采用离子交换法制备精氨酸表面改性聚磷酸铵的复配阻燃剂，将其掺入聚乙烯中，制备聚乙烯复合材料，研究不同复配阻燃剂掺量对聚乙烯复合材料阻燃性能、热性能及力学性能等的影响。结果表明：复配阻燃剂精氨酸-聚磷酸铵的掺入有效改善了聚乙烯复合材料的阻燃性能，提升了其结晶度和热稳定性，在提升拉伸强度和弯曲强度的同时，也有效提升了复合材料的缺口冲击强度。当复配阻燃剂质量分数为20%时，聚乙烯复合材料的阻燃性能、力学性能及热性能等均达到最优。在此掺量下，聚乙烯复合材料的极限氧指数、氧化诱导时间分别较纯聚乙烯提升了31.42%和9.33%。

A compound flame retardant of arginine surface modified ammonium polyphosphate was prepared by ion exchange method, and it was incorporated into polyethylene to prepare polyethylene composites. The effects of different compound flame retardant dosages on the flame retardancy, thermal performance, and mechanical properties of polyethylene composites were studied. The results show that the addition of arginine ammonium polyphosphate, a compound flame retardant, effectively improves the flame retardancy of polyethylene composites, improves its crystallinity and thermal stability, and at the same time, effectively improves the notch impact strength of the composites while improving the tensile strength and bending strength. When the mass fraction of the compound flame retardant is 20%, the flame retardancy, mechanical properties, and thermal properties of the polyethylene composites reach the optimal level. At this dosage, the limited oxygen index and oxidation induction time of the polyethylene composites are increased by 31.42% and 9.33% compared to pure polyethylene, respectively.