Aqueous composite sizing agent, method for producing the same, method for surface treatment of reinforcing fibers, and composite material
By utilizing a water-based composite sizing agent preparation method, bisphenol E cyanate prepolymer and nanoparticles are covalently bonded and mechanically interlocked, solving the problems of insufficient heat resistance and environmental pollution of existing sizing agents and improving the performance of composite materials.
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
- 2026-05-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sizing agents have insufficient heat resistance, making it difficult to match high-performance resin matrices and causing serious environmental pollution. Traditional sizing agents have high viscosity and are brittle, resulting in limited improvement in the interlaminar shear strength of composite materials.
An aqueous composite sizing agent containing bisphenol E cyanate prepolymer, polyethersulfone, inorganic nanoparticles, nonionic emulsifier, and anionic emulsifier is used to prepare an O/W type emulsion via a reverse emulsification method. This emulsion is then used to treat the surface of the reinforcing fiber, forming an interfacial reinforcement mechanism involving covalent bonding and mechanical interlocking.
It improves the heat resistance and interlaminar shear strength of composite materials, enhances interfacial bonding, reduces environmental pollution, and meets the matching requirements of high-performance resin matrices.
Smart Images
Figure CN122406532A_ABST