Dispersion of polyacrylate in epoxy resin and preparation method and application thereof
The polyacrylate dispersion is prepared by dispersing polymerization method using macromolecular RAFT reagent in epoxy resin, which solves the problems of high viscosity and difficulty in mixing of existing epoxy resin toughening agents, and achieves the effect of efficient toughening and convenient construction.
CN115651361BActive Publication Date: 2025-04-29TIANJIN UNIV
Patent Information
- Application Number
- CN202211323360.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-10-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2042-10-27
AI Technical Summary
Technical Problem
The existing epoxy resin toughening agents have problems such as high viscosity, difficulty in mixing and poor performance reproducibility, which affects their application in composite materials.
Method used
The polyacrylate dispersion is directly prepared in liquid epoxy resin by dispersion polymerization to control particle size and surface structure, and improve the stability and viscosity of the dispersion.
Benefits of technology
The dispersion has high solids content, good stability, low viscosity and easy construction properties, which significantly improves the toughening effect and application convenience of epoxy resin.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
The invention belongs to the technical field of dispersions in epoxy resins, discloses a dispersion of polyacrylate in epoxy resins and its preparation method and application, with macromolecular RAFT agent as dispersant, epoxy resin as dispersion medium, acrylate monomers in epoxy resins are directly prepared by dispersion polymerization of polyacrylate in epoxy medium (labeled as DPA-EP), and the results show that the dispersion has the advantages of high dispersed particle content (also referred to as solid content), good dispersion stability, low viscosity, and easy regulation of particle size and particle surface chemical composition. The dispersion is used for toughening of epoxy resins, with convenient mixing, low system viscosity, easy construction, obvious toughening effect, and little influence on the heat resistance and modulus of epoxy cured products. It can be applied to various epoxy resins and curing systems.
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Citation Information
Patent Citations
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