Friction material for electric vehicle brake piece

Abstract

The invention discloses a friction material for an electric vehicle brake piece. The friction material comprises, by weight, 30 parts of carbon fibers, 15 parts of aramid fibers, 50 parts of nitrile rubber buna, 30 parts of butadiene styrene rubber, 20 parts of carbon black, 12 parts of compound mineral fibers, 3 parts of sulphur, 4 parts of vermiculite, 7 parts of epoxy resin, 15 parts of barium sulfate, 8 parts of graphite, 1 part of an accelerant, 4 parts of a stabilizing agent and 2 parts of water. The friction material has the beneficial effects of being high in wear resistance and pressure resistance, stable in friction coefficient, low in fading rate, free of noise and the like.

Description

technical field [0001] The invention belongs to the field of friction materials, and in particular relates to a friction material for electric vehicle brake pads. Background technique [0002] With the rapid development of the modern transportation industry and the increasing number of electric vehicles and motorcycles, the brake pads in the braking system are required to have a sufficiently stable friction coefficient, certain high-temperature mechanical strength, good wear resistance, no noise, No pollution to the environment and other characteristics, the braking performance of the brake pad directly affects the driving safety of the vehicle and the cleanliness of the city. The current brake pads of electric vehicles and motorcycles mainly have the following problems: (1) The brake noise is too large, which affects the living environment of residents and becomes a new source of noise pollution in the city; (2) The friction pads wear too fast and have a short service life,...

AI Technical Summary

Problems solved by technology

The current brake pads of electric vehicles and motorcycles mainly have the following problems: (1) The brake noise is too large, which affects the living environment of residents and becomes a new source of noise pollution in the city; (2) The friction pads wear too fast and have a short service life, posing safety hazards and waste of resources; (3) The formula of the friction plate material contains a carcinogen-asbestos fiber, the dust of which can pollute the air, and is easy to cause cancer if inhaled by the human body; Standard braking distance

In addition, traditional asbestos-type friction materials still occupy a dominant position in the electric vehicle and motorcycle brake pad market due to their low price and good heat resistance, but they have poor thermal decay resistance and have a strong risk of carcinogenicity. my country has issued a ban in 2003 to prohibit the development of asbestos-type brake pads