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GAO Xiang,MAO Lixin~*,ZHANG Mengxiang,JIN Riguang(College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China )  
Ternary Attapugite/Polypropylene/Polycarbonate(AT/PP/PC)composites containing particles with core-shell morphology were achieved via the two-step melt blending process. Under the function of shear stress, core-shell structure particles with AT as the core and PP as the shell were formed in the composites. The mechanical properties, morphology, and impact fracture surface of the ternary composites were studied by means of the tensile tester, impact tester, TEM, SEM, etc. The results show that high toughness could be obtained by particles in the three component systems with core-shell structure, and the tensile strength and yield stress for the three component composite are higher than those of the PP/PC composite as a result of the incorporation of AT. Based on the SEM analysis for impact morphology, it is considered that the interfacial voiding and the reinforcement effect of AT on the dispersed phase are the main toughening mechanisms in the ternary AT/PP/PC composites.
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