期刊
JOURNAL OF POLYMERS AND THE ENVIRONMENT
卷 26, 期 1, 页码 224-234出版社
SPRINGER
DOI: 10.1007/s10924-017-0943-3
关键词
Epoxy bio-resin; Flax fiber; Acetic anhydride; Improved adhesion; Mechanical properties
资金
- Natural Sciences and Engineering Research Council (NSERC), Canada [418729]
Chemically treated acetic anhydride (AA) flax fiber mats were investigated. Bio-based epoxy resin and conventional epoxy resin unidirectional fiber composites were manufactured using a vacuum bagging technique. Flax fibers in the bio-resin composites were chemically treated with 1, 2, 3 and 4% (AA), while the fibers used with the conventional resin were not treated. The composites with the conventional resin were compared with the bio-resin in an untreated condition. A 2% AA treatment improved the bio-resin composite tensile strength, stiffness and bond shear strength by 55%, 58% and 7%, respectively. These three properties were evaluated and the results statistically analyzed using ANOVA. The AA reduced moisture absorption intake and improved adhesion of the fiber/matrix interface. The composites treated with 1-2% AA were most successful with a 65% moisture resistance. The scanning electron microscope was used to observe the fiber surface and fractured surfaces of the untreated and treated flax fibers. A chemical pre-treatment has improved the composite mechanical and moisture resistance over the non-treated fiber composites.
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