GAP/BPS交联体包覆球形ADN颗粒

Coating of Spherical ADN Particles by GAP/BPS Crosslinked Polymers

为了克服二硝酰胺铵(ADN)和异氰酸酯类固化剂不相容的问题,以聚叠氮缩水甘油醚(GAP)/丁二酸二丙炔醇酯(BPS)交联体为包覆材料,通过1,3-偶极加成环化反应对球形ADN颗粒进行了交联固化包覆研究。采用扫描电镜能谱仪(EDS)和动态吸湿性分析法分析了ADN包覆后的表面元素组成和吸湿性,结果表明,与GAP/六亚甲基二异氰酸酯缩二脲固化剂(N-100)交联体相比,GAP/BPS交联体不仅与ADN相容性较好,还可获得较好的包覆效果,包覆后ADN的饱和吸湿率仅为0.78%。

To overcome the incompatible problem of ammonnium dinitramide（ADN）and the isocyanates curing agents,the curing coating research of spherical ADN particles were carried out usinng glycidyl azide polymer（GAP）/bis-propargyl-succinate（BPS）crosslinked polymers as a coating material via 1,3dipolar cycloaddition reaction.The surface element composition and hygroscopicity of the coated ADN-prills were investigated by scanning electron microscopy with energy dispersive spectrometer（EDS）and dynamic hygroscopic analytical method respectively.Results show that compared with the GAP/hexamethylene diisocyanate biuret curing agent（N-100）crosslinked polymers,the GAP/BPS crosslinked polymers exhibited better compatibility and coating effect with ADN,and the saturated hygroscopicity of coated ADN is only 0.78%.