【摘要】 研究了在N-甲基吡咯烷酮-氯化钙（NMP-CaCl₂）溶剂体系中,各种主要因素对对苯二甲酰氯（TPC）、间苯二甲酰氯（IPC）和对苯二胺（PPD）、间苯二胺（MPD）低温溶液共缩聚反应的影响。并对共聚物进行了红外光谱（IR）和热分析的测试及表征。实验结果表明,当间位苯基和对位苯基摩尔比（M/P）为3/7时,反应最佳条件是:单体摩尔浓度为0.40mol/L,反应起始温度5—12℃,CaCl₂用量为4%（wt%）,反应搅拌时间15min以上,获得的聚合物对数比浓粘度（ηinh）≥2;当W/P=1/1时,单体浓度0.60mol/L,CaCL用量4—6%,反应起始温度为0—5℃,聚合物ηinh>1;M/P≥3/7,聚合物溶于反应体系。随着PPTA分子链中间位苯基组分（W/P）增加,所得聚合物的热稳定性降低,溶解度增加。更多还原

【Abstract】 In this paper, the low-temperature solution copolycondensation of terephthaloyl chloride（TPC）, isophthaloyl chloride （IPC） and p-phenylenediamine （PPD）, m-phenylenediamine （MPD） inNMP-CaCl₂ solvent system were studied in detail. Experimental results show that the optimalconditions are: the molar ratio of m-phenylene to p-phenylene group 3: 7, monomer concentration0.40 mol/L, initial temperature 5-12℃, the amount of CaCl₂ 4% by weight solvent, stirringtime more than 15 minutes,η_inh of copolymer obtained more than or equal to 2. The copolymerobtained was characterized by IR, thermoanalysis and solubility.更多还原