Manufacturing method of carbon/silicon carbide brake material

Abstract

The invention relates to a method for manufacturing a carbon / silicon carbide brake material, in particular to a method for manufacturing a low-cost chopped carbon fiber reinforced silicon carbide brake material. The method comprises: preparing phenolic resin solution, preparing carbon fiber prepreg, cutting the prepreg, forming by warm pressing, pyrolysis carbonization, and impregnating with reaction melt. Under the premise of not preparing the interface phase, the method ensures the excellent comprehensive mechanical properties of the composite material by controlling the process and designing the microstructure of the composite material, and the process is simple, the preparation cycle is short, the repeatability is good, and the cost is low. low. The carbon / silicon carbide brake material manufactured by the invention has a high and stable friction coefficient, a small wear rate, excellent friction performance, excellent mechanical properties and oxidation resistance, and can meet the requirements of high-energy load fields such as aircraft and tanks for brake materials. .

Description

Manufacturing method of carbon / silicon carbide brake material technical field The present invention relates to a kind of manufacture method of carbon / silicon carbide brake material, particularly relate to a kind of low-cost chopped carbon The invention discloses a manufacturing method of a fiber-reinforced silicon carbide brake material. Background technique C / SiC ceramic matrix composite material is as a kind of novel braking material, and traditional metal and semi-metallic braking material Compared with it, it has outstanding advantages such as low density, stable friction coefficient, small wear, large braking ratio and long service life. It is used in aircraft, It has a wide range of applications in high-energy load braking fields such as tanks. Compared with C / C composites, C / SiC composites have excellent Excellent anti-oxidation performance and high and stable friction coefficient and other outstanding advantages, thus significantly increasing the operating t...

AI Technical Summary

Problems solved by technology

The obvious weak point that CVI technology exists is: (1) manufacturing cost

Evaporation of water can lead to unstable friction properties

(3) Serious environmental pollution

The main disadvantages of the solution are: (1) There are obvious structural defects inside the material

(2) The process cost is higher

(3) It is difficult to obtain high-purity and stoichiometric ceramic substrates

reaction, but at the same time increases the preparation cycle and cost of composite materials