摘要
使用4,4'-二氟代二苯甲酰与双酚A的溶液缩聚得聚醚苯偶酰(PEB),再用邻苯二胺及少量4,4'-二苯醚-1,2二胺(OBDA)对PEB改性,两步法合成得到3种新型聚苯基醚喹嗯啉(PEQs).实验表明这些PEQs聚合物能在多种常规有机溶剂中溶解(如DMF、THF等);采用四氢呋喃溶解PEQs,将其涂布成膜,发现该膜在可见光区具有良好的透光性(450 nm处的透光率高达85%);此外,它们还具有较高的玻璃化转变温度(Tg>210℃)、良好的热性能、优异的耐酸碱性和较好的力学性能,具有潜在应用前景.
Novel poly（aryl ether quinoxaline）s （PEQs） were prepared via a new two-step procedure.Firstly,poly （ether benzil） （PEB） was synthesized by the polycondensation of 4,4＇-difluorobenzil and 4,4＇-isopropylidenediphenol.Then,PEQs were synthesized through chemical modification of PEB by 1,2-diaminobenzene and a small amount of 4,4＇-oxydibenzene-1,2-diamine （OBDA）.The polymers were characterized by IR,NMR,TMA and other measurements.Experiments show that these PEQs can be dissolved in common organic solvents,such as DMF and THF; these PEQs were dissolved in THF to get films which had good transmittance in the visible region （the transmittance was up to 85% at 450 nm）.In addition,they also had higher glass transition temperatures （Tg〉210 ℃）,good thermal and mechanical properties,as well as excellent resistance to strong acid and alkali.They are expected to be useful functional materials.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第6期133-140,共8页
Journal of East China Normal University(Natural Science)
关键词
聚苯基醚喹(嗯)啉
材料性能
紫外老化
poly（aryl ether quinoxaline）
materical performance
ultraviolet aging
