lead to the occurrence of lung cancer; in addition, asbestos-type There is another important problem with brake pads: because asbestos is adiabatic, its thermal conductivity is particularly poor. After repeated use, the brake will cause heat to accumulate in the brake pads. After the brake pads become hot, their braking performance will decrease. Changes, to produce the same friction and braking force will require more times to step on the brakes, if the brake pads reach a certain temperature, it will cause brake failure
However, the formula design of some semi-metallic brake pads often has a certain degree of blindness, which causes some inherent shortcomings of semi-metallic brake pads to be magnified, such as serious corrosion under the action of moisture, and greater damage to brake drums or brake discs. Big and so on

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]A kind of composite brake pad of the present embodiment comprises the following raw materials in parts by weight: 2 parts of viscose fiber, 2.2 parts of Xumian No. 18 fiber, 3 parts of nitrile rubber powder, 1 part of cashew nut shell oil friction powder, boron phenolic 14 parts of resin, 4 parts of red copper, 2 parts of Baizi stone powder, 2 parts of muscovite powder, 15 parts of steel wool fiber, 2 parts of iron oxide green, 4 parts of sepiolite fiber, 2.5 parts of petroleum coke, 2 parts of graphite, copper sulfide 2 parts, 2 parts of vermiculite powder, 1 part of superfine iron oxide powder, 1 part of chromite, 2.5 parts of tire powder. Wherein, the graphite is specifically chemically treated graphite, and the treatment process is as follows: add the above-mentioned graphite in parts by weight to 96% concentrated sulfuric acid, stir and react under vacuum conditions, then slowly add hydrogen peroxide dropwise, and control the reaction temperature to be 30 ℃, reacted...

Embodiment 2

[0051] A kind of composite brake pad of the present embodiment comprises the following raw materials in parts by weight: 8 parts of viscose fiber, 2.8 parts of Xumian No. 18 fiber, 4 parts of nitrile rubber powder, 2 parts of cashew nut shell oil friction powder, boron phenolic 16 parts of resin, 8 parts of red copper, 3 parts of Baizi stone powder, 3 parts of muscovite powder, 18 parts of steel wool fiber, 3 parts of iron oxide green, 5 parts of sepiolite fiber, 3.5 parts of petroleum coke, 4 parts of graphite, copper sulfide 4 parts, 4 parts of vermiculite powder, 2 parts of superfine iron oxide powder, 2 parts of chromite, 3.5 parts of tire powder. Wherein, the graphite is specifically chemically treated graphite, and the treatment process is as follows: adding the above-mentioned graphite in parts by weight to 98% concentrated sulfuric acid, stirring and reacting under vacuum conditions, then slowly adding hydrogen peroxide dropwise, and controlling the reaction temperature...

Embodiment 3

[0053] A kind of composite brake pad of the present embodiment comprises the following raw materials in parts by weight: 5 parts of viscose fiber, 2.5 parts of Xumian No. 18 fiber, 3.5 parts of nitrile rubber powder, 1.5 parts of cashew nut shell oil friction powder, boron phenolic 15 parts of resin, 6 parts of red copper, 2.5 parts of Baizi stone powder, 2.5 parts of muscovite powder, 16.5 parts of steel wool fiber, 2.5 parts of iron oxide green, 4.5 parts of sepiolite fiber, 3 parts of petroleum coke, 3 parts of graphite, copper sulfide 3 parts, 3 parts of vermiculite powder, 1.5 parts of superfine iron oxide powder, 1.5 parts of chromite, 3 parts of tire powder. Wherein, the graphite is specifically chemically treated graphite, and the treatment process is as follows: add the above-mentioned graphite in parts by weight to 98% concentrated sulfuric acid, stir and react under vacuum conditions, then slowly add hydrogen peroxide dropwise, and control the reaction temperature to...

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PUM

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Abstract

The invention relates to the field of car machines, and provides a composite material brake block. The composite material brake block comprises the following raw materials including viscose, xu cotton18# fibers, nitrile butadiene rubber powder, cashew nut shell oil friction powder, boron phenolic resin, red copper, white zi stone powder, white mica powder, steel cotton fibers, iron oxide green, sepiolite fibers, petroleum coke, graphite, copper sulphide, vermiculite powder, superfine ferric oxide powder, chromite and tire powder. The invention further provides a machining method of the composite material brake block. The composite material brake block and the method have the advantages that in the formula research process, through a large quantity of tests, multiple ingredients are reasonably matched, it is guaranteed that all materials can be sufficiently achieved in the materials, all raw materials can offset shortcomings of performance of all raw materials, and the better performance can be achieved through matching. In the using process, the high and stable friction coefficients and the low abrasion rate are achieved, and rusting is not prone to being caused.

Description

technical field [0001] The invention relates to the field of automobile machinery, in particular to a composite material brake pad and a processing method thereof. Background technique [0002] Brake pads are also called brake pads. In the braking system of a car, the brake pads are the most critical safety parts, and the brake pads play a decisive role in the quality of all braking effects. [0003] Earlier automobile brake pads were asbestos-type brake pads, but asbestos has been confirmed by the medical profession to be a carcinogen. Every time you brake, the brake pads will emit millions of asbestos fibers into the air, and the needle-like fibers can easily enter the lungs and stay there, causing irritation, which can eventually lead to the occurrence of lung cancer; in addition, asbestos-type There is another important problem with brake pads: because asbestos is adiabatic, its thermal conductivity is particularly poor. After repeated use, the brake will cause heat to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023C09K3/14F16D2200/0008F16D2200/0034F16D2200/006F16D2200/0086F16D2250/0038
Inventor 赵冰清
Owner ANHUI XIANGCHI VEHICLE IND CO LTD