有机-无机同步聚合法制备水溶性酚醛树脂/SiO2杂化材料及其应用

摘要

The water soluble phenolic resin/SiO_2 hybrid materials are prepared by organic-inorganic copolymerization technique that the polymerization of phenolic resin monomers and the hydrolysis polycondensation reaction of tetraethyl orthosilicate process at the same time. FTIR and SEM analyses indicate that SiO_2 particles and phenolic resin matrix form organic-inorganic interpenetrating network, and there are strong combinations between organic-inorganic phases. DSC is applied to study the curing behavior of hybrid materials. TGA analysis indicates that the thermal stability of hybrid materials is improved after adding SiO_2 particles into phenolic resin matrix.%采用有机-无机同步聚合法使酚醛树脂(PF)的单体聚合和正硅酸乙酯(TEOS)的水解缩合反应同步进行制备了水溶性PF/SiO_2杂化材料.红外光谱分析和扫描电镜分析表明,在有机-无机同步聚合过程中,SiO_2粒子与PF基体间形成有机、无机互穿网络结构,并且实现了有机、无机两相间的强界面结合.采用差示扫描量热仪对杂化材料的固化行为进行了研究.热失重分析表明,杂化材料的耐热性能明显提高,大大拓宽了其应用范围.