聚氨酯黏合剂包覆球形ADN的性能研究  

Properties of Prilled Ammonium Dinitramide (ADN) Coated by Polyurethane Binders

作　　者：胥会祥[1] 廖林泉[1] 刘愆[1] 李勇宏[1] 冉秀伦[1] 赵凤起[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《含能材料》2008年第6期712-715,共4页Chinese Journal of Energetic Materials

摘　　要：为降低球形二硝酰胺铵(ADN)的吸湿性,采用聚氨酯黏合剂对其进行包覆。用扫描电镜(SEM)和称重法分析了包覆后ADN的表面形貌和吸湿性,结果表明,聚氨酯黏合剂在ADN表面形成絮状的包覆膜,使包覆后ADN的吸湿率明显小于包覆前ADN,在相对湿度60%以下,包覆后ADN在空气中暴露30天时吸湿率仅0.136%,吸湿率不随时间增加。热分析和机械感度测试表明,聚氨酯黏合剂对ADN的熔点、分解峰温、分解热焓的影响较小,但使ADN的机械感度增加,包覆前后ADN的摩擦感度分别为30%和60%,撞击感度(H50)分别为30.5cm和27.8cm。The prilled ammonium dinitramide（ADN） was coated by polyurethane binders（PU）, for reducing it＇s hygroseopieity. The surface appearance and hygroscopieity of ADN after coating were analyzed by SEM and weighing method. Results show that a kind of floecule of PU is formed on the surface of ADN, which makes the hygroseopieity of ADN after coating less than that before coating evidently. When coated ADN is exposed in the atmosphere for 30 days with the RH less than 60% , the hygroseopieity of coated ADN is only 0. 136% and does not increase with the increasing of exposure time. The thermoanalysis and mechanical sensitivity test show that the PU has little effect on the melting point,decomposition peak and enthalpy of coated ADN,but makes the meehanieal sensitivity of ADN increase. Friction and impact sensitivity of ADN before and after coated are 30% ,60% ,30.5 cm,and 27.8 cm, respectively.

关 键 词：分析化学 包覆ADN 聚氨酯黏合剂 吸湿性 机械感度 

分 类 号：TJ763[兵器科学与技术—武器系统与运用工程]