Carbon fiber reinforced polyester composite material with antibacterial function and preparation method thereof

CN122404928APending Publication Date: 2026-07-17GUANGZHOU TIANBA BEAUTY & HAIR PROD CO LTD
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Patent Information

Application Number
CN202610810265.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the effective exposure of antibacterial functional components on the surface of carbon fiber reinforced polyester composites is limited, and it is difficult to balance the loading of zinc oxide nanostructures with melt composite processing stability, which affects fiber length and processing stability.

Method used

By coating a polydopamine layer onto the surface of polyacrylonitrile-based carbon fibers and loading zinc oxide nanostructures, the accessibility of antibacterial functional components on the surface of molded parts is ensured through synergistic matching of polydopamine layer thickness and zinc oxide nanostructure loading, while maintaining fiber length and processing stability during melt composite process.

Benefits of technology

It achieved an antibacterial rate of no less than 90% against Staphylococcus aureus and Escherichia coli under 24-hour contact conditions, while maintaining the fiber length within a controllable range of 0.15-1.20 mm, ensuring the stability of the material during processing and the stable expression of its antibacterial function.

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Abstract

The present application relates to the field of material chemistry composite materials, and provides a carbon fiber reinforced polyester composite material with antibacterial function and a preparation method thereof, wherein modified polyacrylonitrile-based carbon fibers with a surface coated with a polydopamine layer and loaded with zinc oxide nanostructures on the surface are melt compounded with polybutylene terephthalate at 18-40 wt% and injection molded; the antibacterial rate of the product to Staphylococcus aureus ATCC6538 and Escherichia coli ATCC25922 under 24 h contact conditions according to GB / T 31402-2023 is not less than 90%, and the retained fiber length in the injection molded product is 0.15-1.20 mm; the problem that reinforcement, antibacterial property and melt processing stability are difficult to be considered simultaneously is solved, and the present application is suitable for the preparation of antibacterial structural parts.
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Citation Information

Patent Citations

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