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Alireza Ashori,Saman Menbari,Reza Bahrami 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.38 No.-
This work reports an improvement in the mechanical and thermo-mechanical properties of short carbonfiber (SCF)/polypropylene (PP) composite, resulting from coating of the SCFs with exfoliated graphenenanoplatelets (xGnPs). Firstly, the xGnPs were coated on the SCFs surface by a simple physical absorptionmethod, and then the composites were manufactured by melt blending and hot-press processing. Theamount of SCFs was kept constant at 15 wt% and the amount of xGnP was varied up to 3 wt%. Results oftensile and impact measurements indicated that, for the xGnP–SCF/PP composite, maximum tensilestrength, tensile modulus and impact strength were 43.4 MPa, 1.052 GPa, and 38.1 J/m, respectively,corresponding to 13.6%, 41.7%, and 7.3% enhancement compared to the untreated SCF/PP composite. Inaddition, the results of dynamic mechanical thermal analyses indicated enhancement in storagemodulus and damping capacity for the treated samples; however, no significant difference was observedin the glass transition temperature. The xGnP–SCF/PP interface adhesion enhancement was clearlyshown by scanning electron microscopy (SEM) images of the tensile failure surfaces. Finally, the optimalxGnP content for effectively improving the overall composite mechanical and thermo-mechanicalperformance was found to be 1 wt%.