Aramid fiber clutch surface patch and preparation technique thereof

Abstract

The invention provides an aramid fiber clutch surface patch. The aramid fiber clutch surface patch is prepared from, by weight, 3 parts of chemigum, 6-8 parts of glass fibers, 6-8 parts of aramid fibers, 6-8 parts of kapok fibers, 1-2 parts of a plant powder agent, 2-4 parts of graphite, 3-5 parts of carbon black, 2-4 parts of nanosilicon dioxide, 4-6 parts of aluminium hydroxide, 1-3 parts of zinc stearate, 10-13 parts of phenolic resin and 0.5-1 part of sulfur. The aramid fiber clutch surface patch is stable in friction coefficient, good in jitter resistance and high in rotating burst strength, has stable friction performance under high temperature, is not prone to declining and is an environment-friendly product. The invention further provides a preparation technique of the aramid fiberclutch surface patch, the preparation technique is optimized for specific components, and the components are fused and crosslinked more sufficiently. Besides, the preparation technique is environmentally friendly and simple in process.

Description

technical field [0001] The invention relates to the technical field of automobile transmission systems, in particular to an aramid fiber clutch face and a preparation process thereof. Background technique [0002] The clutch face is a polymer ternary composite material, which is mainly composed of polymer binder (resin and rubber), reinforcing material, friction filler and other compounding ingredients. It is produced through a series of production and processing. products. Due to the vigorous development of the automobile industry, its requirements for the transmission system are also more stringent, and the friction material must comply with the demand. On the one hand, it must meet the various performance indicators that should be achieved during the transmission of the automobile. On the other hand, it must meet the safety, comfort and stability of use. , Harmless to the human body, no pollution to the environment, and also have the effect of saving energy and reducing ...

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Problems solved by technology

[0003] CN1947990A discloses a wet method for producing clutch face sheets for automobiles. Since a large amount of toluene or gasoline is used in the dipping rubber solution system, the feed ratio of the rubber material and the solvent is 1:0.6-1.0, and the preparation process uses A large amount of organic solvents will not only cause great pollution to the environment, but also increase production costs

[0004] CN101285512A discloses a method of using water-soluble phenolic resin as an adhesive, and using water as a solvent to make a slurry to prepare a clutch face sheet. Due to the low bonding strength between fibers and resin, the dried slurry is easy to process and use. detach from fiber surface

In order to solve the problem of low bonding strength between the resin and the fiber, latex was added during the preparation process to enhance the bonding strength of the resin, and an anti-delamination modifier was added to avoid the delamination of the water-soluble phenolic resin solution, so that not only The production cost is increased, and at the same time, too much latex will reduce the heat resistance and water resistance of the product, and the product will experience serious thermal decline during use, shorten the service life, change the friction performance, and cause slippage , thereby affecting driving safety

[0005] CN101792571A discloses a new type of rubber-free winding clutch face, which uses water-soluble phenolic resin as the bonding material, and the heat-resistant temperature of the prepared clutch face can be as high as 350°C or higher, and has good heat resistance, but the difference in friction coefficient is relatively large , the total wear range is wide, the friction stability and wear resistance are not very good

[0006] These clutch discs often do not have relatively stable friction performance, and are prone to recession. Most of the materials used are chemical materials, which cause serious pollution, complicated processes, and poor environmental adaptability.

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