| 초록 |
2D-nanosheet fillers as graphene and MoS2 have drawn attention for increasing mechanical and thermal properties of polymers. In this study, synergistic effect of graphene oxide(GO) and MoS2 for enhanced mechanical and thermal properties is investigated. GO and MoS2 fillers are modified with amine-terminated PEG for better dispersion with PA6. PA6/GO and PA6/MoS2 masterbatches were prepared using solution mixing method. With different content of GO and MoS2 fillers, PA6 composites were fabricated by melt mixing method. Mechanical and thermal properties of PA6 composites are characterized. As the content of MoS2 filler increase, tensile strength and Young’s modulus increased. At 0.5wt% of GO and 2wt% of MoS2, tensile strength and Young’s modulus increased by 200% and 300% compared to neat PA6 and increased by 20% and 30% compared to composite without MoS2. Crystallization temperature(Tc) and degree of crystallinity(Xc) improved with increasing MoS2 content. |
