▎ 摘　　要

The interlaminar shear strength (ILSS) of the fiber-reinforced polymer (FRP) composites is critical in structural applications. At the same time, glass transition temperature T-g determines the degree of crosslinking, which depends majorly on post-curing temperature and time. In this study, the post-curing parameters (time and temperature) are initially varied to analyze their effect on the ILSS and T-g values of the Kevlar/epoxy (KE) laminated composite samples. For optimizing post-curing parameters, the temperatures selected were 70, 140, 210, and 280 degrees C and time designated was 3, 6, and 9 hours. It was found that the KE sample post-cured at 140 degrees C for 6 hours retained its aesthetic properties and gave an optimized result without any sign of over-curing. Further, graphene nanoplatelet (GnP) was added to KE composites (KE-GnP) in 0.25, 0.5 and 1.0 wt % of epoxy. ILSS characterization of KE-GnP was done at 25 degrees C and in-situ elevated-temperature environments of 70, 100, and 140 degrees C. T-g values were also evaluated. A polynomial surface was generated using the curve fitting toolbox of MATLAB from the ILSS data points obtained. Energy-dispersive X-ray (EDX) spectroscopy was used to observe GnP dispersion uniformity in the matrix. Significant outcomes of the investigation are discussed in this paper.