Preparation method for thermal insulation material wet-molded from short-cut carbon fiber

Abstract

Provided is a thermal insulation material wet molded from short-cut carbon fiber. The thermal insulation material is prepared from the following steps: (1) ingredients: mixing by proportions evenly the short-cut carbon fiber, resin, and dispersant, to obtain the mixture; (2) molding: obtaining the molded, half moist mixture; (3) solidifying: placing the treated mixture from step (2) and the mould into a curing oven to solidify; (4) mold releasing: mold releasing the treated mixture from step (3); (5) carbonizing: carbonizing the treated mixture from step (4):(6) high-temperature purifying: purifying under high temperature the treated mixture from step (5), cooling with the oven to obtain the finished product. The thermal insulation material prepared from present method, has low heat conductivity coefficient and good thermal insulation function. The production cost is low, the preparation process is short, and the material recovery rate is high. The carbon fiber and side wastes of carbon fiber product can be recycled and used, while solving environmental problems economic benefits can be seen.

Description

technical field [0001] The invention relates to a method for preparing thermal insulation materials, in particular to a method for preparing thermal insulation materials by wet forming of chopped carbon fibers. Background technique [0002] Carbon felt is a felt-like carbonaceous material composed of carbon fibers. Carbon felt not only has the characteristics of high temperature resistance, corrosion resistance, and non-melting of general block carbon materials, but also has the properties of softness, elasticity, small volume density, and small thermal conductivity of fibrous carbon. It is an excellent thermal insulation material. Insulation materials. At present, carbon felt is widely used in the insulation components of high-temperature furnaces, high-temperature induction furnaces and vacuum coating furnaces in vacuum or non-oxidizing atmospheres. [0003] The thickness of ordinary soft carbon felt is 5-10mm. In order to make the carbon felt reach the required thicknes...

AI Technical Summary

Problems solved by technology

[0005] At present, carbon-carbon insulation materials mostly use long fibers such as carbon felt, carbon cloth, and three-dimensional braids as the matrix. The prepared carbon-carbon insulation materials are anisotropic, with high preparation costs, high thermal conductivity, and poor insulation performance.