CATALYST FOR THERMAL DEGRADATION OF CARBON-FIBER-AND-RESIN-BASED COMPOSITE MATERIAL AND APPLICATION METHOD THEREFOR

摘要

Provided are a catalyst for the thermal degradation of a carbon-fiber-and-resin-based composite material and an application method therefor. The present invention relates to the technical field of the recovery of carbon fibers, and has a high recovery efficiency and a low cost, and the mechanical strength of recovered carbon fibers is also maintained, which can provide support for the circular economy of carbon-fiber-and-resin-based composite materials. The catalyst comprises a first component, a second component and a third component, wherein the first component is potassium chloride or sodium chloride, the second component is zinc chloride or ferric chloride, and the third component is titanium dioxide or silicon oxide; and the mass ratio of the first component, the second component and the third component is 1:0.5:0.5 to 1:2:2. During use, a carbon-fiber-and-resin-based composite material is cut and placed in the catalyst in a molten state, a reaction is carried out for 10 to 30 min at a temperature maintained at 300°C to 500°C, and same is taken out for ultrasonic washing. The technical solution provided in the present invention is applicable to the process of the recovery of carbon fibers.