Prepreg and preparation method thereof as well as composite material and preparation method thereof
By forming a core-shell double resin coating structure on the surface of carbon fiber monofilaments, the problem of low interfacial bonding strength between high modulus carbon fiber and resin matrix is solved, improving the performance of composite materials and giving them self-healing capabilities.
CN121537786APending Publication Date: 2026-02-17ZHONGFU SHENYING (SHANGHAI) TECH CO LTD
Patent Information
- Application Number
- CN202512024818.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-17
AI Technical Summary
Technical Problem
The low interfacial bond strength between high-modulus carbon fibers and the resin matrix affects the overall performance of the composite material.
Method used
A core resin layer and a shell resin layer are coated on the surface of carbon fiber monofilaments to form a core-shell dual resin coating structure. Through the combination of dynamic covalent bonds and catalysts, the interfacial bonding strength is improved.
Benefits of technology
It improves the problem of insufficient interfacial bonding between carbon fiber and resin, enhances the strength and durability of composite materials, and has self-healing capabilities.
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Figure CN121537786A_ABST
Abstract
The invention provides a prepreg and a preparation method thereof, and a composite material and a preparation method thereof. The prepreg comprises a carbon fiber bundle, the carbon fiber bundle comprises a carbon fiber monofilament, the surface of the carbon fiber monofilament is coated with a core resin layer, and the surface of the side, away from the carbon fiber monofilament, of the core resin layer is coated with a shell resin layer; the mass ratio of the core resin layer to the shell resin layer is (0.5-1.8): 1. In the prepreg provided by the invention, a core-shell double-resin coating structure is formed on the surface of the carbon fiber monofilament, and performance gradient transition is constructed between the carbon fiber and the resin, so that the problem of insufficient interface bonding of the carbon fiber and the resin in the prepreg is fundamentally improved.
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Citation Information
Patent Citations
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