A method and apparatus for thermal degradation of carbon fiber composites

By using ozone pretreatment and low-temperature pyrolysis, the problem of high energy consumption in existing thermal degradation technologies has been solved, enabling low-energy and high-efficiency recycling of carbon fiber composite materials, reducing carbon emissions and improving the efficiency of material reuse.

CN118976776BActive Publication Date: 2026-07-24INST OF COAL CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF COAL CHEM CHINESE ACAD OF SCI
Filing Date
2024-08-05
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing thermal degradation technologies are energy-intensive, leading to increased carbon emissions and making it difficult to efficiently recycle carbon fiber composites.

Method used

The chemical structure of carbon fiber composites is destroyed at low temperature by using an ozone pretreatment step, followed by pyrolysis in a vacuum or protective gas environment to reduce the pyrolysis temperature and time.

Benefits of technology

It reduces pyrolysis energy consumption, improves pyrolysis efficiency, reduces carbon emissions, and leaves abundant functional groups on the carbon fiber surface, thus improving the feasibility of reuse.

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Abstract

The application relates to a thermal degradation method and a thermal degradation device of carbon fiber composite materials, and relates to the technical field of carbon fiber composite materials. The main technical scheme is as follows: the thermal degradation method of the carbon fiber composite materials comprises the following steps: in an ozone environment, the carbon fiber composite materials are subjected to ozone pretreatment to destroy the chemical structure of the carbon fiber composite materials, and the fiber materials after ozone pretreatment are obtained; wherein the temperature of the ozone pretreatment is less than or equal to 100 DEG C; in a vacuum environment or a protective gas environment, the fiber materials after ozone pretreatment are subjected to pyrolysis treatment, and the fiber materials after pyrolysis treatment are obtained. The application is mainly used for reducing the thermal degradation energy consumption of the carbon fiber composite materials and indirectly reducing carbon emission.
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