摘要
以酮基双苯并咪唑和4,4'–二氟二苯甲酮为单体,通过亲核取代反应得到聚(N–芳基化聚苯并咪唑酮)。通过N–芳基化的方法把苯并咪唑和酮基引入到聚合物主链中,以期得到一类耐热性能优异的含酮基聚苯并咪唑。通过分子模拟方法对目标聚合物的分子链结构及其堆积状态进行了计算分析,其结构通过FT–IR、1H–NMR和元素分析表征。该聚合物由于具有较为刚性的分子骨架结构,故表现出优异的热性能和较高的玻璃化转变温度(T5%=501℃,Tg=279℃)。
The poly（N-arylene benzimidazole ketone） was prepared by nucleophilic substitution reaction using keto-bis（benzimidazole） and 4,4＇-difluorobenzophenone as monomers.The benzimidazole and keto group were introduced into the polymer main chain by N-arylation method in order to obtain a series of keto-containing poly（benzimidazole）s with excellent heat resistance performance.The molecular chain structure of the target polymer and its packing state were calculated and analyzed by using molecular simulation method,and its structure was characterized by using FT-IR,1H-NMR and element analysis.It is showed that the polymer possesses excellent thermal performance and higher glass transition temperature（T5%= 501 ℃,Tg= 279 ℃） because of its more rigid molecular skeleton structure.
出处
《化学推进剂与高分子材料》
CAS
2014年第3期44-46,68,共4页
Chemical Propellants & Polymeric Materials
基金
中国工程物理研究院科学技术发展基金(2012A0302015
2012B0302051)
关键词
聚(N–芳基化苯并咪唑酮)
亲核取代
热性能
poly（N-arylene benzimidazole ketone）
nucleophilic substitution
thermal performance
