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Studies of addition type polyimidesulfones and their composites
Author(s) -
Lee Yuder,
Ting Maoi
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070410922
Subject(s) - materials science , composite material , thermal stability , solubility , maleimide , benzophenone , sulfone , thermogravimetric analysis , melt flow index , graphite , polymer chemistry , polymer , copolymer , chemistry , organic chemistry
Addition type polyimidesulfone oligomers have been synthesized from 3,3′,4,4′‐benzophenone tetracarboxylic dianhydride and 3,3′‐bis(aminophenyl) sulfone using three latent crosslinking groups as endcappers. The prepolymers were isolated and characterized for infrared spectra analysis, solubility test in various type solvents, melt flow, and cure properties. The crosslinked polyimides were characterized for thermal stability in a nitrogen atmosphere. The most promising systems, nadimide and maleimide prepolymers, were selected for the detailed study as the matrix for graphite woven cloth reinforced composites for which mechanical and other properties were tested. The differences due to various end‐capped agents, including processibility, the extent of crosslinking of prepolymers, and thermal and mechanical properties of their composites, were compared.