Carbon fiber reinforced thermoplastic resin unidirectional prepreg and method for producing the same

By using a V-shaped roller assembly to calender and flatten carbon fibers, the problem of uneven wetting of thermoplastic resin in carbon fiber bundles was solved, the appearance quality and thickness uniformity of the prepreg were improved, and the processing performance of the material was enhanced.

CN122232079APending Publication Date: 2026-06-19CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-18
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In the prior art, it is difficult for thermoplastic resin to uniformly impregnate carbon fiber bundles, resulting in problems such as high porosity, uneven surface, and uneven thickness in the prepreg of carbon fiber reinforced thermoplastic resin composites, which affect the quality of the material and subsequent processing applications.

⚗Method used

A V-shaped roll assembly is used to calender and flatten sheet-like carbon fibers made of unidirectional prepreg thermoplastic resin. By adjusting parameters such as the angle, distance, and temperature of the rolls, the wettability between the resin and the carbon fibers is optimized, the porosity is reduced, and the appearance quality is improved.

🎯Benefits of technology

This resulted in a smoother surface and more uniform thickness in carbon fiber reinforced thermoplastic resin unidirectional prepregs, improving the processing performance for subsequent applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of composite materials, specifically to a carbon fiber reinforced thermoplastic resin unidirectional prepreg and its preparation method. The method includes: calendering and flattening sheet-like carbon fibers of the unidirectional prepreg thermoplastic resin sequentially through a V-shaped roll group consisting of a first roll, a second roll, and a third roll; the axes of the first and third rolls are parallel and on the same horizontal plane; a second roll is located between the first and third rolls, but is not on the same horizontal plane as the first and third rolls. The preparation method of this invention can reduce the porosity of the prepreg, improve its apparent quality, resulting in a smoother surface, more uniform thickness, and improved processing performance in subsequent applications.
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