Carbon-based friction material for automobile disc brake and preparation method thereof

A disc brake and friction material technology, which is applied in the field of carbon-based friction material for automobile disc brakes and its preparation, can solve the problems of high wear rate, large thermal decay of friction coefficient, and non-compliance with environmental protection requirements, and achieve long service life , high friction coefficient, and the effect of stable friction coefficient

Active Publication Date: 2013-01-16
杭州吉成汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a carbon-based friction material for automobile disc brakes and a preparation method thereof. Contains more asbestos-like fibers, does not meet environmental protection requirements and other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the carbon-based friction material for the automobile disc brake of this example, its composition and parts by weight are:

[0027] 15 parts of phenolic resin, 3 parts of carbon fiber, 3 parts of cellulose fiber, 25 parts of silicate fiber, 3 parts of nitrile rubber (powder), 28 parts of natural graphite, 3 parts of magnesium oxide, 20 parts of composite abrasive. The composition and parts by weight of the composite abrasive are: 18 parts of brown corundum, 36 parts of quartz sand, 36 parts of potassium feldspar, and 10 parts of molybdenum disulfide. The fineness of brown corundum is above 320 mesh, the fineness of quartz sand is 200 mesh, the fineness of potassium feldspar is 120 mesh, and the fineness of molybdenum disulfide is above 320 mesh.

[0028] A method for preparing a carbon-based friction material for an automobile disc brake, the method comprising:

[0029] a. After weighing each raw material, mix the proportioned raw materials evenly with a...

Embodiment 2

[0037] Embodiment 2: the carbon-based friction material for the automobile disc brake of this example, its composition and parts by weight are:

[0038] 12 parts of phenolic resin, 3 parts of carbon fiber, 3 parts of cellulose fiber, 25 parts of silicate fiber, 3 parts of nitrile rubber (powder), 28 parts of natural graphite, 3 parts of magnesium oxide, 23 parts of composite abrasive. The composition and parts by weight of the composite abrasive are: 18 parts of zircon, 36 parts of chromite, 36 parts of potassium feldspar, and 10 parts of antimony sulfide. The fineness of zircon is above 320 mesh, the fineness of chromite is 320 mesh, the fineness of potassium feldspar is 120 mesh, and the fineness of antimony sulfide is 200 mesh.

[0039] A method for preparing a carbon-based friction material for an automobile disc brake, the method comprising:

[0040] a. After weighing each raw material, mix the proportioned raw materials evenly with a dry mixer, and store them for later...

Embodiment 3

[0048] Embodiment 3: the carbon-based friction material for the automobile disc brake of this example, its composition and parts by weight are:

[0049] 18 parts of phenolic resin, 3 parts of carbon fiber, 3 parts of cellulose fiber, 25 parts of silicate fiber, 0 part of nitrile rubber (powder), 28 parts of natural graphite, 3 parts of magnesium oxide, 20 parts of composite abrasive. The composition and parts by weight of the composite abrasive are: 20 parts of zircon, 40 parts of chromite, and 40 parts of kyanite. The fineness of zircon is above 320 mesh, that of chromite is 320 mesh, and that of kyanite is 60 mesh.

[0050] A method for preparing a carbon-based friction material for an automobile disc brake, the method comprising:

[0051] a. After weighing each raw material, mix the proportioned raw materials evenly with a dry mixer, and store them for later use;

[0052] b. Use sandblasting or shot blasting to remove scale or rust on the surface of the steel back, then...

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Abstract

The invention relates to a composition and a preparation method of an asbestos-free friction material taking carbon fibre or other carbon materials as a main body, and in particular to a carbon-based friction material for an automobile disc brake and a preparation method of the carbon-based friction material. The friction material and the preparation method of the friction material mainly aim at solving the technical performance problems that a brake pad is high in the heat fading of friction coefficient and wear rate and is easy in the production of brake noises, and as a formulation of the brake pad often contains asbestoid fibre, the brake pad does not meet the requirement of environment-friendliness, etc. The friction material is a novel friction material with a carbon base between a carbon-carbon base and an NAO or ceramic base. The friction material mainly comprises carbon materials such as the carbon fibre and graphite, and comprises accessories such as a resin binder and a small number of inorganic or organic fillers. The friction material is produced by hot press moulding. Compared with a friction material with an NAO or ceramic base, the carbon-based friction material for the automobile disc brake disclosed by the invention has the advantages of being reliable in brake performance, low in brake noises and long in service life, and preventing friction coupling from being damaged.

Description

technical field [0001] The invention relates to a composition and a preparation method of an asbestos-free friction material mainly composed of carbon fiber or other carbon materials, in particular to a carbon-based friction material for an automobile disc brake and a preparation method thereof. Background technique [0002] Friction material is a kind of functional material used for friction transmission or friction braking in automobiles or engineering machinery. According to its working environment, it can be divided into two categories: dry type and wet type. The so-called carbon-based friction material of the present invention is an automobile disc brake lining and belongs to the category of dry friction materials. [0003] (Dry) friction materials are usually multi-component composite materials composed of phenolic resin-reinforcing fiber-friction performance regulator (filler), etc., and its development has gone through the following four stages according to the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C08L61/06C08K13/04C08K7/06C08K7/10
Inventor 章景羲
Owner 杭州吉成汽车零部件有限公司
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