A New Tetra-Epoxide Resin as a Matrix for Advanced Composites

摘要

Two versions of a new tetra-epoxide resin were supplied by Shell Laboratories, for evaluation as a possible matrix for carbon fibre. Because of the absence of tack in the resulting pre-preg both resins were modified at RAE with a minor percentage of the Bisphenol A resin, Shell 828. All four formulations (ie modified and unmodified 114 and 115 resins) had their curing characteristics established and were then used in conjunction with Courtaulds XAS carbon fibre, the reinforcement being in the form of satin-weave and unidirectional fabrics. The mechanical properties of the derived laminates were obtained at room temperature, at 80 degrees C and 130 degrees C. Resistance to a range of aircraft fluids was also examined. The best results overall were obtained with the lower molecular weight epoxide blended with Bisphenol A resin; and it is recommended that more extensive trials and long-term testing should begin. (Author)