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通过超声波和痕迹添加剂辅助促进HMX的多态结晶

Jie Li¹, Shichun Li², Shiliang Huang²

¹Institute of Chemical Materials, China Academy of Engineering and Physics, Mian Yang 621900, China; School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100083, China.

Ultrasonics sonochemistry

|June 9, 2024

概括

研究人员开发了一种使用超声波照射和H+添加剂的方法,以控制低敏感性八-1,3,4,7-四-1,3,5,7-四素 (HMX) 的结晶. 这种方法优化了粒子大小和纯度,用于增强的HMX应用.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
结晶科学结晶科学

背景情况:

低灵敏度的八-1,3,4,7-四-1,3,5,7-四素 (HMX) 是可取的,但由于转移性阿尔法相的特性,其结晶具有挑战性.
现有的方法,如超声波照射,往往导致小颗粒大小和不一致的分布,限制HMX的适用性.
控制HMX多态转化对于生产高质量,低灵敏度的能量材料至关重要.

研究的目的:

研究一种结合超声波照射和H+添加剂的新方法,用于控制的HMX结晶.
了解H+添加剂和超声波照射对HMX多态转换动学的影响.
为了生产低灵敏度的HMX,具有所需的颗粒大小分布,高纯度和最小的缺陷.

主要方法:

研究了微量H+添加剂对HMX多态转化障碍和动力学的影响.
组合H+添加剂与短期超声波照射,以促进β-HMX核和生长.
分析了所得到的HMX晶体的纯度,颗粒大小,密度和内部缺陷.

主要成果:

H+添加剂修改了转化障碍,减少了转移稳定的α相的驱动力,并显著加快了β-HMX核和生长.
添加H+和超声波照射的结合方法大大缩短了多态转变的持续时间 (近20个数量级).
制造出低灵敏度的HMX晶体,平均尺寸从20到340微米,纯度>99.6%,密度>1.8994g/cm3,缺陷很少.

结论:

H+添加剂和超声波照射的协同效应可以有效地控制HMX多态转换.
这种合理的方法使得生产高质量,低灵敏度的HMX能够满足严格的应用要求.
这些发现为控制使用添加剂和能源的复杂多态转换提供了洞察力.

关键词:

高固度和粘度的高固度和粘度.多态转换的持续时间和路径.微量添加剂微量添加剂超声波辐射辐射的超声波辐射.

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