Toughening and reinforcement of rigid PVC with silicone rubber/nano-CACO3 shell-core structured fillers

Authors

  • Ling Yang,

    1. State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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  • Yuan Hu,

    Corresponding author
    1. State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
    • State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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  • Hong Guo,

    1. State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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  • Lei Song,

    1. State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
    2. Department of Chemistry, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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  • Zuyao Chen,

    1. Department of Chemistry, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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  • Weicheng Fan

    1. State Key Laboratory of Fire Science, University of Science and Technology of China, 230026 Anhui, People's Republic of China
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Abstract

To improve the mechanical properties and structure of poly(vinyl chloride) (PVC)/nano-CaCO3 nano composite, a core (nano-CaCO3)/shell (SR) structured filler (40–60 nm) was successfully prepared by refluxing methyl vinyl silicone rubber (SR) and nano-CaCO3 particles (coupling agent KH550, KH560, or NDZ-101 as interfacial modifier) in toluene with vigorous stirring, according to an encapsulation model. It is effective in rigid PVC composite's toughness and reinforcement. The interfacial modifier's structure and interaction of nanocomposites of PVC/SR/nano-CaCO3 were studied. The results indicate that KH560 has the optimal interfacial modificatory effect. The environmental scanning electron microscope (ESEM) study testified that PVC/SR/nano-CaCO3 nanocomposites had a typical rubber–plastics-toughening mechanism. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2560–2567, 2006

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