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Friction material for vehicles without asbestos and metal

A friction material, metal-free technology, applied in the field of friction materials, can solve the problems of poor comfort, high thermal conductivity, easy to rust, etc., and achieve the effect of eliminating braking noise and thermal recession, obvious economic and social benefits, and overcoming adhesion and occlusion.

Inactive Publication Date: 2008-10-08
NINGGUO FEIYING AUTO SPARE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, semi-metallic friction materials that have been widely used in western countries have replaced asbestos fibers with metal fibers. However, the existence of a large number of metal components in the formula structure of this type of material has led to the existence of defects such as high hardness, high thermal conductivity, and easy corrosion of the product.
The existence of these defects may lead to a series of problems such as potential safety hazards and poor comfort. More importantly, semi-metallic materials can no longer meet the new technical performance requirements of modern automotive braking systems for friction materials.

Method used

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  • Friction material for vehicles without asbestos and metal
  • Friction material for vehicles without asbestos and metal

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Embodiment Construction

[0021] The invention is an asbestos-free and metal-free vehicle friction material, which is suitable for the manufacture of automobile brake linings. The finished product contains carbon fiber, aramid fiber, ceramic fiber, vermiculite and other materials, and the content of asbestos and metal in the formula is uniform. to zero.

[0022] The present invention will be further described below in conjunction with embodiment.

[0023] 1. Asbestos-free and metal-free automotive friction materials

[0024] 1. Asbestos-free and metal-free automotive friction materials include the following components (see Table 1), and their weight percentages are: fiber materials 15-25%, binders 4-10%, ceramic materials 18-25%, lubricants 12-18%, the remainder of filler.

[0025] The above filler is a mixture of barite, dolomite, sodium fluoride, friction powder, vermiculite and petroleum coke powder.

[0026] 2. By weight,

[0027] The fiber materials include: 1-3 aramid fibers, 8-11 ceramic fib...

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Abstract

The invention relates to a non-asbestos and metal-free vehicular friction material, the percentage by weight is: 15~25% fibrous material, 4~10% binding agent, 18~25% ceramic material, 12~18% lubricating agent and marginal filling materials, the material are composition of heavy spar, dolomite, sodium fluoride, friction powder, vermiculite and oil coke powder. The non-asbestos and metal-free vehicular friction material is manufactured through mixing, coining, heat treating and after treatment. The invention meets the requirement of the braking operation mode of the modern vehicles.

Description

technical field [0001] The invention relates to a friction material, in particular to an asbestos-free and metal-free vehicle friction material. Background technique [0002] The development of friction materials has always been closely linked with the development of the automobile manufacturing industry. It has a history of more than 100 years. During the development of more than 100 years, asbestos-based products have always occupied an important position. Since the 1970s, when western industrialized countries raised the issue of the harmfulness of asbestos to the human body, the asbestos-free movement in the friction material manufacturing industry first emerged in European and American countries. The metal fiber of the semi-metallic friction material born in the 1980s replaced the asbestos fiber and was quickly promoted and popularized. It still occupies half of the friction material product share in the world. However, there are huge differences in the physical and che...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/14C09K3/14
Inventor 戴志轩
Owner NINGGUO FEIYING AUTO SPARE PARTS
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