Preparation and properties of nano‐CaCO3/acrylonitrile‐butadiene‐styrene composites |
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| Authors: | Wen‐yi Wang Guo‐quan Wang Xiao‐fei Zeng Lei Shao Jian‐feng Chen |
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| Affiliation: | 1. Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China;2. Institute of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China;3. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China |
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| Abstract: | CaCO3/acrylonitrile‐butadiene‐styrene (ABS) and CaCO3/ethylene‐vinyl acetate copolymer (EVA)/ABS nanocomposites were prepared by melting‐blend with a single‐screw extruder. Mechanical properties of the nanocomposites and the dispersion state of CaCO3 particles in ABS matrix were investigated. The results showed that in CaCO3/EVA/ABS nanocomposites, CaCO3 nanoparticles could increase flexural modulus of the composites and maintain or increase their impact strength for a certain nano‐CaCO3 loading range. The tensile strength of the nanocomposites, however, was appreciably decreased by adding CaCO3 nanoparticles. The microstructure of neat ABS, CaCO3/ABS nanocomposites, and CaCO3/EVA/ABS nanocomposites was observed by scanning electron microscopy. It can be found that CaCO3 nanoparticles were well‐dispersed in ABS matrix at nanoscale. The morphology of the fracture surfaces of the nanocomposites revealed that when CaCO3/EVA/ABS nanocomposites were exposed to external force, nano‐CaCO3 particles initiated and terminated crazing (silver streak), which can absorb more impact energy than neat ABS. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | nano‐CaCO3 EVA acrylonitrile‐butadiene‐styrene masterbatch mechanical properties |
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