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Flame-retardant olefin block copolymer composites with novel halogen-free intumescent flame retardants based on the composition of melamine phosphate and pentaerythritol

Authors

  • Zinan Zhang,

    1. Shanghai Key Lab of Polymer Dielectrics, Department of Polymer Science and Engineering, Advanced Rheology Institute, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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  • Bin Lin,

    1. Shanghai Key Lab of Polymer Dielectrics, Department of Polymer Science and Engineering, Advanced Rheology Institute, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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  • Ning Zhou,

    1. Shanghai Key Lab of Polymer Dielectrics, Department of Polymer Science and Engineering, Advanced Rheology Institute, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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  • Fengyuan Yu,

    1. Shanghai Key Lab of Polymer Dielectrics, Department of Polymer Science and Engineering, Advanced Rheology Institute, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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  • Hongbin Zhang

    Corresponding author
    1. Shanghai Key Lab of Polymer Dielectrics, Department of Polymer Science and Engineering, Advanced Rheology Institute, School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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ABSTRACT

A series of halogen-free intumescent flame retardants (IFR) based on home-made melamine phosphate and pentaerythritol system (MPPER) including polyamid 12, basic nickel carbonate (NiCO3·2Ni(OH)2·4H2O), lanthanum oxide (La2O3), and expandable graphite compounding with MPPER, were adopted for flame retarding olefin block copolymers (OBC). Flame-retardant effects and thermal stabilities of OBC-IFR composites were investigated by limiting oxygen index, vertical burning test (UL-94), and thermogravimetry analysis along with the analysis of morphological structures of the char residue by scanning electron microscopy. The mechanical properties and the flame-retardant mechanism of the final composited materials have been also discussed. The loading of suitable amount of IFR can improve effectively the flame retardancy of the OBC with tolerable decrease in mechanical properties. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40066.

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