Treatment method for surface of carbon fiber resin-based composite material

Abstract

The invention discloses a treatment method for the surface of a carbon fiber resin-based composite material. The treatment method comprises the following steps that S1, the carbon fiber resin-based composite material is roughly ground and polished by using sandpaper with the mesh number of 200-799; S2, the surface of the carbon fiber resin-based composite material is finely ground and polished for1-n times by using sandpaper with the mesh number of 800-6999 until the surface roughness Ra is less than or equal to 0.8 micron, the sandpaper is replaced each time, the mesh number of the sandpaperis increased, and first angles of the sandpaper polishing direction are changed to remove the last polished traces; and S3, the surface of the carbon fiber resin-based composite material is finely ground and polished for 1-m times by using sandpaper with the mesh number of 7000 or more, the sandpaper is replaced each time, the mesh number of the sandpaper is increased, and second angles of the sandpaper polishing direction are changed to remove the last polished traces. According to the treatment method, the micro defects on the surface of the composite material can be treated under the condition that the carbon fibers are not damaged, so that the resin content of the composite material is reduced, and the surface beauty and the reprocessing effect of the composite material are improved;and the operation is simple, the cost is low, and the time consumption is short.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a surface treatment method of a carbon fiber resin-based composite material. Background technique [0002] Due to its high strength, high modulus, anti-aging, good fatigue resistance and strong designability, carbon fiber resin-based composite materials have been widely used in aerospace, wind power generation, automobile industry, sports equipment, construction and other fields. Most of these products require smooth and beautiful surfaces, so some corresponding surface treatments are also produced. Among them, the more common surface treatment processes are re-coating, surface coating and grinding, and surface coating and grinding. The process steps It is cumbersome, the operation process is long and time-consuming, so it is not suitable for mass production. [0003] Aiming at the surface treatment method of composite materials, the Chinese invention patent application ...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned process method has a certain effect on the appearance of carbon fiber composite materials, but the processing steps are cumbersome, the cost is high, the time required is long, the technical requirements are high, and it will cause air pollution. If it is processed well, it needs to be processed for the second time, which will easily cause damage to the carbon fiber and cause double loss of time and cost.

Images