Method for surface modification on carbon fibers

Abstract

The invention belongs to the technical field of surface modification and relates to a method for surface modification on carbon fibers. The method is characterized in that a material containing a catechol structure is used as a surface modifier and the surface modifier is coated on surfaces of carbon fibers so that carbon fiber surface characteristics are improved. After surface modification on carbon fibers by the material containing the catechol structure, the carbon fibers can be further subjected to surface modification by other chemical materials according to demands. The method can be operated simply and conveniently, has obvious effects and realizes effective modification on a specific matrix by simple operation. Through simple operation, the carbon fibers can be subjected to hydrophilic modification and the surfaces of the carbon fibers have lipophilicity. Through use of a group or a substance having special a function, the carbon fibers have special functions of bacterium resistance and luminescence. The method has wide application prospects in the field of carbon-fiber composite materials and other functional materials.

Description

technical field [0001] The invention belongs to the technical field of surface modification, and relates to a method for surface modification of carbon fibers. The core is to use a substance containing catechol structure as a surface modifier, which is coated on the surface of carbon fibers under certain conditions, and then changes A method for carbon fiber surface characterization. After the surface modification is carried out by using the substance containing catechol structure, other chemical substances can be used to further carry out surface modification on the carbon fiber as required. The modification method has the characteristics of simple operation and remarkable effect, and can effectively modify a specific matrix through simple operation, and has broad application prospects in the fields of carbon fiber composite materials and the like. Background technique [0002] As a high-performance fiber, carbon fiber has excellent performance mainly as follows: mechanica...

AI Technical Summary

Problems solved by technology

But these traditional surface treatment methods have obvious advantages and disadvantages

For example, chemical treatment methods can increase the active groups on the surface of carbon fibers, thereby enhancing the interaction with the matrix; but they often cause damage to carbon fibers and reduce their strength.

The physical sizing method can prevent the carbon fiber from fluffing and splitting during transportation and processing, and has no effect on its mechanical properties, and may even improve it; however, the sizing method often cannot make the carbon fiber form a strong chemical interaction with the matrix