Analysis of the curing behavior of bismaleimide resins

A. V. Tungare, G. C. Martin

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

The curing behavior of bismaleimide resins was investigated using formulations containing different stoichiometric ratios of 1,1′‐(methylenedi‐4,1‐phenylene) bismaleimide (BMI) and 4,4′‐methylenedianiline (MDA). The resin cure involved a low temperature primary amine addition to the maleimide double bounds and a high temperature homopolymerization of the maleimide double bonds. The kinetics of the amine addition and the homopolymerization reactions were determined using Fourier Transform Infrared Spectroscopy and Differential Scanning Calorimetry. The nucleophilic addition of the primary amines to the maleimide double bonds occurred by a second‐order reaction, and was at least two orders of magnitude faster than the homopolymerization reaction, which occurred by a multistep mechanism involving thermal initiation of chain growth, followed by chain propagation. A kinetic model for the curing behavior was developed and used to predict the extents of the amine addition and the homopolymerization reactions in networks cured under isothermal or dynamic conditions.

Original languageEnglish (US)
Pages (from-to)1125-1135
Number of pages11
JournalJournal of Applied Polymer Science
Volume46
Issue number7
DOIs
StatePublished - Nov 5 1992

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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