Abstract: A polyurea-chlorocyclophosphazene microcapsule flame retardant was prepared by interfacial polymerization with 2,4-toluene diisocyanate (TDI) and hexanediamine as the raw materials. Thermogravimetric analysis (TGA) test showed that the thermal decomposition temperature of chlorocyclophosphazene microcapsule steeply rose up as compared with chlorocyclophosphazene. Chlorocyclophosphazene microcapsule had better flame retardancy and smoke suppression than chlorocyclophosphazene when used with polypropylene(PP). Mechanical properties of chlorocyclophosphazene microencapsule/PP composites were superior to those of chlorocyclophosphazene/PP.

摘要： 以甲苯2，4-二异氰酸酯和己二胺为原料，采用界面聚合法，制备了囊心为环状氯化磷腈、囊壁为聚脲的微胶囊阻燃剂。热重分析表明：微胶囊阻燃剂的热分解温度比环状氯化磷腈大大提高。将所制微胶囊阻燃剂应用于聚丙烯，阻燃、抑烟效果优于环状氯化磷腈，且聚丙烯/环状氯化磷腈微胶囊复合材料的力学性能大大优于聚丙烯/环状氯化磷腈材料的性能。