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Synthesis and processing of model compound of PMR-15 resin

✍ Scribed by C. Conreur; J. Francillette; F. Laupretre

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
354 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

Aerospace industries have been concerned since long by composite materials using high-performance resins. The PMR-15 resin is now the most commonly used resin for industrial applications at high temperature, i.e., 300ЊC. Despite its comparative commercial success, the PMR-15 resin and its composites show several disadvantages [toxicity of the aromatic diamine (MDA), poor conservation of monomers solution, laminate microcracking]. The purpose of this work concerns the synthesis, the physicochemical characterization, and the processing of pure bisnadimide model compound to study the endo/exo isomerization of the endcaps and thermomechanical properties. We show that the isomerization mechanism proceeds by retro Diels-Alder reaction followed by recombination in exo isomer and glass temperature transition is upper than 350ЊC (380ЊC).

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