Kinetic Structural Model for the Network Build-Up During the Reaction of Cyanic Acid Esters with Glycidyl Ethers

Publisher Website
Google Scholar
Abstract
A kinetic structural model is developed to describe the reaction of difunctional aromatic cyanic acid esters with aromatic bisglycidyl ethers. Based on the main reactions found—trimerization of the cyanate groups, insertion of glycidyl ethers into the cyanurate, isomerization into isocyanurates, build-up of oxazolidinones, phenol abstraction, and phenol-glycidyl ether addition—the reaction kinetics were modeled by a system of differential equations. the resulting concentrations of the possible structural elements were combined with the help of cascade formalism to describe the statistics of the network build-up. the approach is illustrated by discussing the influence of the several reaction steps on the gelation behavior and the network structure. It was found that a broad spectrum of possible structural compositions can be simulated, especially near the equimolar initial ratio of cyanate to epoxy groups.

This publication has 6 references indexed in Scilit: