Non-metallic Friction Material for Automobile Disc Brake and Its Application

A disc brake and friction material technology, applied in the direction of friction linings, other chemical processes, chemical instruments and methods, etc., can solve the problem of high cost of NAO type friction materials, low friction coefficient, poor thermal stability, high temperature resistance organic fiber price High cost and other problems, to achieve the effect of excellent thermal recession performance, excellent thermal recession performance, and reduced friction coefficient

Active Publication Date: 2018-10-23
李通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-temperature-resistant organic fibers represented by aramid fibers are expensive, so the cost of NAO-type friction materials is relatively high, and they have not been well promoted in the automotive market so far.
[0007] (4) Ceramic matrix: A large number of cheap ceramic fibers are used to replace part of the organic fibers in the NAO formula, which better solves the cost problem of NAO-type friction materials, but is still inferior to typical NAO in terms of friction coefficient and thermal stability. type friction material

Method used

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  • Non-metallic Friction Material for Automobile Disc Brake and Its Application
  • Non-metallic Friction Material for Automobile Disc Brake and Its Application

Examples

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Effect test

Embodiment 1

[0027] A non-metallic friction material for an automobile disc brake, the friction material is composed of the following proportions in terms of mass fraction: 8 parts of phenolic resin; 20 parts of mineral fiber; 2 parts of carbon fiber; 2 parts of aramid fiber; 10 parts of ceramic fiber 6 parts of calcium whiskers; 12 parts of barium sulfate; 3 parts of friction powder; 6 parts of vermiculite powder; 11 parts of graphite; 3 parts of coke powder; 1 part of carbon black; 8 parts of metal sulfide; 4 parts of tire powder; 4 parts.

[0028] Among them, barium sulfate is used as filler.

[0029] Its preparation method is as follows:

[0030] (1) After weighing the raw materials sequentially according to the above proportioning ratio, the raw materials are mixed evenly with a dry mixer to obtain a mixture, which is stored for subsequent use;

[0031] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and hold the pressure at 1...

Embodiment 2

[0037] A non-metallic friction material for an automobile disc brake, the friction material is composed of the following proportions in terms of mass fraction: 7 parts of phenolic resin; 25 parts of mineral fiber; 1.5 parts of polypropylene fiber; 6.5 parts of ceramic fiber; 10 parts of calcium whisker 12 parts of barium sulfate; 3 parts of friction powder; 8 parts of vermiculite powder; 11 parts of graphite; 1 part of carbon black; 11 parts of metal sulfide; 2 parts of tire powder; 2 parts of molybdenum sulfide.

[0038] Among them, barium sulfate is used as filler.

[0039] Its preparation method is as follows:

[0040] (1) After weighing the raw materials sequentially according to the above proportioning ratio, the raw materials are mixed evenly with a dry mixer to obtain a mixture, which is stored for subsequent use;

[0041] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and hold the pressure at 15Mpa for 3 second...

Embodiment 3

[0047] A non-metallic friction material for an automobile disc brake, the friction material is composed of the following proportions in terms of mass fraction: 7 parts of natural rubber; 18 parts of mineral fiber; 5 parts of aramid fiber; 7 parts of glass fiber; calcium whisker 6 parts; barium sulfate 12 parts; friction powder 3 parts; vermiculite powder 6 parts; graphite 11 parts; coke powder 5 parts; carbon black 1 part; metal sulfide 11 parts; tire powder 4 parts; molybdenum sulfide 4 parts.

[0048] Among them, barium sulfate is used as filler.

[0049] Its preparation method is as follows:

[0050] (1) After weighing the raw materials sequentially according to the above proportioning ratio, the raw materials are mixed evenly with a dry mixer to obtain a mixture, which is stored for subsequent use;

[0051] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and hold the pressure at 15Mpa for 3 seconds, release the pressu...

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Abstract

The invention relates to the technical field of friction materials, and discloses a nonmetal friction material for a vehicle disc brake and a preparation method and application thereof. The friction material comprises the following components in percentage by mass: 7-10% of binding agent, 15-25% of mineral fiber, 6-10% of inorganic fiber, 1.5-5% of organic fiber, 6-15% of calcium whisker, 12-20% of filler, 3-5% of friction powder, 6-8% of vermiculite powder, 15-26% of carbon friction reducing material, 6-15% of metal sulfide, 2-5% of tire powder, and 1-4% of molybdenum sulfide. The invention further discloses a preparation method of the friction material; and according to the method, the friction material is prepared through weighing, mixing, forming treatment and heat treatment process after formation. The friction material with higher friction coefficient, lower wear rate and excellent heat fade performance is prepared as a brake pad with high brake torque, comfortable emergent brake, short brake distance and lower heat fade.

Description

(1) Technical field [0001] The invention relates to the technical field of friction materials, in particular to a non-metallic friction material for automobile disc brakes and a preparation method and application thereof. (2) Background technology [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 non-metallic friction material for automobile disc brakes in the invention belongs to the category of dry friction materials. [0003] Dry friction materials are usually multi-component composite materials bonded by reinforcing fibers-friction performance regulators (fillers) and other components with adhesives. Its development has gone through the following stages according to the main reinforcing fibers used: [0004] (1) Asbestos type: The main manifestation is that the conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023F16D69/025F16D2200/006F16D2200/0065F16D2200/0086
Inventor 李通
Owner 李通
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