@inproceedings{oai:jaxa.repo.nii.ac.jp:00005222, author = {横田, 力男 and Yokota, Rikio}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: Proceedings of International Symposium on "SM/MPAC & SEED Experiment"}, month = {Mar}, note = {International Symposium on "SM/MPAC & SEED Experiment" (International Congress Center EPOCHAL TSUKUBA, 10-11 March 2008), For developing heat resistant and high performance polyimides, the relationships between the sterochemical imide structures and thermo-mechanical properties have been discussed. Addition type imide oligomers (TriA-Pl) such as 2, 3, 3', 4'-biphenyltetracarboxylic dianhydride (a-BPDA), /oxydianiline (ODA)/4-phenylethynyl phthalic anhydride (PEPA) and/or other asymmetric monomers (fluorenylidene groups: BAFL, BAOFL) were synthesized and characterized. The cured oligoimides exhibited high thermal, mechanical properties in addition to the excellent melt fluidity and solubility, TriA-Pl/carbon fiber composites were well consolidated for high temperature structural components. The heat sealable, thermoplastic thin films having high durability in space has been successfully developed by using asymmetric 2, 3, 3', 4'-oxydiphthalic anhydride (a-ODPA) as well. Thin film of a-ODPA polyimide exhibited excellent high thermo-mechanical properties (Tg = 270 C) and heat sealing property with durability for irradiation of proton. It is shown that asymmetric aromatic imide structures without any weak linkages such as alkyl and methylene groups are powerful tools for a molecular design of high performance polymeric materials for solar sail membrane., Physical characteristics: Original contains color illustrations, 資料番号: AA0064307006, レポート番号: JAXA-SP-08-015E}, pages = {35--47}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {Thermal and environmental stability of polymeric materials: New generation, novel asymmetric polyimides for aerospace materials}, volume = {JAXA-SP-08-015E}, year = {2009} }