Carbon fiber surface coating method and coated carbon fiber prepared by carbon fiber surface coating method

• Main Authors: GAO WEI, YU JINPENG, ZHU ZHONGYIN, SHAN MEILE, GUO KANG, GOU GUOQING, ZHANG XI, CHEN JIA
• Format: Patent
• Language: Chinese; English
• Published: 15.12.2020
• Subjects: ALLOYS; APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a carbon fiber surface coating method and a coated carbon fiber prepared by the carbon fiber surface coating method. The method comprises carbon fiber pretreatment and carbonfiber coating, the carbon fiber pretreatment comprises the steps of degumming, coarsening, neutralizing and drying the carbon fiber in order, and the carbon fiber pretreatment also comprises the stepof carrying out heat treatment on the dried carbon fiber; the heat treatment is carried out in a closed environment filled with inert gas, the temperature of the heat treatment is 700 DEG C to 800 DEGC, and the heat treatment time is 1.5 hours to 5 hours; the carbon fiber coating comprises the following steps that a titanium nano coating is prepared on the surface of pretreated carbon fiber to obtain a titanium-plated carbon fiber, and a nickel-titanium alloy and a Fe3O4 nano particle composite coating is prepared on the surface of the titanium-plated carbon fiber; and the nickel-titanium alloy and the Fe3O4 nanopartic