Effect of aminated polyphenylene sulfide on the mechanical properties of short carbon fiber reinforced polyphenylene sulfide composites

The aim of this study was to investigate the effect of the aminated polyphenylene sulfide (PPS-NH2) used as compatibilizer on the mechanical properties of carbon fiber (CF) reinforced polyphenylene sulfide (PPS) composites. The compatibilizers PPS-NH2 which were synthesized by the condensation polymerization of sodium sulfide (Na2S), p-dichlorobenzene (DCB), and the third active monomer 2,5-dichloroaniline (DCA). Composites with 20 wt% CF, 75 wt% PPS and 5 wt% PPS-NH2 which were synthesized by different mole ratios of Na2S/DCB/DCA were prepared by melt blending and injection molding. According to the results of mechanical properties tests, dynamic mechanical analysis (DMA), microbond test (apparent interfacial shear strength, τapp) and scanning electron microscopy (SEM), the compatibilizers PPS-NH2 could improve the macro-mechanical properties and interfacial bonding between CF and PPS matrix.