Effect of Maleic Anhydride-grafted Polypropylene on Recycled Carbon Fiber Reinforced Polypropylene

초록

As the problem of plastic based material waste is increasing, carbon fiber reinforced plastics (CFRPs) need to achieve closed life cycle. This study aims to investigate the potential for recycled carbon fiber reinforced plastics (rCFRPs) with polypropylene (PP). To improve mechanical properties of rCFRP, maleic anhydride grafted polypropylene (MAPP) was used as a coupling agent due to absence of functional group in PP. The rCFRPs were prepared by compression molding after stacking of recycled carbon fiber (rCF) wet-laid nonwovens and matrix films. The sufficient oxygen functional groups observed on rCF surface and they contributed to improve mechanical properties by covalent bond between maleic anhydride (MA) group and rCF surface. The tensile properties of the rCFRP with 2 wt% MAPP were dramatically increased compared to that without MAPP. However, the effect of MAPP content until 5 wt% on the tensile properties was slight.

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