How is ammonium polyphosphate working in Polypropylene( PP)?
Polypropylene (PP) is a widely used thermoplastic material, known for its excellent mechanical properties, chemical resistance, and heat resistance. However, PP is flammable, which limits its applications in some fields. To address this issue, the incorporation of ammonium polyphosphate (APP) as a flame retardant in PP has been extensively studied.
Ammonium polyphosphate, a type of intumescent flame retardant, is added to PP to improve its fire resistance. When PP with APP is exposed to high temperatures during a fire, the ammonium polyphosphate decomposes and releases ammonia, which dilutes the concentration of flammable gases produced during combustion. This process reduces the potential for combustion and slows down the spread of flames.
Furthermore, the char-forming ability of ammonium polyphosphate helps to form a stable and protective char layer on the surface of the PP material when it is exposed to heat or flame. This char layer acts as a barrier, insulating the underlying PP from the heat and reducing the release of flammable gases, thereby enhancing the fire-retardant properties of the PP material.
In summary, the addition of ammonium polyphosphate to PP not only reduces the flammability of the material by diluting flammable gases but also promotes the formation of a protective char layer, thus improving the overall fire resistance of PP plastics. This makes PP with ammonium polyphosphate a desirable option for applications where fire safety is of utmost importance.
Taifeng Flame retardant TF-241 is blend APP II has a high flame retardant performance in PP and HDPE.
Shifang Taifeng New Flame Retardant Co.,Ltd
Contact: Emma Chen
Email: sales1@taifeng-fr.com
Tel/What’sapp:+86 13518188627
Post time: Dec-22-2023
