Method for preparing brake pad friction material by using rice and wheat straws

Abstract

The invention discloses a method for preparing a brake pad friction material by using rice and wheat straws and relates to the technical field of composite materials. The brake pad friction material has the following formula: 15 percent of toughened fibers, 16 percent of modified resin, 14 percent of a friction increase agent, 9 percent of sulfur and tin powder, 1.6 percent of carbon black, 2.5 percent of zinc oxide, 8.9 percent of barium sulfate, 10 percent of rice and wheat straw carbon powder, 6 percent of aluminum hydroxide, 14 percent of modified li beads and 3 percent of zinc stearate. The materials are uniformly mixed and stirred, pressed in a mold and subjected to machining such as grinding and chamfering according to a technical requirement to obtain a braking pad. According to the method, the rice and wheat straws are used as raw materials to prepare carbon powder which replaces graphite in a friction material formula, so that the atmospheric pollution caused by severe combustion of straws in each year is alleviated, the production cost of the brake pad is reduced, and the brake performance and the braking effect are enhanced; the friction coefficient is stable; the brake pad is simple in structure, low in brake noise, environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for making a brake pad friction material from rice and wheat straw. Background technique [0002] Since the reform and opening up, the national economy has grown rapidly, and technological innovation and independent innovation have become the mainstream of domestic industrial development. With the improvement of people's living standards, the demand for automobiles is also increasing. In recent years, the number of production and sales of my country's automobile industry has continued to grow, and my country has become a big country of automobile production and sales. The most important safety system in a car is the braking system. All braking components are safety parts. The brake pad is one of the important links in the entire braking system, which directly affects the reliability of the entire braking system. The brake pad and the brake disc (drum) rub a...

AI Technical Summary

Problems solved by technology

However, due to the decrease of graphite mineral resources year by year, the market price of graphite continues to rise, and the cost increases, which is difficult for enterprises to bear.

The technicians of scientific research units and enterprises are constantly exploring and researching, hoping to develop a substitute for phosphorus flake graphite friction material with superior performance to meet market demand. Although some progress has been made, there are still some problems in practical application. Technical challenges not yet overcome

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