摘要
针对传统的聚对苯二甲酰对苯二胺(PPTA)聚合工艺中二单体等当比难以控制而使纤维相对分子质量小造成无法达到最佳力学性能的问题,创新研究AB型PPTA新单体4-(4-氨基苯胺羰基)苯甲酸(APBA)的合成工艺。APBA可用于制备酰氯化物或直接聚合成PPTA。结果表明:以对甲氧羰基苯甲酰氯(MBC)和对硝基苯胺为原料,经缩合、水解、还原制得APBA,总收率为88.4%,纯度为97.6%。APBA再经均缩聚制得PPTA,其特性黏数达0.9 dL/g。
In order to solve the problem of difficultly controlling the two monomers＇ equal mole that makes the fiber molecular weight too small to achieve the best mechanical performance in the traditional poly-（p-phenylene terephthalamide） （PPTA） polymerization,a new AB type-monomer of PPTA named 4-（4-amino-phenylaminecarbonyl） benzoic acid （APBA） is innovatively synthesized in this study. APBA can be used in the preparation of acyl-chloride compound or directly polymerized into PPTA. The experimental results show that high-purity APBA with purity 97.6% is synthesized from p-nitroaniline and m-ethoxycarbonyl benzoic chloride （MBC） as raw materials by condensation, hydrolysis and reduction. The overall yields of APBA can reach 88.4%. PPTA is obtained by homogeneous polycondensation of APBA. Its intrinsic viscosity is 0. 9 dL/g.
出处
《现代化工》
CAS
CSCD
北大核心
2013年第4期63-67,共5页
Modern Chemical Industry
基金
江苏省科技支撑计划项目(BE 2011129)
浙江省生物燃料利用技术研究重点实验室项目
