Few-metal-content low-density noise-free resin based composite friction material and preparation method

A composite friction material, low-density technology, applied in friction linings, chemical instruments and methods, mechanical equipment, etc., can solve the problems of high metal content, energy consumption, difficult to eliminate, etc., to reduce material density and low manufacturing costs. , the effect of low wear rate

Inactive Publication Date: 2017-05-24
HANGZHOU KEBO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A large number of metal fibers lead to high hardness and density of semi-metallic friction materials, which easily cause obvious noise and are difficult to eliminate
[0006] In addition, due to the high metal content, the density is high, which brings too much load to the vehicle and causes a lot of energy consumption.

Method used

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  • Few-metal-content low-density noise-free resin based composite friction material and preparation method
  • Few-metal-content low-density noise-free resin based composite friction material and preparation method
  • Few-metal-content low-density noise-free resin based composite friction material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare friction material raw materials according to the following ratio:

[0030]

[0031]

[0032] According to above formula design, process according to the following steps:

[0033] Ingredients: Weigh each component according to the above ratio;

[0034] Mixing: Put the aramid fiber into the high-speed mixer to disperse for 1 minute, and then put other materials except expanded graphite and natural graphite into the mixer for 20 minutes. It is better to add expanded graphite, Natural graphite was dropped into the mixer and mixed for 5 minutes;

[0035] Molding: Weigh the mixture according to the product model of the brake pad, pour it into the hot pressing mold, and press the pressure at 180-240kgf / cm 2 ,The hot-pressing temperature is 140-150°C, exhaust 3-6 times, and the holding time depends on the thickness of the brake pad, generally 200-240s;

[0036] Heat treatment: rise from room temperature to 120°C within half an hour, then 120°C for one hour, 130...

Embodiment 2

[0039] Prepare friction material raw materials according to the following ratio:

[0040]

[0041] Processing steps are with embodiment 1.

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Abstract

The invention discloses a few-metal-content low-density noise-free resin based composite friction material, which is prepared from the following components: a reinforced fiber, a binder, flaky graphite, a filling material, precipitated barium sulfate, frictional powder, coke, a complexing agent, copper sulfide, molybdenum disulfide, chromite powder, alumina, expanded graphite, natural graphite and granular graphite. The invention also further provides a preparation method of the few-metal-content low-density noise-free resin based composite friction material. The few-metal-content low-density noise-free resin based composite friction material provided by the invention has characteristics of low noise, low density, a stable frictional coefficient, low wear rate and the like.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of friction materials for automobile braking systems, in particular to the technical field of a resin-based composite friction material with low metal content, low density, and noiseless, and a preparation method. [0003] 【Background technique】 [0004] At present, the friction materials used for automobile brake pads at home and abroad mainly include asbestos resin (the use of which has been restricted by national regulations) type friction materials, non-asbestos resin type friction materials, metal fiber reinforced friction materials, semi-metal fiber reinforced friction materials and hybrid fiber Reinforced friction materials, etc. Non-asbestos-based friction materials are currently the mainstream of domestic friction materials, and a variety of alternative fibers are widely used, including semi-metallic materials, carbon fiber materials, NAO materials, etc. Among them, semi-metallic friction ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02
CPCC09K3/149F16D69/028
Inventor 张鸿羽蔡斌姜梦烈
Owner HANGZHOU KEBO TECH
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