DHPZ-DA/DAPE/PPD/NDA杂萘聚芳酰胺的合成及性能  

SYNTHESIS AND PROPERTIES OF HETERCYCLIC POLYAMIDES FROM DHPZ-DA/DAPE/PPD/NDA

作　　者：于艳[1] 刘鹏涛[2] 蹇锡高[2] 刘程[2] 张元红[2] 洪定一[3] 李扬[4] 吕占霞[4] 

机构地区：[1]辽东学院化工系,辽宁丹东118000 [2]大连理工大学高分子材料系精细化工国家重点实验室,辽宁大连116012 [3]中国石油化工股份有限公司,北京100029 [4]北京燕山石化公司研究院,北京102500

出　　处：《高分子材料科学与工程》2005年第2期69-72,共4页Polymer Materials Science & Engineering

基　　金：国家高技术计划(863)重大项目(2003AA33G030)

摘　　要：由自制二胺1,2-二氢-2-(4-氨基苯基)-4-[4-(4-氨基苯氧基)-苯基]-二氮杂萘-1-酮(DHPZ-DA)、4,4'-二氨基二苯醚(DAPE)和对苯二胺(PPD)与2,6-萘二酸(NDA)进行共缩聚反应,改变不同二胺的配比,所得聚芳酰胺树脂特征粘度为0.24dL/g～2.78dL/g;以FT-IR、1H-NMR手段分析了聚合物的结构;用DSC、TGA手段研究了聚合物的耐热性能。结果表明,该类聚合物具有较高的玻璃化转变温度(280℃以上);氮气气氛中5%热失重温度在450℃以上;当DHPZ-DA+DAPE在二胺中比例达70%时能溶于NMP中,当DHPZ-DA+DAPE含量达80%时能溶于DMAc、DMF等非质子极性溶剂中。Novel aromatic copolyamides having phthalazinone units in the main chain were synthesized. The polyamides were prepared from 1,2-dihydro-2-(4-aminophenyl)-4--phthalazin-1-one(DHPZ-DA)?4,4′-diamino biphenyl ether(DAPE), p-phenylene diamine(PPD) and 2,6-naphthalene dicarboxylic acid(NDA) by the direct polycondensation method. The polyamides, the inherent viscosities of which ranged from (0.24) dL/g to (2.78) dL/g, were obtained almost quantitatively. The polyamides indicate high thermal properties: glass transition temperature are found in the range between 470 ℃ and 520 ℃, and 5% mass loss temperature in the nitrogen atmosphere range from 287 ℃ to 379 ℃. When the molar ratios of DHPZ-DA and DAPE are more than 70%, the polymers are soluble in NMP. When the ratios are more than 80%, they are soluble in DMAc, DMF etc. The introduction of the twist, nonplanar phthalazinone structure into the main chains of polyamides is effective in improving the solubility without lowering the high thermal properties.

关 键 词：聚芳酰胺 2.6-萘二酸 耐热性 可溶性 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]