单分散，高能释放，核/壳结构Al纳米粉的制备及其在HTPB推进剂中作为助燃剂的应用。,Scientific Reports

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单分散，高能释放，核/壳结构Al纳米粉的制备及其在HTPB推进剂中作为助燃剂的应用。
Scientific Reports ( IF 3.8 ) Pub Date : 2017-07-12 , DOI: 10.1038/s41598-017-05599-0
Fengyi Wang , Zhiguo Wu , Xushui Shangguan , Yunqiang Sun , Juanjuan Feng , Zhongyou Li , Luyang Chen , Shiyong Zuo , Renfu Zhuo , Pengxun Yan

通过高能离子束蒸发（HEIBE）大量生产了单分散，球形和核/壳结构的铝纳米粉（ANP）。并且，ANP的数加权平均粒径为98.9nm，具有氧化铝壳（3-5nm）。得益于钝化处理，ANP的摩擦，冲击和静电火花敏感性几乎与铝微粉相当。TG-DSC的结果指示空中航行计划的活性铝含量为87.14％，焓释放值是20.37千焦/克，比热释放š ₁ /的Δm ₁ *（392-611℃），确定的能量的能力释放为19.95 kJ / g。和S的值₁ /的Δm ₁*是与其他物理方法产生的ANP相比最高的值。此外，ANP与3重量％的羟基封端的聚丁二烯（HTPB）完全相容。在HTPB推进剂替代的微米铝粉中使用了％的ANP，在3-12 MPa压力范围内提高了燃烧速率，在3-16 MPa压力范围内将压力指数降低了31％以上。具有良好性能的ANP的生产技术将极大地促进ANP在高能材料领域的应用，例如推进剂，炸药和烟火技术。

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Preparation of mono-dispersed, high energy release, core/shell structure Al nanopowders and their application in HTPB propellant as combustion enhancers.

Mono-dispersed, spherical and core/shell structure aluminum nanopowders (ANPs) were produced massively by high energy ion beam evaporation (HEIBE). And the number weighted average particle size of the ANPs is 98.9 nm, with an alumina shell (3-5 nm). Benefiting from the passivation treatment, the friction, impact and electrostatic spark sensitivity of the ANPs are almost equivalent to those of aluminum micro powders. The result of TG-DSC indicates the active aluminum content of ANPs is 87.14%, the enthalpy release value is 20.37 kJ/g, the specific heat release S ₁/Δm ₁* (392-611 °C) which determined the ability of energy release is 19.95 kJ/g. And the value of S ₁/Δm ₁* is the highest compared with ANPs produced by other physical methods. Besides, the ANPs perfectly compatible with hydroxyl-terminated polybutadiene (HTPB), 3 wt. % of ANPs were used in HTPB propellant replaced micron aluminum powders, and improved the burning rate in the 3-12 MPa pressure range and reduced the pressure exponential by more than 31% in the 3-16 MPa pressure range. The production technology of ANPs with excellent properties will greatly promote the application of ANPs in the field of energetic materials such as propellant, explosive and pyrotechnics.

更新日期：2017-07-13

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