含苯并咪唑酮结构双酚A型聚芳醚酮共聚物的制备和表征  

Preparation and Characterization of Poly(aryl ether ketone)Containing Bisphenol A and Benzimidazolone

作　　者：王志鹏[1,2] 王菲菲[1,2] 王红华[1] 周光远[1] 

机构地区：[1]中国科学院长春应用化学研究所,中国科学院生态环境高分子材料重点实验室,长春130022 [2]中国科学院大学,北京100049

出　　处：《应用化学》2015年第5期504-509,共6页Chinese Journal of Applied Chemistry

基　　金：吉林省科技发展计划基金(20130204029GX)资助项目~~

摘　　要：通过双酚A-4,4'-二氟二苯甲酮-苯并咪唑酮(BPA-DFK-HBI)无规共聚得到一系列聚芳醚酮共聚物。采用亲核缩聚和C—N偶联缩聚的方法,获得了高相对分子质量聚合物。通过红外、核磁等技术手段表征了聚合物的结构,DSC、TGA分析了聚合物的热性能。结果表明,随着苯并咪唑酮加入量的增大,共聚物对DMF、NMP等极性溶剂的耐溶剂性能得到提升,热稳定性增强,玻璃化转变温度(Tg)也明显提高,Tg最高可达236℃。当苯并咪唑酮与双酚A的摩尔比大于7∶3时,溶解性降低,反应出现前期沉淀,难以得到高相对分子质量的聚合物。A series of random copolymers of poly （aryl ether ketone） was prepared by copolymerization of bisphenol A, 4,4＇-difluorobenzophenone and benzimidazolone（BPA-DFK-HBI）. High relative molecular mass copolymers were prepared via the nucleophilic polycondensation and C--N coupling polyeondensation. The structure of the copolymers was characterized by FTIR and 1H NMR. The heat resistant properties of the copolymers were studied by DSC and TGA. As the feed ratio of benzimidazolone and bisphenol A increases, the solvent resistance properties of eopolymers are improved in polar solvents such as DMF and THF. The thermal stability is enhanced, and the Ts is significantly increased to as high as 236℃. It is difficult to obtain high relative molecular mass polymer when the molar ratio of benzimidazolone and bisphenol A is higher than 7：3 because precipitation occurs in the early stage of the reaction due to the poor solubility of copolymers.

关 键 词：聚芳醚酮 苯并咪唑酮 双酚A 共聚物 特种工程塑料 

分 类 号：O633.5[理学—高分子化学]