A new type of recycled carbon fiber felt reinforcement and its preparation method

Abstract

The invention relates to a novel regenerated carbon fiber felt reinforcement body and a preparation method thereof. The preparation method comprises the following steps that 1, a surfactant, an antifoaming agent and hydroxyethyl cellulose are prepared into a felt making solution; 2, regenerated carbon fiber is cut into short carbon fiber uniform in length; 3, the prepared felt making solution is poured into a cylindrical container, then the container is put into an inner-layer screen, the cut regenerated carbon fiber is put in the screen and is dispersed by using a stirrer, and stirring is performed for felt making; 4, the screen is taken out and is put into a drying oven for drying, a carbon fiber felt on a screen wall is taken out and is put in a drying oven, drying is performed at high temperature, and the novel regenerated carbon fiber felt reinforcement body can be obtained after drying. Compared with the prior art, the problems of difficult formation and poor uniformity in the regenerated carbon fiber felt making process are solved according to characteristics of the regenerated carbon fiber, a making technology and the process are simple, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a carbon fiber felt reinforcement used in the field of carbon fiber reinforced composite materials. Background technique [0002] Carbon fiber reinforced thermosetting resin and thermoplastic resin composite materials are increasingly replacing metal materials and are widely used in aircraft, automobiles, wind power generation and other fields. However, the biggest challenge facing carbon fiber composite materials is recycling. Separating, recycling and reusing carbon fibers in composite materials is of great significance to environmental protection, energy saving and emission reduction, and sustainable development. In order to make the carbon fiber have a better reinforcing effect in the resin matrix, long carbon fibers are usually used to reinforce the resin matrix. However, due to the recycling process, the recycled carbon fiber cannot obtain a uniform length, and ...

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Problems solved by technology

Current patents such as CN101591178A and CN103568385A use new carbon fibers, but new carbon fibers are expensive, resulting in higher cost of carbon fiber felts, which directly limits its wide application

Patents such as CN101948327A, CN1354292A, the felting method used needs to prepare intermediates first, and then solidify and shape, the process flow is complicated, and because the recycled carbon fiber has already been formed, the method is not applicable to the recycled carbon fiber felt