Cure studies of a benzoxazine-based phenolic resin by isothermal experiment

Abstract

Isothermal cure kinetics of newly synthesized benzoxazine-based phenolic resin were studied by differential scanning calorimetry. The cure reaction of benzoxazine-based pheolic resin follows an autocatalytic mechanism. The conversion at the maximum cure rate was independent of the cure temperature. Assuming that the overall reaction order was second, kinetic parameters of cure reaction for benzoxazine-based phenolic resin were determined from an autocatalytic kinetic model. The modified autocatalytic model has a good agreement with experimental results. In addition, the activation energy and the frequency factor were calculated by the Arrhenius plot. © 1995, The Society of Polymer Science, Japan. All rights reserved.