Thermal, oxidative and radiation stability of polyimides - II. Polyimides based on bismaleimidohexane and bismaleimidodiphenylsulphone with different diamines

Different polyimide resins were synthesized using 1,6-bis-maleimidohexane and the following compounds with terminal amino groups: 4,4-diaminodiphenylmethane, 4,4'-diaminodiphenylsulphone, 1,4-bis-(3-aminopropyl)-piperazine and 4,4'NN-bismaleimidodiphenylsulphone and 1,2-diaminoehtane and 1,4-bis-(3-aminopropyl)-piperazine. The thermal and thermooxidative behaviour of the polyimide resins was studied by thermogravimetric measurements (TG) in oxygen and nitrogen. Polyimide resins have been irradiated and their radiation stability evaluated on the basis of thermal and thermooxidative behaviour of irradiated samples. (C) 2003 Elsevier Ltd. All rights reserved.