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International Journal of Polymer Science - Volume 2015 2015, Article ID 840823, 7 pages -

Research Article

Department of Industrial and Systems Engineering, Shiley-Marcos School of Engineering, University of San Diego, 5998 Alcala Park, San Diego, CA 92110, USA

Department of Mechanical Engineering, Shiley-Marcos School of Engineering, University of San Diego, 5998 Alcala Park, San Diego, CA 92110, USA

Research Support Instruments, 4325-B Forbes Boulevard, Lanham, MD 20706, USA

Received 22 February 2015; Revised 21 April 2015; Accepted 21 April 2015

Academic Editor: Cornelia Vasile

Copyright © 2015 Truc T. Ngo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Two different thermoset biocomposite systems are experimented in this study with the hope to improve their mechanical properties. Fiberglass and hemp, in form of fabrics, are used to reinforce the thermoset polymer matrix, which includes a traditional epoxy resin and a linseed oil-based bioresin UVL. The fiber-polymer matrix interface is modified using two different approaches: adding a plant-based oil pine or linseed to the polymer matrix or coating the fibers with 3-aminopropyltriethoxysilane APTES prior to integrating them into the polymer matrix. Epoxy resin is cured using an amine-based initiator, whereas UVL resin is cured under ultraviolet light. Results show that hemp fibers with APTES prime coat used in either epoxy or UVL matrix exhibit some potential improvements in the composite’s mechanical properties including tensile strength, modulus of elasticity, and ductility. It is also found that adding oil to the epoxy matrix reinforced with fiberglass mostly improves the material’s modulus of elasticity while maintaining its tensile strength and ductility. However, adding oil to the epoxy matrix reinforced with hemp doubles the material’s ductility while slightly reducing its tensile strength and modulus of elasticity.





Autor: Truc T. Ngo, James G. Kohl, Tawni Paradise, Autumn Khalily, and Duane L. Simonson

Fuente: https://www.hindawi.com/



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