The cure chemistry of polysulfides

摘要

Liuqid polysulfide polymers can be cured by a wide variety of compounds and through a number of reaction paths. The most commonly used system is the oxidation of the thiol terminal groups in the presence of metal peroxides. Addition and substitution reactions are also possible with such diverse products as epoxy resins, isocyanates, acrylics and anhydrides. Although having a noteworthy commercial history little is known of the detailed cure mechanism and the article discusses some of the current research being carried out.