Hemp fiber doped saloon car brake pad and preparation process thereof

A technology of hemp fiber and brake pad is applied in the field of asbestos-free organic-based car brake pad and its preparation process, which can solve the problems of poor friction performance, poor compatibility, and affecting the progress of replacing asbestos.

Inactive Publication Date: 2012-04-11
JIANGSU ANJIE AUTO PARTS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, all natural fibers, including hemp fibers, have more or less defects, such as hard and brittle fibers, poor f

Method used

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  • Hemp fiber doped saloon car brake pad and preparation process thereof
  • Hemp fiber doped saloon car brake pad and preparation process thereof
  • Hemp fiber doped saloon car brake pad and preparation process thereof

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[0039] The hemp fiber used in the present invention should have the advantages of environmental protection, sound attenuation, stable friction performance, low cost, etc. It also needs to be treated by physical methods to improve its hardness and brittleness, low friction coefficient, poor compatibility and other shortcomings. Therefore, microwave-ultrasonic -Laser combined treatment is to increase the flexibility of hemp fiber, improve friction performance and heat resistance, and improve its adhesion while maintaining the advantages of hemp fiber.

[0040] The technological process and parameters of the microwave-ultrasonic-laser combined treatment method are as follows:

[0041] Alkali treatment: First, put the hemp fiber in a 6% NaOH solution and soak at a constant temperature of 70°C for 3 hours, with a bath ratio of 1:20, and stir with a stirrer. The stirrer changes its rotation direction every 2s. Its device such as figure 1 Shown. The stirring motor 1 is an AC motor with a...

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Abstract

The invention relates to a hemp fiber doped asbestine organic group free saloon car brake pad. The brake pad has the characteristics of stable friction coefficient, strong heat decay resistance, small abrasion rate, small vibration noise, low cost and the like, and is environmentally-friendly. According to the invention, the hemp fiber is subjected to combined treatment of microwave, ultrasonic wave and laser, and the hemp fiber is subjected to alkaline treatment before microwave treatment, thus on the basis of maintaining the advantages of the hemp fiber, the flexibility of the hemp fiber isenlarged, the friction property and heat resistance of the hemp fiber are improved, and the cohesiveness of the hemp fiber is improved. The invention also provides a preparation process of a saloon car brake pad.

Description

technical field [0001] The invention relates to a car brake pad and a preparation process thereof, in particular to an asbestos-free organic group car brake pad infiltrated with modified hemp fibers and a preparation process thereof. Background technique [0002] At present, the new friction materials for automobile brake pads mainly include semi-metallic friction materials, composite fiber materials and powder metallurgy materials. Since the grinding particles and asbestos dust produced by asbestos brake pads during the braking process have a strong carcinogenic effect, many countries have banned the production and use of asbestos fiber products since the 1970s. my country banned asbestos brake pads from October 1, 2003. It is urgent to develop non-asbestos friction materials. Alternative materials for asbestos fibers include steel fibers, glass fibers, aramid fibers, mineral fibers, ceramic fibers, carbon fibers, plant fibers, etc. [0003] Although the steel fiber rein...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L9/02C08L1/02C08K13/04C08K7/06C08K7/10C08K3/34C08K3/04C08K3/30C08K3/22C08K3/26C08J5/06F16D69/02
Inventor 卢从生
Owner JIANGSU ANJIE AUTO PARTS
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