Study On the Preparation and Properties of Nano- SiC/MC Nylon 6 Composites

Nano-SiC/MC nylon6 (MCPA6) composites were prepared by in situ anionic polymerization, followed by properties' characterization of composites and morphology. FTIR shows that there is no change in the functional groups of MCPA6 by adding nano- SiC and only physical interaction happening in the composites. SEM reveales that bonding state of the two-phase interface of the composites has been affected by the ratio of nano-SiC. Nano-SiC (2.5 wt-%) is fine dispersed in MCPA6 matrix, which enhances interface compatibility and bind strength between nano-SiC and MCPA6, the best comprehensive properties of the composite are obtained. Comparing with untreated MCPA6, the notched Izod impact strength, tensile strength and flexural strength are respectively increased by 208.8%, 81.1% and 27.9%, while the Vicat softening temperature is increased by 20.2%.