GAP/BPS交联体包覆球形ADN颗粒

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%。

Coating of Spherical ADN Particles by GAP/BPS Crosslinked Polymers

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 1,3 dipolar 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%.