Phoslite B631C a new Flame Retardant for Very Low halogen PP complying with UL 94 V2.
Phoslite B631C additive flame retardant is a very effective solution for flameproofing Polyolefins (PP homo- and co-polymer, TPO and HDPE). It is a synergistic flame retardant system based on Phosphorus and Bromine for use in Polyolefins.
PP homo-polymer: typically Phoslite B631C additive is used at concentration of around 1% to provide flame retardancy (UL 94 V2 at 1.6 mm and 3.2 mm) to PP. This formulation shows the following results: LOI around 27, GWFI at 960°C (both at 3.2 and 1.6 mm) and GWIT at 750°C at 3.2 mm and 825°C at 1.6 mm.
Thanks to its very fine particle size, Phoslite B631C can be successfully used for flame-retarding PP films.
Phoslite B631C additive is used at concentration of around 1% in 30% glass fiber reinforced compounds and around 2% in homo-PP 20% talc filled to provide flame retardancy at UL 94 V2 level for thicknesses of 1.6 mm and 3.2 mm.
PP co-polymer: typically Phoslite B631C additive is used at concentration of around 2% to provide flame retardancy (UL 94 V2 at 1.6 mm and 3.2 mm) to PP.
The very low dosage allows to manufacture V2 compounds with a percentage of bromine around 0.1% in PP homo, so than in some markets, the final compound can be considered as halogen free.
TPO: Phoslite B631C is used at 2.5%-3% in combination with Adflex Q100F/Hifax CA10A to obtain a classification UL-94 V2 at 3.2mm e 1.6mm.
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