构建高能纳米级酸复合材料,通过间隔氧化物提高火焰灵敏度
Long Li1, Zhenzhan Yan1, Wenchao Tong1
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, P. R. China.
Inorganic chemistry
|December 15, 2023
概括
研究人员开发了一种新的方法来制造含量高的纳米级酸 (LA) 复合材料. 这些先进材料为微启动装置提供了增强的安全性和引爆能力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 能量材料 能量材料
背景情况:
- 开发有效的方法来制备高含量改性纳米级酸 (LA) 复合材料对于微启动设备至关重要.
- 对于纳米-LA复合材料的现有方法通常涉及漫长的准备时间.
- 需要具有更好的安全性和爆炸性能的LA复合材料.
研究的目的:
- 设计和制造结构可控,高含量纳米级酸复合材料.
- 显著减少这些先进的能量材料的准备时间.
- 评估新开发的LA复合材料的安全性和爆炸性能.
主要方法:
- 设计了一种酸盐间接氧化前体,具有纳米尺度的半孔结构.
- 利用框架 (GAF) 方法的气固体亚化进行快速合成 (3小时内).
- 描述了由此产生的基于碳的酸 (LA/C) 和基于酸盐的酸 (LA/SA) 复合物.
主要成果:
- 成功合成了LA/C和LA/SA复合材料,纳米级LA与酸盐基或碳化骨相连.
- LA/C复合材料表现出优异的静电安全性 (E50 = 0.25 J) 和火焰敏感性 (H50 = 28 cm).
- 在LA/C中达到高达92.5%的LA含量,使CL-20在微启动装置中成功引爆.
结论:
- 该GAF方法提供了高含量纳米级LA复合材料的快速和有效的途径.
- 酸盐衍生碳材料的独特纳米结构和导电性有助于提高性能.
- 这项研究为开发具有高LA含量和针对能源应用量身定制的灵敏度的先进LA复合材料提供了一种新方法.
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