Anhydride Cured Bio-Based Epoxy Resin: Effect of Moisture on Thermal and Mechanical Properties

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Authors

External Organisational units

  • Wood K Plus Kompetenzzentrum Holz GmbH

Abstract

This paper describes the development of a novel thermoset based on epoxidized hemp seed oil. The optimization of the hardener (anhydride) and crosslinking accelerator (2-ethylimidazol) concentration as well as the curing parameters are discussed in detail. The optimized material exhibits a bio-based carbon portion of 57.5 wt% and represents an innovative and sustainable substitute for fully petrochemical-based resins in terms of thermal and mechanical performance characteristics. However, also a major challenge with regard to practical applications of (bio-based) thermosets with anhydride curing agent thermosets is identified and addressed: the sensitivity to moisture absorption both during curing and in the fully cured state.

Details

Original languageEnglish
Article number1900031
Number of pages9
JournalMacromolecular materials and engineering
Volume304.2019
Issue number7
DOIs
Publication statusPublished - 25 Apr 2019