Processing technology of modified carbon fibers

Abstract

The invention discloses a processing technology of modified carbon fibers. The processing technology comprises the following steps of a, filament return and thread collection, wherein a protofilamentis selected, after splitting, a new filament and an old filament are connected with a heat-resistant fiber, and the mixture is erected on a thread collection plate; b, primary drying, wherein the thread collection plate and the protofilament are conveyed into a drying device for drying, and the moisture in the protofilament is removed; c, preoxidation; d, carbonization; e, electrolytic oxidation modification; f, soaking modification. The processing technology has the advantages that an electrolytic oxidation mode is adopted for modifying the surfaces of the carbon fibers, active functional groups are introduced into the surfaces of the carbon fibers, the carbon oxygen bonds of the surfaces of the carbon fibers are increased, the contact compactness of the carbon fibers and the surface of acomposite material in the compounding process is improved, and the increase and decrease shearing strength of the synthesized composite material is improved; the interface bonding force of a bondingface is improved, and accordingly the tensile strength and impact-resistance strength of the carbon fiber and resin base material composite material is improved.

Description

technical field [0001] The invention relates to the technical field of carbon fiber production, in particular to a processing technology for modified carbon fiber. Background technique [0002] Carbon fiber is a new fibrous material with high temperature resistance, friction resistance, electrical conductivity, thermal conductivity and corrosion resistance. It can be processed into fabrics or combined with organic materials to form composite materials with excellent performance. In the prior art, carbon fiber is often used as a reinforcing material to be compounded with resin, metal, ceramics and carbon, etc., and processed into a high-strength composite material. Among them, the specific strength and specific modulus of carbon fiber reinforced epoxy resin composite materials are the most important in existing projects. The highest in the material. Due to the smooth surface of carbon fiber, after the reinforcement material is compounded, it often cannot be in close contact ...

AI Technical Summary

Problems solved by technology

Due to the smooth surface of carbon fiber, after the reinforcement material is compounded, it often cannot be in close contact with the composite material, resulting in poor performance of the composite material after synthesis.