硝酸镍改性氢氧化铝阻燃聚丙烯的研究

Study on Aluminum Hydroxide Flame Retardant Polypropylene Modified by Nickel Nitrate

在氢氧化铝阻燃聚丙烯体系中引入过渡金属盐硝酸镍作为协效催化剂,研究了硝酸镍改性氢氧化铝阻燃体系对材料热分解行为、燃烧性能的影响。结果表明:硝酸镍协效催化剂可使材料的氧指数提高到32.5%,达到UL 94V-0级,氢氧化铝表面负载硝酸镍改性使材料的热释放速率、总热释放量明显下降,火灾危险性大幅降低。

In this paper,nickel nitrate used as a synergistic catalyst was introduced into aluminum hydroxide flame-retarded polypropylene system to study the effect of modified aluminum hydroxide flameretardant system on the thermal decomposition behavior and combustion performance of the material.The results show that nickel nitrate synergistic catalyst can increase the oxygen index of the material to 32.5% and reach UL 94 V-0.Modification of aluminium hydroxide with nickel nitrate on the surface of the material can significantly reduce the heat release rate and total heat release,and greatly reduce the fire risk.