...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Energetic Materials >Preparation and Safety of Well-Dispersed RDX Particles Coated with Cured HTPB
【24h】

Preparation and Safety of Well-Dispersed RDX Particles Coated with Cured HTPB

机译：固化HTPB包覆的分散良好的RDX颗粒的制备及安全性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

HTPB/IPDI (hydroxyl terminated polybutadiene & Isophorone diisocyanate) and TNT (2,4,6-trinitrotoluene) were successively coated on RDX (hexogen) particles by solvent evaporation and aqueous slurry melting, respectively. When HTPB coated on RDX particles cured completely, TNT was removed by solvent dissolution and the well-dispersed RDX particles coated with cured HTPB were obtained successfully. SEM (scanning electron microscopy), TEM (transmission electron microscopy), XPS (X-ray photoelectron spectrometry), and laser granularity measurement were employed to characterize the coated samples, and the mechanical sensitivity and thermal stability were measured and analyzed. Results show that TNT on the outer layer effectively hinders the adhesion among the particles resulting from the curing of inner layer (i.e., HTPB and IPDI). The final coating particles disperse well and their mechanical sensitivity decreases significantly. When the covering amount of HTPB is 2 wt.%, drop height (H_(50)) of RDX increases from 37.2 to 66.5 cm and explosion probability (P) decreases from 92 to 16%. Compared with that of uncoated samples, the activation energy and self-ignition temperature of coated samples do not vary.
机译：分别通过溶剂蒸发和含水浆液熔融将HTPB / IPDI（羟基封端的聚丁二烯和异佛尔酮二异氰酸酯）和TNT（2,4,6-三硝基甲苯）依次涂覆在RDX（己基）颗粒上。当涂覆在RDX颗粒上的HTPB完全固化时，通过溶剂溶解除去TNT，并成功获得涂覆有固化HTPB的分散良好的RDX颗粒。使用SEM（扫描电子显微镜），TEM（透射电子显微镜），XPS（X射线光电子能谱）和激光粒度测量来表征涂层样品，并测量和分析机械灵敏度和热稳定性。结果表明，在外层上的TNT有效地阻碍了由内层（即HTPB和IPDI）的固化所导致的颗粒之间的粘附。最终的涂料颗粒分散良好，其机械灵敏度显着降低。当HTPB的覆盖量为2wt。％时，RDX的液滴高度（H_（50））从37.2cm增加到66.5cm，爆炸概率（P）从92％减小到16％。与未涂层样品相比，涂层样品的活化能和自燃温度没有变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号