Preparation method of friction material

Abstract

The invention relates to the technical field of braking of vehicles, in particular to a preparation method of a friction material. The preparation method is characterized by comprising the following steps: using a water-based solvent to mix raw materials and preparing the mixture into prefabricated particles; carrying out temperature-pressure forming of the prefabricated particles and preparing the prefabricated particles into a blank; and carrying out heat treatment to the blank. The preparation method overcomes the defects that in the traditional method, the hot pressing temperature is high,the time is long, the resin can generate a certain gas with irritant smell in the process of solidification reaction, and an operator needs to operate in high-temperature environment for long time; the adopted temperature-pressure method has low temperature, short time, incomplete solidification reaction, has no obvious smell generated in the process and obviously reduces the thermal radiation effect to the operator.

Description

Technical field: [0001] The invention relates to the technical field of vehicle braking, in particular to a method for preparing a friction material. Background technique: [0002] With the rapid development of the automobile industry, higher requirements are put forward for various performance indicators of friction materials, especially for environmental protection. This has promoted the process of asbestos-free friction materials, so various forms of asbestos substitute fibers continue to emerge, such as steel fibers, glass fibers, mineral wool, aramid fibers, ceramic fibers, carbon fibers and other artificial synthetic fibers, etc. However, these fibers When applied to friction materials, there are some insurmountable shortcomings to varying degrees. [0003] In some developed countries in Europe and the United States, they pay special attention to the environmental protection indicators during the use of friction materials, and pay attention to the impact of friction m...

AI Technical Summary

Problems solved by technology

At present in the world, only a few European companies have the "warm pressure" production technology, which has become a hot spot for research and application by various European companies. However, the solvents used in the wet mixing they use are all organic-based solvents. Organic-based solvents are prone to odor and cause environmental pollution. Therefore, it is necessary to add an organic solvent vacuum recovery device to the mixer, which leads to problems such as high production costs and large investment in equipment.

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