Writer: Jun Chen, Wei Wu, Yi Yu

Publication:  Journal of Applied Polymer Science, 2010,117(5)：2964-2971

Abstract: The research focused on the PA66/PC/sili-cone rubber composites. By adding silicone rubber as a toughener, the composites were prepared via dynamic vulcanization. The morphology and properties of the compo-sites were characterized by FTIR, TEM, SEM, XRD, etc. The FTIR spectrum of the composites presented an increase of the 1730, 1240, and 1450 cm that can be due to the C¼ O interaction and the presence of the OA COA O group, and this fact can mean the formation of the PA66–PC copolymer. The cross-linking of silicone rubber in the PA66/PC matrix formed the net-like structure like semi-IPN, which is propitious to enhance the interaction between PA66 matrix and PC and in further makes the PC particles embed in PA66 matrix closely. Novel composites are gained with out-standing mechanical properties and high temperature resistance, so the combine toughening by silicone rubber and PC is an ideal toughening system owing to the synergistic effect. In addition, the PA66/PC/silicone rubber/OMMT composite exhibits better flexile strength and flexile modulus without weakening other mechanical properties.