Impact of types of orthophthalic unsaturated polyester matrix on tensile strength of woven roving fibers as reinforcement

This paper focuses on a unique form of polyester matrix composite with woven roving fibers as reinforcing agent, replacing the conventional E-glass. The impact of different types of orthophthalic unsaturated polyester matrix and their composites on tensile strength of polyester matrix composite with woven roving fiber is investigated. Polyester matrix composite with woven roving fiber reinforcement is made by hand lay-up technique, where different types of orthophthalic unsaturated polyester matrices available in the market are used. The mechanical properties of the developed material are tested using universal testing machine, which investigated tensile strength. The BYK A-555 (coded 555) orthophthalic unsaturated polyester matrix showed 30% greater tensile strength and required least curing time as compared to other matrices, including Mc Laren S3133 (coded 3133), LUPOY-GP5300 (coded GP5300) and HSEA-LF1 (coded LF1). However, the composite of 3133 and 555 shows 50% greater tensile strength as compared to single matrix, and when all orthophthalic unsaturated polyester resins (3133 + 555 + GP5300 + LF1) are mixed together, their composite show 70% greater tensile as compared to single unsaturated polyester matrix.