A kind of small tow carbon fiber prepreg method

Abstract

The present invention relates to the field of carbon fiber prepregs, in particular to a small tow carbon fiber prepreg method, the method comprising the following steps: installing a small tow carbon fiber prepreg device on a small tow carbon fiber discharge port; The small tow carbon fiber is wound in the cavity of the prepreg device, and the tow runs through the storage tank of the prepreg device, and the carbon fiber is fixed on the tractor; the prepared resin is added to the inside of the storage tank, and the resin impregnated filament The small tow carbon fiber prepreg is pulled out through rollers and extrusion rubber rollers to complete the small tow carbon fiber prepreg device. The small tow carbon fiber prepreg device makes the small tow carbon fiber prepreg After the carbon fiber is soaked into the prepreg from the inside of the injection structure, it is wound on multiple guide structures in an S shape, which increases the friction between the guide structure and the small tow carbon fiber, and limits the small tow carbon fiber. It avoids slipping of the small tow carbon fiber and the guide structure, so that the resin is more evenly applied to the small tow carbon fiber.

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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