Heavy-duty vehicle disk brake pad frictional material and brake pad preparing process

Abstract

The invention relates to the technical field of brake pads, particularly to a heavy-duty vehicle disk brake pad frictional material and a brake pad preparing process. The heavy-duty vehicle disk brakepad frictional material is mainly composed of raw materials including, by weight part, 5-10 parts of boron-modified phenolic resin, 1-5 parts of carbon fiber, 1-5 parts of PPTA-pulp (poly-p-phenyleneterephthamide pulp), 18-25 parts of steel wool, 3-8 parts of basalt long fiber, 5-8 parts of complex sulfide, 2-6 parts of aluminum oxide, 2-6 parts of zinc oxide, 8-12 parts of graphite, 5-10 partsof calcium carbonate whisker, 3-8 parts of hydrated calcium silicate, 1-2 parts of EPDM (ethylene-propylene-diene monomer) rubber particles, 3-6 parts of black frictional powder and 4-6 parts of vermiculite. According to the heavy-duty vehicle disk brake pad frictional material and the brake pad preparing process, a prepared brake pad can achieve a good frictional factor of 0.38-0.45 within a temperature interval of 100-800 DEG C and a wear rate of 0.12*10<-7> cm3 (N*m)<-1> at 350 DEG C. Field use in mountainous regions in Yunnan, Szechwan, Guizhou, Tibet and the like proves that the brake padis stable in braking, sensitive in downhill braking and free from smoking and achieves a service life of 70-100 thousand kilometers.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a disc brake pad friction material for heavy vehicles and a preparation process for the brake pads. Background technique [0002] With the rapid development of the world economy, the demand for logistics is also increasing. As a convenient, fast and affordable mode of transportation, road transportation is becoming more and more popular. As the main vehicle of road transportation, the number of heavy-duty trucks is also increasing day by day. Due to the large weight of heavy-duty vehicles, the requirements for the braking system are relatively high, especially in the case of complex road conditions in mountainous areas, the requirements for brake pads are more stringent than ordinary road conditions. First of all, in mountainous road conditions, the brake pads are required to have excellent temperature resistance. If the brake disc is continuously downhill, the temperature o...

AI Technical Summary

Problems solved by technology

Secondly, the lifespan of the existing brake pads under mountainous road conditions is much shorter than that under normal road conditions, and some of them can only run a few thousand kilometers. Even some original products have unsatisfactory service life. The cost of using a car has caused a great increase

[0003] Although there are a wide variety of brake pads on the market, there is no brake pad specially developed for heavy-duty trucks in mountainous road conditions.