Impregnation method for manufacturing carbon fiber hard composite felt

Abstract

The invention discloses an impregnation method for manufacturing carbon fiber hard composite felt. The method comprises the following steps: preparing an impregnating agent, completely soaking a carbon fiber soft felt into the impregnating agent, and drying the impregnated carbon fiber soft felt by an industrial spin-drying machine. According to the method provided by the invention, the carbon fiber soft felt is completely soaked by the appropriate impregnating agent, so that resin can fully penetrate into the soft felt, and the overall strength and mechanical processing performance of a finished product are obviously improved. According to the carbon fiber hard composite felt prepared by adopting the process, resin in large pores is thrown out by the spin-drying machine, and the resin only adheres to carbon fiber filaments and in small pores, so that the density of the finished product is uniform. The process provided by the invention is very simple, the product quality can be obviously improved by skillfully combining resin solution impregnation and a spin-drying process, and after spin-drying with the industrial spin-drying machine, excess resin can be recycled, and the cost canbe effectively reduced.

Description

technical field [0001] The invention relates to a method for making a carbon fiber rigid composite felt, in particular to an impregnation method for making a carbon fiber rigid composite felt. Background technique [0002] In the production process of carbon fiber rigid composite felt, it is necessary to impregnate the impregnating agent on the carbon fiber soft felt, and the impregnating agent is heated and hardened, so that the carbon fiber soft felt is transformed into a carbon fiber hard felt. The impregnation method currently used to make carbon fiber rigid composite felt is generally carried out by spray gun spraying or manual brushing. When using a spray gun to spray, not only the working environment is poor, but also due to the high viscosity of the impregnating agent, the spray gun is easily blocked, and the work efficiency is not high; when using manual brushing, not only the labor intensity is high, but also due to the different proficiency of the workers, the bru...

AI Technical Summary

Problems solved by technology

When using a spray gun to spray, not only the working environment is poor, but also due to the high viscosity of the impregnating agent, the spray gun is easily blocked, and the work efficiency is not high; when using manual brushing, not only the labor intensity is high, but also due to the different proficiency of the workers, the brushing cannot be guaranteed. Apply evenly

In addition, for the soft felt impregnated by the above method, most of the impregnating agents only exist on the surface of the soft felt, resulting in the final hard felt composite felt product with uneven density, different hardness and softness, and poor processing performance.