【作者】 张效亮； 周承俊； 刘子涛； 庄启昕； 韩哲文；

【Author】 Zhang Xiaoliang,Zhou Chengjun, Liu Zitao,Zhuang Qixin,Han Zhewen (Department of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237)

【机构】 华东理工大学材料科学与工程学院；

【摘要】 <正>PBO纤维具有高强高模及优异的热氧稳定等性能,成为目前综合性能最为优异的高性能高分子纤维,在国防军事、航空航天等高科技领域具有广阔的应用前景。PBO的聚合反应是一种非均相逐步缩聚反应,由于聚合后期体系粘度很高,一般将其分为聚合釜中预聚合和螺杆挤出机后聚合两部分。预聚合(110～160℃)主要是对苯二甲酸(TA)逐步溶解到多聚磷酸 (PPA)中并与4,6-二氨基间苯二酚盐酸盐(DADHB)形成齐聚物。聚合反应动力学的研究能更多还原

【Abstract】 The prepolymerization kinetics of PBO was studied by the measurement of intrinsic viscosity number of PBO sample. The results show that with the increasing of temperature and time of the polymerization, the molecular weight of PBO polymer is turning high. The data of the reactivity activation energy is also obtained. It is assumed that during the polymerization process, the dissolution of TA and the diffusion of the macromolecules in PPA are relatively slow, which leads to the results that the rate of polymerization is not too fast.更多还原