Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis of a Novel Phosphorus-containing Flame Retardant for Epoxy Resins

  • Xu, Hong-Jun (School of Chemical and Materials Engineering, Jilin Institute of Chemical Technology) ;
  • Jin, Fan-Long (School of Chemical and Materials Engineering, Jilin Institute of Chemical Technology) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University)
  • Published : 2009.11.20
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Abstract

In this study, a novel phosphorus-containing flame retardant copolymer of spirocyclic pentaerythritol di(phosphate monochloride) and bisphenol S (SPD-BS) was successfully synthesized and used as a flame retardant in diglycidyl ether of bisphenol A (DGEBA) epoxy resins. The chemical structure of the SPD-BS was characterized using FT-IR and $^1H$ NMR spectra. The thermal properties were investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The effects of SPD-BS and nano-$CaCO_3$ on the flame-retardant properties of DGEBA/SPD-BS systems were evaluated by measurement of the burning rate. As a result, the thermal stabilities of the DGEBA/SPD-BS systems were decreased with increasing SPD-BS content. The flame-retardant properties and char yields of the systems were significantly increased when SPD-BS content increased. The synergism of nano-$CaCO_3$ incorporation on flame retardancy was found for the DGEBA/SPD-BS systems.

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References

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