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Carbon-based friction material for drum brake of light passenger vehicle and preparation method of carbon-based friction material

A technology of drum brakes and friction materials, applied in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve the problems of non-compliance with environmental protection requirements, large thermal decay of friction coefficient, high wear rate, etc., and save manpower and electricity resources, long service life and high production efficiency

Active Publication Date: 2012-12-05
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 light-duty passenger car drum brakes and a preparation method thereof, which mainly solves the problem of large thermal decay of the friction coefficient, high wear rate and easy generation of brake noise in the brake pads of the prior art. And the formula often contains asbestos-like fibers, which do not meet environmental protection requirements and other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The carbon-based friction material for light-duty passenger car drum brakes of this example has the following composition and weight:

[0026] 15 parts of phenolic resin, 5 parts of carbon fiber, 5 parts of cellulose fiber, 20 parts of silicate fiber, 8 parts of nitrile rubber (powder), 30 parts of natural graphite, 2 parts of magnesium oxide, 15 parts of composite abrasive. The composition and weight parts of the composite abrasive are: 10 parts of brown corundum, 40 parts of quartz sand, 40 parts of potassium feldspar, and 10 parts of antimony sulfide. The fineness of brown corundum is 320 mesh or more, the fineness of quartz sand is 200 mesh, the fineness of potash feldspar is 120 mesh, and the fineness of antimony sulfide is 200 mesh.

[0027] The preparation method of carbon-based friction material for drum brake of light passenger car includes:

[0028] a. After weighing the raw materials, mix the proportioned raw materials with a dry mixer and store them fo...

Embodiment 2

[0037] Example 2: The carbon-based friction material for light-duty passenger car drum brakes of this example has the following composition and weight:

[0038] 18 parts of phenolic resin, 5 parts of carbon fiber, 5 parts of cellulose fiber, 20 parts of silicate fiber, 5 parts of nitrile rubber (powder), 30 parts of natural graphite, 1 part of magnesium oxide, 16 parts of composite abrasive. The composition and weight parts of the composite abrasive are: 10 parts of zircon, 40 parts of chromite powder, 40 parts of potash feldspar, and 10 parts of molybdenum disulfide. The fineness of zircon is more than 320 mesh, the fineness of chromite powder is 200 mesh, the fineness of potash feldspar is 120 mesh, and the fineness of molybdenum disulfide is 320 mesh.

[0039] The preparation method of carbon-based friction material for drum brake of light passenger car includes:

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

Embodiment 3

[0049] Example 3: The carbon-based friction material for light-duty passenger car drum brakes of this example has the following composition and weight:

[0050] 18 parts of phenolic resin, 5 parts of carbon fiber, 5 parts of cellulose fiber, 20 parts of silicate fiber, 5 parts of nitrile rubber (powder), 28 parts of natural graphite, 1 part of magnesium oxide, 18 parts of composite abrasive. The composition and weight parts of the composite abrasive are: 20 parts of brown corundum, 40 parts of chromite powder, and 40 parts of kyanite. The fineness of brown corundum is more than 320 mesh, the fineness of chromite powder is 200 mesh, and the fineness of kyanite is 60 mesh.

[0051] The preparation method of the carbon-based friction material for the light-duty passenger car drum brake includes:

[0052] a. After weighing the raw materials, mix the proportioned raw materials with a dry mixer and store them for later use;

[0053] b. Weigh the mixture prepared in step a and put it into...

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Abstract

The invention relates to a composition and a preparation method of an asbestos-free friction material, particularly to a carbon-based friction material for a drum brake of a light passenger vehicle and a preparation method of the carbon-based friction material and mainly aims to solve the technical problems of serious friction coefficient heat fading, high wearing rate, easiness for generating braking noise and capability of meeting the environment-friendly requirement due to the fact that almost any ingredient contains asbestos-similar fiber in a brake block in the prior art. The material provided by the invention is a novel carbon-based friction material between a carbon-carbon base and an NAO or ceramic base; with carbon materials of carbon fiber, graphite and the like as main materials and resin binder and a small amount of inorganic or organic filler as auxiliary materials, the carbon-based friction material is produced in a hot press molding mode. Compared with the NAO type or ceramic based friction material, the carbon-based friction material provided by the invention has the following advantages of more reliable braking ability, low braking noise, long service life and no damage to a friction couple.

Description

Technical field [0001] The invention relates to a composition and a preparation method of a non-asbestos friction material, in particular to a carbon-based friction material for light passenger car drum brakes and a preparation method thereof. Background technique [0002] Friction materials are a type of functional materials used for friction transmission or friction braking in automobiles or construction machinery. According to their working environment, they can be divided into two categories: dry and wet. The so-called carbon-based friction material in the present invention is a drum brake lining for light passenger vehicles, which belongs to the category of dry friction materials. [0003] (Dry) friction materials are usually multi-element composite materials composed of phenolic resin-reinforcing fibers-friction performance modifiers (fillers), etc. Its development has gone through the following three stages according to the main reinforcing fibers used: [0004] (1) Asbestos ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14C08J5/14B29C43/58
Inventor 章景羲
Owner 杭州吉成汽车零部件有限公司
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