A gradient interpenetrating network type polyether ether ketone-based carbon fiber sizing agent, a preparation method and application thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU ZHONGFU SHENYING CARBON FIBER ENG CENT CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
The interfacial compatibility of carbon fiber and polyether ether ketone (PEEK) composites is poor. Existing sizing agents are prone to decomposition at high temperatures, resulting in weak interfacial bonding and limiting the performance of the composites.
A gradient interpenetrating network type polyether ether ketone-based carbon fiber sizing agent is adopted. Through the triple chemical interaction of covalent bonds, π-π stacking and hydrogen bonds, combined with the gradient interpenetrating network structure, a strong interfacial bond between carbon fiber and PEEK is achieved. The sizing system consists of sulfonated polyether ether ketone (SPEEK), amino-terminated polyether ether ketone (PEEK-NH2) and a naphthalene ring aromatic coupling agent.
It improves the mechanical properties and interfacial compatibility of composite materials, has better heat resistance than existing technologies, is compatible with high-temperature molding processes of PEEK, has no decomposition failure, significantly improves the wettability of PEEK melt on carbon fibers, and reduces interfacial voids and defects.
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