Synergistic Flame Retardant Effect of Intumescent Flame Retardant in PP

Synergistic Flame Retardant Effect of Intumescent Flame Retardant in PP

Yinsu company prepared expanded flame retardant polypropylene composites by melt mixing method, studied their thermal stability and flame retardant properties, and combined with high-resolution electron microscopy and Raman spectroscopy analysis of carbonized products, initially explored the mechanism of the synergistic flame retardant effect. The results showed that the addition of OZrP could not only promote the carbonization of polypropylene itself during the combustion process and the formation of graphite structure to improve the fire resistance of the polymer, but also play a synergistic role of fire resistance in the flame retardant Polypropylene system. Combustible material with the appearance of white solid powder. PP, PAPP, IFR and CFA used by Yinsu company are dried at 100 ℃ for more than 12 hours, then mixed in a certain proportion, melted and mixed with a small compactor under certain temperature conditions, and finally pressed on the flat vulcanizer for use.

According to the nature and composition, phosphorus flame retardants can be divided into inorganic flame retardants and organic flame retardants. Among them, inorganic flame retardants are red phosphorus, ammonium polyphosphate (APP), etc. Organic flame retardants are mainly phosphate, phosphonate, phosphine oxide, phosphite, etc., and there are more types and derivatives. Zirconium phosphate (ZrP) is an inorganic non-metallic material with high thermal and chemical stability, which can be used as an effective expansion agent for intumescent flame retardant (IFR) and carbon forming agent (CFA) to improve the thermal stability of polypropylene. Flame retardant performance ZrP is currently the most widely used inorganic flame retardant in intumescent flame retardants.

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