Weather-resistant and flame-retardant SAS/PC alloy material as well as preparation method and application thereof

The invention discloses a weather-resistant and flame-retardant SAS/PC alloy material, and relates to the technical field of high polymer composite materials. The SAS/PC alloy material comprises the following components: polycarbonate, SAS resin, a toughening agent and a phosphazene flame retardant. By adding a proper amount of SAS resin, the flexibility of molecular chain segments of a system is improved, so that the material has better stress cracking resistance, and meanwhile, the weather resistance of the PC material can be improved by adding the SAS resin. 本发明公开了一种耐候阻燃的SAS/PC合金材料，涉及高聚物复合材料技术领域。该SAS/PC合金材料包括如下组分：聚碳酸酯、SAS树脂、增韧剂和磷腈阻燃剂。本发明通过加入适量的SAS树脂增加体系的分子链段柔顺性，使得材料拥有更好的抗应力开裂的能力，同时SAS树脂的加入还可以提升PC材料的耐候性。