Abstract:
Different epoxy-based composites were prepared by using Kevlar fibers (KFs) and glass
fibers (GFs) as reinforcement. In the first step, modification of EPDM was done by
mixing it with MAH and DCP inside internal mixture followed by mixing of modified
EPDM into epoxy by using overhead mixer. In the second step, the mixed solution of
epoxy and modified EPDM was poured on fabric layers by hand lay-up method. It was
followed compression of composites inside compression molding machine. The
composites were characterized in terms of tensile test, Charpy impact test, and bending
test to access their mechanical properties. Tensile test results have revealed that KFRP
compsoites are ductile whereas GFRP composites are brittle. Moreover, it is indicated by
tensile and bending results that addition of EPDM has helped to better mechanical
behavior of composite structures. Bending test has shown that flexural properties have
been bettered due to increased content of EPDM. According to results of Charpy impact
test, the impact strength or energy absorption of composites has bettered with the greater
content of EPDM. Therefore, it can be said that KFRP composites are stronger as
compared to GFRP composites. It is also inferred that addition of EPDM has helped to
prepare mechanically strong compsoites.
