航空材料学报2011，Vol.31Issue(3)：86-89,4.DOI:10.3969/j.issn.1005-5053.2011.3.017
ODA/TPER共聚型聚酰亚胺的合成及其性能研究
Synthesis and Properties of Copolyimides Based on ODA/TPER
晁敏 1寇开昌 1吴广磊 1张教强 1张冬娜 1蒋洋1
作者信息
- 1. 西北工业大学理学院应用化学系,西安,710129
- 折叠
摘要
Abstract
Four polyimides were synthesized via copolymerization of pyromellitic dianhydride( PM DA), 4,4'-diaminodiphenyl(ODA) and 1,3-bis(4-aminophenoxy) benzene (TPER) at different monomer ratios. Their properties were characterized by Ubbelohde viscometer, XRD, SEM and TGA、 The results showed that the introduction of TPER caused the change of Pl films from amorphous to semicrystalline, and also the toughness of PI films was improved by the flexibel chain in the TPER molecules. When the TPER content was low, due to the cooperative effect of crystalline, the excellent thermal stability of PI films was displayed and the 5％ weight loss temperature was 558℃ in N2.关键词
共聚/聚酰亚胺/结晶/韧性/热稳定性Key words
copolymerization/ polyimide/ crystalline/ toughness / thermal stability引用本文复制引用
晁敏,寇开昌,吴广磊,张教强,张冬娜,蒋洋..ODA/TPER共聚型聚酰亚胺的合成及其性能研究[J].航空材料学报,2011,31(3):86-89,4.
