A new high-performance thermoplastic polyimide and its fiber-reinforced composites

A new high-performance thermoplastic polyimide has recently been synthesized from 3,3′,4,4′-benzophenonecarboxylic dianhydride (BTDA) and 2,2′-dimethyl-1,3-(4-aminophen-oxy)propane (DMDA). It has been shown to possess good dimensional and thermal stability, as well as exhibiting excellent mechanical...

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Bibliographic Details
Published in:Thermochimica acta 1994-09, Vol.243 (2), p.115-127
Main Authors: Livengood, Bryan P., Chalmers, Tammy M., Gu, Yi, Zhang, Yi-Ding, Harris, Frank W., Cheng, Stephen Z.D.
Format: Article
Language:English
Subjects:
BTDA—DMDA
Composite
Polyimide
Stability
Thermoplastic
Toughness
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Summary:A new high-performance thermoplastic polyimide has recently been synthesized from 3,3′,4,4′-benzophenonecarboxylic dianhydride (BTDA) and 2,2′-dimethyl-1,3-(4-aminophen-oxy)propane (DMDA). It has been shown to possess good dimensional and thermal stability, as well as exhibiting excellent mechanical properties, in particular the extraordinary toughness of BTDA—DMDA with a fracture energy G 1C value of 4.28 kJ m −2, which exceeds that of other high-performance materials by about 100%. Clearly, this material has great potential as a matrix resin for high-temperature, high-performance composites. This report focuses on the study of this polymer's structure, crystal morphology, crystal—amorphous interface and relaxation processes in order to find the origin of this unusually high toughness. In addition to this, we have also examined the matrix/fiber interfaces of BTDA—DMDA-based carbon fiber and polyimide fiber-reinforced composites via their mechanical properties, and then their crystallization and relaxation behaviors.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(94)85047-X