摘要
合成了两种带有苯炔或萘炔结构及苯基硅亚甲基的聚合物PSPE和PSNE,研究了它们的熔点,溶解性及固化反应。研究结果表明,硅亚甲基的引入可以降低聚合物的熔点,增加溶解性,而苯炔和乙炔基间的D iels-A lder反应,可使聚合物固化后,生成刚性苯并结构。这一原理可用于加工性能良好的新型耐高温聚合物的分子设计和合成,也可用于对现有耐高温聚合物的改性。
Two polymers containing phenyleneethynylene or 2,7-diethynylenenaphthalene and phenylsilylene in their main chain were synthesized. The influences of phenylsilylene on the melting point and solubility of the polymers as well as their curing reactions were studied. The results show that the introduction of phenylsilylene can reduce the melting point and increase the solubility of the polymer and the Diels-Alder reaction between -ph-C = C- and -C = C- can produce rigid fused benzene rings in the polymer after curing. This principle can be used to synthesize novel highly heat-resistant polymer with good processability or be used to modify highly heat-resistant polymer such as polyimide.
出处
《航空材料学报》
EI
CAS
CSCD
2006年第1期36-39,共4页
Journal of Aeronautical Materials
基金
航空基金资助项目(01451011)
