Journal of Coatings Technology and Research

, Volume 11, Issue 2, pp 143–157 | Cite as

Cure kinetics of several epoxy–amine systems at ambient and high temperatures

  • Monoj Pramanik
  • Eric W. Fowler
  • James W. Rawlins
Article

Abstract

Epoxy-crosslinker curing reactions and the extent of the reactions are critical parameters that influence the performance of each epoxy system. The curing of an epoxy prepolymer with an amine functional group may be accompanied by side reactions such as etherification. Commercial epoxy prepolymers were cured with different commercial amines at ambient as well as at elevated temperatures. Singularly, only epoxy–amine reactions were observed with diglycidyl ether of bisphenol-A (DGEBA)-based epoxides in our research even upon post-curing at 200°C. Etherification side reaction was found to occur at a cure temperature of 200°C in epoxides possessing a tertiary amine moiety. A combined goal of our research was to understand the effect of tougheners on the cure of epoxy–amine blend. To discern the effect of tougheners on the cure, core–shell rubber (CSR) particles were incorporated into the epoxy–amine blend. It was observed that CSR particles did not restrict the system from proceeding to complete reaction of epoxy moieties. Besides, CSR particles were found to accelerate the epoxy-amine reaction at a lower level of epoxy conversion. The lower activation energy of epoxy–amine reaction of CSR incorporated system compared to control supported the catalytic effect of CSR particles on the epoxy-amine reaction of epoxy prepolymer and amine blends.

Keywords

Epoxide Hardener Crosslinker Core–shell rubber particles Near IR 

Supplementary material

11998_2013_9565_MOESM1_ESM.docx (123 kb)
Supplementary material 1 (DOCX 123 kb)

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Copyright information

© American Coatings Association 2014

Authors and Affiliations

  • Monoj Pramanik
    • 1
  • Eric W. Fowler
    • 1
  • James W. Rawlins
    • 1
  1. 1.School of Polymers and High Performance MaterialsThe University of Southern MississippiHattiesburgUSA

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