The polymerization conditions of ammonium polyphosphate(APP) were studied by microwave reactor and muffle furnace respectively with ammonium dihydrogen phosphate and urea as raw materials.
以磷酸二氢铵和尿素为原料，用微波反应器和马弗炉分别研究聚磷酸铵（APP）的聚合工艺条件。
BL-environmental friendly flame retardant belongs to N-P flame retardant series, and its main raw materials are phosphoric acid and urea the same as ammonium polyphosphate (APP).
BL -环保阻燃剂属于N - P系阻燃剂，其主要原料与聚磷酸铵一样是磷酸与尿素，但因为其特殊的合成工艺使它不同于普通的聚磷酸铵。
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