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Nonmetal friction material for vehicle disc brake and preparation method and application thereof

A disc brake and friction material technology, applied in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve the problem of high cost of NAO type friction materials, high price of high temperature resistant organic fibers, low friction coefficient and thermal stability. and other problems, to achieve the effect of excellent thermal recession performance, excellent thermal recession performance and high friction coefficient

Active Publication Date: 2017-06-30
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.
[0009] (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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  • Nonmetal friction material for vehicle disc brake and preparation method and application thereof
  • Nonmetal friction material for vehicle disc brake and preparation method and application thereof
  • Nonmetal friction material for vehicle disc brake and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0031] A non-metallic friction material for automobile disc brakes. The friction material is composed of the following proportions in terms of mass fraction: 8 parts phenolic resin; 20 parts mineral fiber; 2 parts carbon fiber; 2 parts aramid fiber; 10 parts ceramic fiber ; 6 parts of calcium whisker; 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; Molybdenum sulfide 4 parts.

[0032] Among them, barium sulfate is used as a filler.

[0033] The preparation method is as follows:

[0034] (1) After weighing the raw materials in sequence according to the above ratio, mix the raw materials uniformly with a dry mixer to obtain the mixture and store it for later use;

[0035] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and maintain the pressure at a pressure of 15Mpa for 3 ...

Embodiment 2

[0041] A non-metallic friction material for automobile disc brakes. The friction material is composed of 7 parts phenolic resin; 25 parts mineral fiber; 1.5 parts polypropylene fiber; ceramic fiber 6.5; calcium whisker 10 Parts; 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.

[0042] Among them, barium sulfate is used as a filler.

[0043] The preparation method is as follows:

[0044] (1) After weighing the raw materials in sequence according to the above ratio, mix the raw materials uniformly with a dry mixer to obtain the mixture and store it for later use;

[0045] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and maintain the pressure at a pressure of 15Mpa for 3 seconds, then release the pressure and exhaust. Relieve the pressure and exhaust for 3 seconds...

Embodiment 3

[0051] A non-metallic friction material for automobile disc brakes. 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; 12 parts of barium sulfate; 3 parts of friction powder; 6 parts of vermiculite powder; 11 parts of graphite; 5 parts of coke powder; 1 part of carbon black; 11 parts of metal sulfide; 4 parts of tire powder; 4 parts of molybdenum sulfide.

[0052] Among them, barium sulfate is used as a filler.

[0053] The preparation method is as follows:

[0054] (1) After weighing the raw materials in sequence according to the above ratio, mix the raw materials uniformly with a dry mixer to obtain the mixture and store it for later use;

[0055] (2) After weighing the mixture obtained in step (1), put it into a mold preheated to 160±5°C, pressurize and maintain the pressure at a pressure of 15Mpa for 3 seconds, then ...

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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

[0001] (1) Technical field [0002] 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. [0003] (2) Background technology [0004] 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 non-metallic friction material for automobile disc brakes of the present invention belongs to the category of dry friction materials. [0005] Dry friction materials are usually multi-element composite materials composed of reinforcing fibers-friction performance modifiers (fillers) and other components bonded with adhesives. Its development has gone through the following stages according to the main reinforcing fibers used: [0006] (1) Asbestos type: The content of asbestos ...

Claims

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Application Information

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IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023F16D69/025F16D2200/006F16D2200/0065F16D2200/0086
Inventor 李通
Owner 李通
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