聚磷酸铵(APP)是一种高效的无卤阻燃剂,对其进行改性能有效降低其水溶性,提高在潮湿环境下的抗溶出性能,改善与高分子材料的相容性,扩大应用范围。从偶联剂改性、微胶囊化、表面活性剂改性以及复合改性等方面介绍了APP的改性应用研究进展,指出了其今后的发展趋势。 Ammonium polyphosphate (APP) is a highly effective halogen-free flame retardant that can be modified to effectively reduce its water solubility, improve its anti-leaching performance under humid conditions, improve its compatibility with polymer materials and expand its application range. This paper introduces the research progress of modification application of APP from modification of coupling agent, microencapsulation, modification of surfactant and compound modification, and points out its future development trend.