Study on the Reaction Mechanism of Epoxy Resin/Dicyanamide System

Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (4): 95-97.

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Study on the Reaction Mechanism of Epoxy Resin/Dicyanamide System

Zhang Baolong, Shi Keyu, You Yingcai, Zhou Deliang, Du Zongjie, Huang Jifu

Department of Chemistry, The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin 300071

Received:1997-09-26 Revised:1998-01-12 Published:1998-08-10 Online:1998-08-10

Abstract

Abstract: The reaction mechanism, reactivities, and apparent activation energies of epoxy/dicyanamide curing system accelerated by C₆H₅NHCONR₂ (R=CH₃, n-C₄H₉, i-C₃H₇) werestudied by DSC and GC techniques.The results showed that in reaction of C₆H₅,NHCONR₂ with either dicyanamide or epoxy resin there was a dimethylamine released reacting with epoxy resin, giving a tertiary amine, which accelerated the anionic homopolymerization of epoxy resin.

Key words: substituted urea, epoxy resin, dicyandiamide, curing reaction

Zhang Baolong, Shi Keyu, You Yingcai, Zhou Deliang, Du Zongjie, Huang Jifu. Study on the Reaction Mechanism of Epoxy Resin/Dicyanamide System[J]. Chinese Journal of Applied Chemistry, 1998, 0(4): 95-97.

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Study on the Reaction Mechanism of Epoxy Resin/Dicyanamide System

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