Abstract
Abstract The effect of styrene on epoxy resin formulations for filament winding were studied from the viewpoints of processing, mechanical, and thermal properties. Five epoxy blends with different compositions of epoxy resin, hardener, and styrene were made and evaluated. The addition of a small amount (maximum 10%) of styrene to the epoxy formulations decreased the resin viscosity from 605 to 160 cP and increased the pot life of the mixed resin system. The tensile and flexural properties were found to be similar, regardless of styrene content. The thermal properties (heat deflection temperature, glass transition temperature, etc.) of the resulting thermoset blends decreased as the styrene content increased. From the viewpoints of resin viscosity, pot life, and mechanical and thermal properties, it was found that the addition of a small amount (5–10%) of styrene to an epoxy resin was adequate for an epoxy matrix system used for filament winding.
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