Abstract
A basic investigation was performed on the thermal serviceability of copolmers, derived from bismaleimides and vinylbenzyl compounds. Synthesized model compounds were divinylbenzylether and 4 kinds of bifunctional vinylbenzyl compounds having the skeletal structure of bisphenol A, methylhydroquinone, or piperazine. The model compounds were curable through copolymerization with 4, 4'-bismaleimidediphenylmethane. Adding to the curing behavior, the relationship was clarified between the structure of the vinylbenzyl compounds and the properties of cured resins, such as Tg, HDT, flexural strength at an elevated temperature, thermogram, and weight loss by heating. Furthermore, the thermal resistance of CFRP from these resins was compared with that from commercial bismaleimide resins.
