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2004•Journal of Hebei UniversityRequires access

Synergistion of Zinc Oxide in Intumescent Flame Retardant Polypropylene

Jianzhong Xu

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Abstract

The role of zinc oxide (ZnO) in ammonium polyphosphate-based intumescent flame retarded (IFR) polypropylene (PP) was studied by limiting oxygen index (LOI), thermal analysis (DTA-TGA) and infrared spectrum (FTIR). The result showed that zinc oxide could be used as synergist to improve the flame retardance of PP/APP/PER. The LOI of the flame retardant PP/APP/PER with ZnO increased compared with those without ZnO. The TGA, DTA and FTIR results confirmed that zinc oxide could catalyze the esterification and the char information and improve the thermal stability of the residual char.

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What this paper is about

The role of zinc oxide (ZnO) in ammonium polyphosphate-based intumescent flame retarded (IFR) polypropylene (PP) was studied by limiting oxygen index (LOI), thermal analysis (DTA-TGA) and infrared spectrum (FTIR). The result showed that zinc oxide could be used as synergist to improve the flame retardance of PP/APP/PER. The LOI of the flame retardant PP/APP/PER with ZnO increased compared with those without ZnO. The TGA, DTA and FTIR results confirmed that zinc oxide could catalyze the esterification and the char information and improve the thermal stability of the residual char.

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Available abstract

The role of zinc oxide (ZnO) in ammonium polyphosphate-based intumescent flame retarded (IFR) polypropylene (PP) was studied by limiting oxygen index (LOI), thermal analysis (DTA-TGA) and infrared spectrum (FTIR). The result showed that zinc oxide could be used as synergist to improve the flame retardance of PP/APP/PER. The LOI of the flame retardant PP/APP/PER with ZnO increased compared with those without ZnO. The TGA, DTA and FTIR results confirmed that zinc oxide could catalyze the esterification and the char information and improve the thermal stability of the residual char.

Key concepts: Intumescent, Ammonium polyphosphate, Limiting oxygen index, Char, Polypropylene, Fire retardant, Zinc, Thermal stability

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