A method for preparing a bio-based polyaryletherketone emulsion

By treating the carbon fiber surface with bio-based polyaryletherketone emulsion, the problem of low bonding strength between carbon fiber and polyaryletherketone resin was solved, the mechanical properties of the composite material were improved, and an environmentally friendly and simple sizing treatment method was realized.

CN119083181BActive Publication Date: 2026-07-21CHANGCHUN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN UNIV OF TECH
Filing Date
2024-10-11
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing bonding strength between carbon fiber and polyetheretherketone resin is low, resulting in poor mechanical properties of the composite material. In addition, existing sizing agents have problems such as incompatibility with thermoplastic resins or limited hydrophilicity.

Method used

Bio-based polyaryletherketone emulsion is used as a sizing agent. By mixing bio-based polyaryletherketone resin with emulsifier, leveling agent, lubricant, defoamer, adhesive and antistatic agent under specific conditions to form a uniform solution, it is coated on the surface of carbon fiber to improve the interfacial bonding strength between carbon fiber and polyaryletherketone resin.

Benefits of technology

This sizing agent improves the interfacial bonding strength between carbon fiber and polyetheretherketone resin, enhances the mechanical properties of the composite material, and is environmentally friendly, easy to use, and has good prospects for industrialization.

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Abstract

The present application relates to a kind of bio-based polyaryletherketone synthesized by one-step method, and with this resin as the main sizing agent suitable for sizing agent etc. And prepare an emulsion, belong to interface coating technical field.The emulsion includes by weight ratio: bio-based polyaryletherketone resin 0.5-3 parts, emulsifier 0.2-5 parts, leveling agent 0.1-1 part, lubricant 0.1-1 part, defoaming agent 0.1-1 part, binder 0.1-2 parts, antistatic agent 0.2-1 part, deionized water 86-98.7 parts;Effectively solve the compatibility problem of interface coating and polyether ether ketone matrix resin, by introducing benzene ring and acetal ring structure in polymer molecular chain, reduce the regularity of polyaryletherketone molecular chain segment, give solvent and molecular contact space, so that the polyaryletherketone resin has excellent solubility.Simultaneously, the diffusion and physical entanglement between sizing agent and matrix resin can enhance the interfacial adhesion, ensure that sizing agent and polyaryletherketone matrix resin have excellent compatibility, and the sizing agent also has good thermal stability.These can further improve the interfacial adhesion between carbon fiber and resin.
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