Anhydride Cured Bio-Based Epoxy Resin: Effect of Moisture on Thermal and Mechanical Properties
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- 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 language | English |
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Article number | 1900031 |
Number of pages | 9 |
Journal | Macromolecular materials and engineering |
Volume | 304.2019 |
Issue number | 7 |
DOIs | |
Publication status | Published - 25 Apr 2019 |