以不饱和聚酯为基体，联二脲、磷酸密胺盐、碳纤维为填料，制备了不饱和聚酯耐烧蚀复合材料，考察了填料质量、碳纤维长度对复合材料烧蚀性能和力学性能的影响。结果表明，（联二脲+磷酸密胺盐）复合物、碳纤维质量增加，复合材料耐烧蚀性能提高；碳纤维长度增加，对复合材料耐烧蚀性能提高作用更明显，但会影响加工性能。复合材料力学性能均随（联二脲+磷酸密胺盐）复合物和碳纤维质量的增加先增大后减小。当每100 g不饱和聚酯中（联二脲+磷酸密胺盐）复合物质量为30 g、4 mm碳纤维质量为3 g时，复合材料的综合性能最佳。用该配方作为推进剂包覆材料包覆某改性双基推进剂燃气发生器并进行发动机试验，燃气发生器工作正常，压力-时间曲线平稳。燃气发生器工作完成后包覆层残留壳体完整、残留率高。

Taking unsaturated polyester (UP) as matrix,and biurea,phosphate melamine salt and carbon fiber as fillers,UP ablation resistant composites are prepared.The influences of the content of filler and the length of carbon fiber on the ablation and mechanical properties of the prepared composites are investigated.The results indicate that the increase of both biurea/phosphate melamine salt complex content and carbon fiber content can improve the ablation resistance.With the increasing carbon fiber length,the ablation resistance of the composites is improved more obviously,but the processability is affected.The mechanical properties of the UP composites increases first decreases then with the increasing contents of both biurea/phosphate melamine salt complex and carbon fiber.UP composite,when the addition of biurea/phosphate melamine salt complex is 30 g,and the addition of 4 mm carbon fiber is 3 g per 100 g of UP,can obtain relative optimal comprehensive performance.This complex system is used as propellant coating material to coat a modified double-base propellant gas generator.In the engine test,the gas generator works normally and the pressure-time curve exhibits stable.After the work of the gas generator is completed,the residual shell of the coating layer remains intact,with a high residual rate.

吴淑新(1971-),女,本科,副研究员,研究方向为不饱和树脂包覆层,1354018326@qq.com