Radiation effect of aromatic thermoplastic polyimide (new-TPI)

Electron irradiation effects on tensile properties and molecular motion were studied for a newly developed thermoplastic aromatic polyimide (new-TPI). It has an extremely high glass transition temperature (250°C) and shows adequate tensile properties at high temperature. The strength and modulus mea...

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Bibliographic Details
Published in:Polymer (Guilford) 1991, Vol.32 (14), p.2499-2504
Main Authors: Hirade, Tetsuya, Hama, Yoshimasa, Sasuga, Tsuneo, Seguchi, Tadao
Format: Article
Language:English
Subjects:
Applied sciences
aromatic thermoplastic polyimide (new-TPI)
electron irradiation
Exact sciences and technology
matrix resins for CFRP
molecular kinetics
Physical properties
Polymer industry, paints, wood
Properties and testing
Radiation influence
Technology of polymers
tensile properties
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Summary:Electron irradiation effects on tensile properties and molecular motion were studied for a newly developed thermoplastic aromatic polyimide (new-TPI). It has an extremely high glass transition temperature (250°C) and shows adequate tensile properties at high temperature. The strength and modulus measured at 23°C are scarcely affected by irradiation up to 100 MGy, but elongation after irradiation at 100 MGy decreases to 50% of the initial value. Strength and modulus at high temperature increased with irradiation. Information on changes in molecular motion revealed that the improvement in the high temperature properties is brought about by creation of crosslinking induced by non-oxidative electron irradiation.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(91)90327-F