Epoxy Phthalonitrile Polymers.
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A bisorthodinitrile monomer and an epoxy monomer are mixed with or without an amine curing agent and heated to a temperature sufficient to induce polymerization. The resulting epoxy-phthalonitrile copolymer has improved properties relative to the epoxy polymers including higher thermal and oxidative stability, higher glass transition temperature, better shelf life, lower water absorptivity, and better electrical properties. The properties of the epoxy-phthalonitrile copolymer can be varied by varying the epoxy-phthalonitrile ratio.
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