01816nam a2200193Ia 4500003001000000005001700010040000900027245008600036490005700122520113400179650001801313650001501331700002001346700001701366700002201383700002001405856015601425008004101581MX-MdCICY20260521091622.0  cCICY10aThe manufacture and mechanical testing of thermosetting natural fibre composites.0 vJournal of Materials Science, 35(2), p.293-298, 20003 aHigh volume fraction hemp and flax fibre composites were manufactured using low viscosity epoxy and phenolic resins. Using 80 per cent volume fraction of flax fibres in epoxy resin, composites with a mean stiffness of 26 GPa and a mean strength of 378 MPa were produced. By reducing processing damage of the plant fibres mechanical properties could be increased by 40 per cent. Strips of retted fibre tissue were found to be just as effective for reinforcement as fibre bundles and individual fibres. Phenolic resin and decorticated flax fibres produced very poor composites. Using 40 per cent volume fraction of fibres the mean stiffness was 3.7 GPa and the mean strength was 27 MPa. Two fibre pre-treatments were devised to improve adhesion with resins. The first, 6 M urea was used only in natural fibre-epoxy composites where it increased the stiffness but not the strength. The second pre-treatment was a 50 per cent PVA solution, which was cured prior to the addition of space filling resin. The PVA treatment improved the stiffness and strength of both natural fibre-epoxy composites and natural fibre-phenolic composites.14aNATURAL FIBRE14aCOMPOSITES12aHepworth, D. G.12aBruce, D. M.12aVincent, J. F. V.12aJeronimidis, G.40uhttps://drive.google.com/file/d/1TCIwKHSpfnf-7aVFNZX7LrdFMbb6C_rc/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d