期刊论文

Preparation and Performance Characterization of Poly( p-phenylene Isophthalamide)

中文

塑料工业

1005-5770

2018

46

7

18-21

10.3969/j.issn.1005-5770.2018.07.004

国家自然科学基金

本校为第一机构

采用界面缩聚法合成了聚间苯二甲酰对苯二胺(PPIA),研究了各反应条件对聚合物比浓对数黏度的影响,并通过红外、热重分析使聚合物的结构与热性能进行了表征和分析,同时对聚合物进行了溶解性实验。结果表明,聚合反应的温度对聚合物比浓对数黏度存在峰值,较佳的反应温度为15 ℃ ,提高搅拌速率有利于获得高黏度的产物,缚酸剂2-甲基吡啶的用量与单体对苯二胺用量的物质的量比应略超过2 : 1为佳,单体物质的量比的变化对聚合物的比浓对数黏度影响较小。当温度高于200 ℃时,PPIA才开始分解,在586 ℃时热失重率为48%,PPIA有望成为一种耐高温纤维。聚合物在常见的极性溶剂中溶解性较差,当极性溶剂中溶有无...

In this paper, poly（ p-phenylene isophthalamide） （PPIA） was synthesized by interfacial polycondensation. The effects of reaction conditions on the inherent viscosity of the polymer were investigated. The structure and thermal properties of the polymer was characterized and discussed. At the same. time, the polymer was conducted for solubility experiment. Results show that the polymerization reaction temperature has a peak value on the inherent viscosity of the polymer. The optimum reaction temperature is 15 ℃, and raising the stirring rate...