PPTA浆粕的正交实验优化与耐热性能研究  

Study on the Preparation of PPTA Pulp and Heat-Resistant Properties

作　　者：付嘉豪 邓峰 郭晓雪 刘吉平[2] FU Jiahao;DENG Feng;GUO Xiaoxue;LIU Jiping(High school affiliated to BIT,Beijing 100081,China;Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学附属中学,北京100081 [2]北京理工大学,北京100081

出　　处：《兵器装备工程学报》2018年第3期197-200,共4页Journal of Ordnance Equipment Engineering

摘　　要：针对优化PPTA浆粕制备工艺及提高其热性能,提出了PPTA浆粕的正交优化实验与耐热性能研究。通过在简单溶剂体系N-甲基吡啶烷酮—氯化钙(NMP-CaCl_2)中,采用低温溶液直接缩聚法对制备PPTA浆粕的工艺条件进行正交优化,用TG及DSC表征了PPTA浆粕的耐高温性能,结果表明对苯二胺(PPDA)和对苯二甲酰氯(TPC)的摩尔配比为1,初始反应温度为-15℃,熟化温度为60℃,熟化时间为5 h为最佳制备工艺参数,分解温度可达540℃。这为制备高温材料提供了重要参考值。Aiming at the optimization of PPTA pulp preparation process and the improvement of thermal properties,the orthogonal experimental optimization and heat-resistant properties of PPTA pulp were proposed.PPTA pulp was preparated by direct polycondensation at the low temperature in NMP-CaCl 2 system.And it has been optimized by the orthogonal experiment.The result shows that the optimal parameters were the molar ratio of two monomers of 1,the initial reactor temperature-15℃,the curing temperature of 60℃,the curing time of 5 h.Through the TG and DSC test,get it high temperature performance shows thermal decomposition temperature up to 540℃.This provides an important reference values for high temperature resistant material preparation.

关 键 词：PPTA浆粕 正交 耐高温热稳定 降解 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TB324[一般工业技术—材料科学与工程]