High-performance aromatic polyimides for inertial confinement fusion experiments

Autor: Bruno Dufour, Benoît Blondel, Didier Marsacq, Gille Thevenot, Yolande Lavergne
Rok vydání: 2000
Předmět:
Zdroj: Polymer International. 49:1021-1023
ISSN: 1097-0126
0959-8103
DOI: 10.1002/1097-0126(200009)49:9<1021::aid-pi522>3.0.co;2-d
Popis: Inertial confinement fusion (ICF) experiments have been conducted in a polymer capsule in which nuclear products were located. To vary the mechanical properties of polyimide, various polyimide blends and copolymers have been prepared and compared. In the first case, polyimide blends are obtained by mixing different poly(amic acid) solutions (PMDA-ODA and PMDA-PDA) in NMP. In the second case, dianhydride (PMDA) and various diamines (ODA and PDA) are directly mixed in the polymerization medium to form a copolymer in NMP solution. The Young's modulus and coefficient of thermal expansion have been measured for the various polyimide film specimens. It is shown that the mechanical properties of a polyimide strongly depend on its composition. The effect of the poly(amic acid) preparation process (blends or copolymers) on the mechanical properties is not significant, and the blending of poly(amic acid) solutions leads to a copolymer.
Databáze: OpenAIRE
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