Small-bundle carbon fiber pre-soaking method

Abstract

The invention relates to the field of carbon fiber pre-soaking, in particular to a small-bundle carbon fiber pre-soaking method. The method comprises the following steps that a small-bundle carbon fiber pre-soaking device is installed on a discharging opening of small-bundle carbon fiber; the small-bundle carbon fiber is wound around a cavity of the pre-soaking device, bundles penetrate through astoring groove of the pre-soaking device, and the carbon fiber is fixed to a traction machine; prepared resin is added into the storing groove, the resin impregnates the bundles, the bundles are pulled out through a roller drum and an extruding rubber roller, and pre-soaking of the small-bundle carbon fiber is completed. According to the method, the small-bundle carbon fiber pre-soaking device isadopted, the small-bundle carbon fiber pre-soaking device enables the small-bundle carbon fiber to be soaked in an injection structure, the carbon fiber is wound around multiple guide structures in anS shape, friction force between the guide structures and the small-bundle carbon fiber is increased, the small-bundle carbon fiber is limited, the situation that the small-bundle carbon fiber slidesoff from the guide structures is avoided, and thus the resin is smeared on the small-bundle carbon fiber more uniformly.

Description

technical field [0001] The invention relates to the field of carbon fiber impregnating materials, in particular to a small tow carbon fiber prepreg method. Background technique [0002] Carbon fiber is a high-strength and high-modulus fiber with a carbon content of more than 90%. Its high temperature resistance ranks first among all chemical fibers. It is made of acrylic fiber and viscose fiber, which is oxidized and carbonized at high temperature. It is the first choice for manufacturing aerospace and other high-tech equipment. Excellent material, small tow carbon fiber can be molded into various products after prepreg. 12K small tow [0003] For the 12K small tow carbon fiber prepreg process, the resin is easy to precipitate and the prepreg is not uniform. When the soaked prepreg is used, the carbon fiber is guided into the storage tank by the guide wheel and completely soaked in the storage tank. Prepreg is carried out in the resin inside. When the carbon fiber leaves t...

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Problems solved by technology

[0003] For the 12K small tow carbon fiber prepreg process, the resin is easy to precipitate and cause the prepreg to be uneven. When the soaked prepreg is used, the carbon fiber is guided into the storage tank by the guide wheel and completely soaked in the storage tank. Prepreg is carried out in the resin inside. When the carbon fiber leaves the storage tank, the resin content on the carbon fiber is the highest. As the carbon fiber tow travels, the oil will flow along the carbon fiber tow, and even break away from the carbon fiber tow, resulting in carbon fiber tow The resin in the axial direction is uneven, and the small tow carbon fiber is easy to slip off from the guide wheel during the guiding process, which affects the guiding quality

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