Tannin-Resorcinol-Formaldehyde Resin and Flax Fiber Biocomposites
Résumé
Tannin-resorcinol-formaldehyde (TRF) resin shows a good compatibility with natural flax fibers and yields composite materials of good mechanical properties when using paraformaldehyde as a hardener. Different formulations, curing parameters and processes such as high-temperature curing in press or spray-drying have been explored in order to adapt this resin to composite manufacturing and to improve the properties of this new material. Additional testing has been performed on the TRF resin by thermomechanical analysis to observe its reactivity at different pH and with the use of different hardeners.