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用热重法(TG)、氧指数、氧弹热值法研究了聚苯乙烯挤塑板(XPS)、橡塑海绵、聚氨酯3种有机保温材料的燃烧特性指数,热分解活化能等热解性能。橡塑海绵和聚氨酯有2个热解阶段,挤塑板只有1个热解阶段;橡塑海绵和挤塑板的燃烧特性指数P相差不大,而聚氨酯的燃烧特性指数P高出橡塑海绵和挤塑板1个数量级;聚氨酯的热解活化能最低。结果表明,3种样品中橡塑海绵的阻燃性能最好,聚氨酯阻燃性能最差。
The combustion index, thermal decomposition activation energy and other pyrolysis properties of polystyrene (XPS), rubber-plastic sponge and polyurethane were studied by thermogravimetry (TG), oxygen index and oxygen bomb calorific value method. performance. Rubber sponge and polyurethane have two pyrolysis stages, the extruded board has only one pyrolysis stage; the rubber-sponge and the extruded board have little difference in the combustion characteristic index P, while the polyurethane has a higher combustion index P than the rubber-sponge And extrusion board an order of magnitude; polyurethane pyrolysis activation energy minimum. The results show that the three samples of rubber sponge flame retardant performance of the best, the worst flame retardant polyurethane.