Asbestos-free organic friction materials and products for transmission and braking with less copper

Abstract

The invention relates to a little-copper and asbestos-free organic friction material for transmission braking. The little-copper and asbestos-free organic friction material consists of the following components: a bonding material, a filling material, a fiber material, an acid-base adjusting material, metal fiber or metal powder, wherein the metal fiber or metal powder is a combination of titanium, aluminum, heat-resistant hard aluminum, red copper and brass, the copper content is less than 5% and comprises spiral microfiber. The used amounts of red copper and brass are reduced, and the metal components are strictly selected and added as titanium, aluminum and heat-resistant hard aluminum, so that the wear of a product is reduced, and a stable friction coefficient and heat resistance are ensured. Also, the spiral micro-carbon fiber is contained, on one hand, a filling and reinforcing role can be played, the inherent vibration rate of the product is improved, and the noise is reduced; on the other hand, the spiral micro-carbon fiber is of a spiral spring type structure, so that the elastic modulus and hardness of the product are reduced, the adhesion among the various components is improved, the strength and toughness of the product are improved, the stability of the friction coefficient of the product is improved, the deterioration of heat resistance is avoided and the aggressiveness to friction duality can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to an asbestos-free organic friction material and products for transmission and braking with little copper. Background technique [0002] Friction material is a component material used in power machinery that relies on friction to perform braking and transmission functions. It includes organic friction materials, powder metallurgy friction materials, and paper-based friction materials by type. Among them, organic friction materials are mainly composed of three categories, including binders, fillers and fiber reinforced materials. [0003] The main components of copper-containing organic friction materials on the market are generally phenolic resin, fiber materials, filler materials and metal materials mainly composed of brass and red copper. The content of brass and red copper is relatively high. They have good thermal conductivity and high temperature friction stability....

AI Technical Summary

Problems solved by technology

[0003] The main components of copper-containing organic friction materials on the market are generally phenolic resin, fiber materials, filler materials and metal materials mainly composed of brass and red copper. The content of brass and red copper is relatively high. They have good thermal conductivity and high temperature friction stability. , heat decay, and wear resistance, but subject to laws and regulations in Europe and the United States, the use of copper is prohibited, and the development of formulas with a copper content of less than 5% has become an urgent issue for friction material manufacturers

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