Progress of Benzoxazine-based Heat Resistant Polymer Alloy

Abstract

Thermosetting resins with benzoxazine rings in backbone forms network structure under heating more than 200 ℃ by itself. These were reported as a higher performance resin with various superior properties. However, the practical use was restrictive for reasons of high hardening temperature, generation of pyrolysis gas under thermal hardening condition and inferior flexibility. Recently, the reaction process was elucidated in detail, and several catalysts promoting hardening under moderate condition were developed. In this article, outline of benzoxazine-based polymer alloy for improvement of flexibility, mechanical property and heat resistance were summarized.