A POSS-pu modified epoxy emulsion type sizing agent and a preparation method and application thereof
By introducing a POSS-PU structure onto the carbon fiber surface, the problem that existing sizing agents cannot improve the toughness of carbon fiber reinforced epoxy resin composites is solved, and a significant improvement in interfacial bonding strength and impact resistance is achieved.
CN122128912APending Publication Date: 2026-06-02西安西电电工材料有限责任公司 +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 西安西电电工材料有限责任公司
- Filing Date
- 2026-04-08
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing sizing agents cannot effectively improve the toughness of carbon fiber reinforced epoxy resin composites.
Method used
A POSS-PU modified epoxy emulsion sizing agent is used. By introducing a POSS-PU structure onto the carbon fiber surface, the rigid structure of POSS and the flexible segments of PU work synergistically to improve interfacial bonding and mechanical properties.
Benefits of technology
It significantly improves the interfacial bonding strength and impact resistance of carbon fiber reinforced epoxy resin composites, and enhances the strength and toughness of the material.
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Smart Images
Figure CN122128912A_ABST
Abstract
This invention belongs to the technical field of interface modifiers for carbon fiber reinforced epoxy resin composites, and relates to a POSS-PU modified epoxy emulsion sizing agent, its preparation method, and its application. The method includes: ultrasonically dispersing octaaminopropyl cage-like polysilsesquioxane in butanone; mixing the POSS dispersion with a monomer having diisocyanate groups; modifying the POSS with isocyanate groups, and naming the product POSS-NCO; mixing dehydrated polytetrahydrofuran, POSS-NCO, and the monomer having diisocyanate groups, and adding them to anhydrous butanone to prepare POSS in-situ polymerized polyurethane; uniformly mixing the POSS in-situ polymerized polyurethane and bisphenol A type epoxy resin, adding an emulsifier, and repeatedly homogenizing and emulsifying to prepare the POSS-PU modified epoxy emulsion sizing agent. This solves the problem that existing sizing agents cannot improve the toughness of carbon fiber reinforced epoxy resin composites.
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