A kind of biological fiber reinforced friction material and its preparation method

Abstract

The invention provides a biofiber-reinforced friction material and a preparation method thereof, and belongs to the technical field of braking friction materials. The biofiber-reinforced friction material is prepared from 6%-21% of super hydrophobic and oleophobic pine needle fiber and pine needle powder, 12%-61% of phenolic resin, 2%-18% of graphite, 2% or 10% of aluminium oxide, 0%-3% of rubber powder, 10%-23% of barium sulfate, 1%-3% of frictional powder, 2%-15% of foam iron powder and 1%-10% of carbon black, wherein the content ratio of the super hydrophobic and oleophobic pine needle fiber to the pine needle powder is k1, and (5.5:1)<=k1<=(7.5:1). According to the biofiber reinforcement friction material and the preparation method thereof, a surface coating and a surface microstructure of the super hydrophobic and oleophobic pine needle fiber are coupled, the coupling synergistic effect between the surface coating and the surface microstructure is improved, the influence of water, oil, ice and the like on the performance of the reinforced fiber can be avoided, and the surface microstructure of the fiber can improve the binding strength between the fiber and a friction material substrate; the natural pine needle powder can well stabilize the friction factor and reduce friction braking noise and damage to a pair; the comprehensive performance of the friction material can be improved, the abrasion loss can be reduced, the service life can be prolonged, environmental pollution can be prevented, resources can be saved, and the environment can be protected.

Description

technical field [0001] The invention belongs to the technical field of brake friction materials, and in particular relates to a biological fiber reinforced friction material and a preparation method thereof. Background technique [0002] Brake friction material is a key component to ensure the safe operation of vehicle equipment such as automobiles, oil drilling rigs, and trains. Therefore, people's requirements for the performance of friction materials are becoming more and more stringent. First of all, the composition of the friction material, especially the fiber used as a reinforcing component, must have excellent stability. It is not affected by external environmental factors such as water and oil, and the fiber and the material matrix have a good bonding force. Secondly, , The friction material should have a stable friction coefficient and excellent wear resistance. In addition, the friction material has less friction on the pair and the noise generated is weaker. The...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem that the reinforced fiber of the friction material is invalid due to the influence of external factors such as water, oil and ice for a long time, the bonding force between the reinforced fiber and the matrix of the friction material is poor, the friction factor of the friction material is unstable, the amount of wear is large, the braking noise is large and For the serious problems of secondary wear, a preparation method of superhydrophobic and oleophobic pine needle fibers and pine needle powder, and the application of superhydrophobic and oleophobic pine needle fibers and pine needle powder in friction materials