Boron hybridized phthalonitrile based phenolic resin and preparation method and application thereof
Boron hybrid resin is prepared through the nucleophilic substitution reaction between nitrophthalonitrile and boron hybrid phenolic resin, which solves the problems of poor oxidation resistance and high curing temperature of phenolic resin, and realizes the preparation of high-performance composite materials. Suitable for ablative heat protection and refractory materials.
Patent Information
- Application Number
- CN201910251241.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2019-03-29
- Publication Date
- 2019-06-28
- Estimated Expiration
- 2039-03-29
AI Technical Summary
The antioxidant properties of phenolic resin are poor, and the release of small molecule by-products during the curing process results in high porosity, poor quality, and high curing temperature of composite materials, which limits its application scope.
Through the nucleophilic substitution reaction between boron hybridized thermoplastic phenolic resin and nitrophthalonitrile, an addition-curing boron hybridized phthalonitrile-based phenolic resin is prepared, and boron element is introduced to improve the antioxidant performance, and Reduce the curing temperature through thermal polymerization to avoid the release of small molecules.
It improves the oxidation resistance and thermal stability of the resin, reduces the curing temperature, improves the molding process performance, and enhances the high temperature resistance and ablation resistance of composite materials. It is suitable for ablation heat protection, refractory materials and other fields.