Carbon fiber reinforced polypropylene composite material and preparation method thereof

By using ionic liquids as compatibilizers in carbon fiber reinforced polypropylene composites, the problem of poor compatibility between polypropylene and carbon fiber was solved, thereby improving the material's impact resistance and mechanical properties.

CN122188279APending Publication Date: 2026-06-12CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202411828614.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In existing technologies, polypropylene and carbon fiber have poor compatibility, traditional compatibilizers are not very effective, and carbon fiber modification methods are cumbersome, making it difficult to effectively improve the performance of composite materials.

Method used

A carbon fiber reinforced polypropylene composite material was prepared by using an ionic liquid as a compatibilizer and mixing it with polypropylene, carbon fiber and an initiator in a twin-screw extruder. The ionic liquid was selected from imidazole ionic liquids to improve the compatibility between carbon fiber and polypropylene and enhance the impact resistance of the material.

Benefits of technology

It improves the impact resistance, tensile strength and flexural modulus of carbon fiber reinforced polypropylene composites, thus enhancing the overall performance of the material.

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Abstract

The invention relates to the technical field of carbon fiber reinforced polypropylene composite materials and discloses a carbon fiber reinforced polypropylene composite material and a preparation method thereof.The carbon fiber reinforced polypropylene composite material is prepared from, by weight, 100 parts of polypropylene, 20-30 parts of carbon fibers, 20-30 parts of compatilizer and 20-30 parts of initiator. The use amount of the carbon fiber is 3-35 parts by weight, the use amount of the compatilizer is 1-15 parts by weight, and the use amount of the initiator is 0.05-0.75 part by weight; wherein the compatilizer comprises an ionic liquid, and the ionic liquid is selected from one or more of imidazolium ionic liquid, imidazole positive ions and negative ions. The compatilizer adopted by the invention can enable the carbon fiber and the polypropylene to be well compatible, and the compatilizer has a toughening effect, so that the impact resistance, the tensile strength and the bending modulus of the carbon fiber reinforced polypropylene composite material can be improved.
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