摘要
采用低温溶液法共缩聚反应合成了对苯二甲酰氯（TPC）摩尔分数为0.05～0.15的改性间位芳香族聚酰胺（PMIA）共聚物.用1H-NMR对改性共聚物进行分析,讨论了TPC的含量对共聚物比浓对数粘度的影响,对改性聚合物进行了热失重分析,并用红外光谱跟踪法探讨了共聚物的热降解过程,并和纯的PMIA进行比较.实验结果表明：用TPC改性PMIA具有更好的耐热性,而且随着TPC含量的增加,耐热性更好.
Modified meta-aramid （PMIA） copolymer with TPC mole fraction of 0.05-0.15 was prepared by low-temperature-solution polycondensation in DMAc. The copolymer was characterized by ^1H-NMR, effects of the mole ratio of TPC on ηinh were investigated. The thermal properties of copolymers were analyzed by TGA. The pyrolysis process of copolymer with TPC mole fraction of 0. 05-0. 15 was detected by FT-IR and an initial explanation was given to the mechanism of their heat degradation. All the results show that the copolymer exhibits more excellent heat-resistant properties than PMIA.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第1期55-59,共5页
Journal of East China University of Science and Technology
