高效耐水无卤阻燃聚丙烯材料研究

Research on Efficient Waterpro of Halogen-free Flame Retardant Polypropylene

针对无卤膨胀阻燃剂的不足,使用新型三嗪类成炭剂PMTS和表面包覆聚磷酸铵(APP)复配,并辅以纳米蒙脱土作为协效剂,开发出新型高效、高耐水无卤膨胀阻燃剂及改性聚丙烯材料。研究了APP/PMTS配比、纳米协效剂、阻燃剂用量等对氧指数、UL94阻燃级别的影响;对比了APP+PMTS阻燃体系与市售无卤膨胀阻燃剂(IFR)在阻燃效率、物理性能、热分解性能及耐水性能的差异。结果表明,APP+PMTS阻燃体系具有优异的阻燃性能,同时其在物理性能、耐热、耐水性等方面都较传统IFR阻燃剂有大幅度的提高,从而拓宽了无卤阻燃聚丙烯的应用领域。

For the weakness of halogen free flame retardant, with the combination of triazine charring agent of PMTS and surface coated ammonium polyphosphate （APP）, nanomontmorillonite as a synergistic agent, a novel efficient waterproof halogen-free flame retardant polypropylene composite was developed. The effect of the proportion of APP/PMTS, the nanosynergistic agent and flame retardant amount on the UL94 flame retardant grade and limited oxygen index of PP were investigated. The differences of flame retardancy, mechanical properties, thermal decomposition and water resistance between the APP/PMTS flame retardant system and commercial intumescent flame retardant （IFR） products were compared. The results showed that APP/PMTS flame retardant system exhibited excellent flame retardancy. The mechanical properties, thermal decomposition and water resistance of APP/PMTS flame retardant polypropylene composite were significant improved compared to the commercial IFR products, which broadened the application field of halogen-free flame retardant polypropylene.