有机多羧酸纳米填料增强增韧聚苯并咪唑的研究  

Study on Strengthening and Toughening of Polybenzimidazole with Organic Polycarboxylic Acid Nanofillers

作　　者：郜远鹏 王彦[1] 胡祖明[1] 于俊荣[1] 诸静[1] Gao Yuanpeng;Wang Yan;Hu Zuming;Yu Junrong;Zhu Jing(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院纤维材料改性重点实验室,上海201620

出　　处：《山东化工》2023年第5期1-4,10,共5页Shandong Chemical Industry

基　　金：国家重点研发计划项目(2021YFB3700101)。

摘　　要：运用可逆的非共价作用,在芳醚型聚苯并咪唑(OPBI)溶液中掺入含有羧基官能团的芳香族多羧酸小分子,使用溶液自组装的方法构建高性能聚合物超分子交联网络,然后制备致密薄膜用于研究超分子交联对OPBI机械性能的影响。结果发现制备的交联膜最高断裂伸长率达到160%,断裂强度达到145 MPa,这分别是OPBI膜的2.6倍和2倍;除此之外交联膜的热稳定性没有受到影响,玻璃化转变温度还略有提高。同时交联膜具备一定的耐溶剂性,在一定程度上也表现出良好的回收性能。Aromatic polycarboxylic acid nanoparticles were incorporated into polybenzimidazole(OPBI)solution to construct a high-performance polymer supramolecular cross-linked network using a solution self-assembly method and reversible non-covalent interaction,then dense films were prepared to investigate the effect of cross-linking on the mechanical properties of OPBI.It was found that the maximum elongation at break of the prepared cross-linked films reached 160%with a breaking strength of 145 MPa,which was 2.6 and 2 times higher than that of OPBI films,respectively;in addition,the thermal stability of the cross-linked films was not weakened and the glass transition temperature was slightly increased.The cross-linked film also has characteristic like solvent resistance and recycling performance.

关 键 词：非共价作用 超分子交联网络 增强增韧 可回收 

分 类 号：TQ342.734[化学工程—化纤工业]