一种高耐热酚醛树脂及其制备方法
By pre-modifying phenol and using melamine and formaldehyde to form a modified phenol intermediate, a high cross-linking density benzene ring-triazine ring synergistic network structure is constructed, which solves the problems of thermal stability and insufficient cross-linking network of phenolic resin under high temperature and high load conditions, and achieves a significant improvement in the high temperature stability and ablation resistance of the material.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHU SOUTHEAST PLASTIC CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing phenolic resins lack sufficient thermal stability and cross-linked network structure under high temperature and high load conditions, resulting in poor stability and ablation resistance of the materials during long-term service.
By pre-modifying phenol, a modified phenol intermediate is formed by melamine and formaldehyde. Subsequently, the intermediate is polycondensed under acid catalysis and subjected to depressurized devolatilization to construct a three-dimensional network structure with high cross-linking density of benzene ring-triazine ring synergy.
It significantly improved the thermal decomposition temperature, glass transition temperature, char residue, and mechanical strength of phenolic resin, and enhanced the stability and ablation resistance of the material under high temperature and high load conditions.
Smart Images
Figure CN122145739B_ABST