Carbon fiber widening equipment and process

Abstract

The invention relates to carbon fiber widening equipment. The carbon fiber widening equipment comprises heating rollers, yarn spreading rollers and a widening roller assembly, wherein the heating rollers, the yarn spreading rollers and the widening roller assembly are arranged in sequence. Concave-convex particles are distributed on the peripheral surfaces of the yarn spreading rollers. The widening roller assembly comprises a widening positioning roller and a pressing wheel, the widening positioning roller is provided with a notch allowing carbon fibers to be spread by a set width, the pressing wheel is arranged in the notch in a pressing mode, and the carbon fibers pass through the space between the notch and the pressing wheel. A carbon fiber widening process includes the steps that the carbon fibers are heated to fuse a sizing agent on the surfaces of the carbon fibers; the heated carbon fibers pass through the yarn spreading rollers to be evenly spread; the spread carbon fibers pass through the space between the notch of the widening positioning roller and the pressing wheel to be spread by the width set by the notch. By means of the equipment and the process, ultrathin carbon fiber bundles can be obtained, and low-gram-weight knitted fabric or prepreg can be easily obtained; meanwhile, the equipment and the process facilitate online yarn spreading, and production efficiency is higher.

Description

technical field [0001] The invention relates to the field of high-performance fiber technology processing and production, in particular to a carbon fiber widening equipment and process. Background technique [0002] Carbon fiber is a high-performance fiber with the advantages of high strength and light specific gravity. It has a wide range of applications in aerospace, automotive, new energy, medical, and sporting goods industries. At present, carbon fiber needs to be woven or made into prepreg in the preparation of finished products. At present, carbon fiber is in the form of tow, and each tow contains monofilaments of several K, or even dozens of K (1K is 1 thousand), especially for large filaments. When weaving and producing prepregs, if the tows cannot be fully flattened, not only will the fabric be relatively thick, but the mechanical properties will deviate greatly, especially the laying performance is very poor, which will make the subsequent parts The quality is not...

AI Technical Summary

Problems solved by technology

At present, carbon fiber needs to be woven or made into prepreg in the preparation of finished products. At present, carbon fiber is in the form of tow, and each tow contains monofilaments of several K, or even dozens of K (1K is 1 thousand), especially for large filaments. When weaving and producing prepregs, if the tows cannot be fully flattened, not only will the fabric be relatively thick, but the mechanical properties will deviate greatly, especially the laying performance is very poor, which will make the subsequent parts The quality is not well guaranteed, and when making prepregs, the resin cannot fully penetrate the fibers, resulting in defects such as dry yarn and stripping, which seriously restricts the application of carbon fiber yarns in high-end fields

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