Preparation and Reactivity Properties of Embedded-Coated AlH3 Energetic Composite Particles

被引：0

作者：

Yu M.-H. ^{[1
]}

Zhang H.-R. ^{[1
]}

Xie W.-X. ^{[2
]}

Li Y.-J. ^{[2
]}

Nie H.-Q. ^{[1
]}

Yan Q.-L. ^{[1
]}

机构：

[1] Science and Technology on Combustion, Internal Flow and Thermo‑structure Laboratory, Northwestern Polytechnical University, Xi′an

[2] Xi′an Modern Chemistry Research Institute, Xi′an

来源：

Hanneng Cailiao/Chinese Journal of Energetic Materials | 2023年 / 31卷 / 09期

基金：

中国国家自然科学基金;

关键词：

acoustic resonance technology; aluminum hydride（AlH[!sub]3[!/sub]）; condensed combustion product; spray drying technology; thermal reactivity properties; vacuum stability properties;

D O I：

10.11943/CJEM2023096

中图分类号：

学科分类号：

摘要：

To improve the stability of aluminum hydride（AlH3），three kinds of embedded-coated AlH3@Al@xAP（AHAPs）energetic composite particles were prepared by the combination of using acoustic resonance and spray drying technology. The mass ratios of AlH3@Al and AP were 9∶1（AHAPs-10%），7∶3（AHAPs-30%），and 1∶1（AHAPs-50%），respectively. The morphologies and structures of the AHAPs and their condensed combustion products were characterized by SEM，EDS，and XRD. The thermal reactivity and stability of the prepared samples were comparatively studied by TG-DSC analysis and vacuum stability tester （VST）. Results show that AHAPs energetic composite particles could not only improve the stability of AlH3 but also promote the decomposition of AP. With the increase of AP content，the initial decomposition temperatures of AlH3 are increased by 8.5-11 ℃，and the peak temperature at high-temperature decomposition stage of AP is decreased by about 80 ℃. Compared with the total decomposition time of pure AlH3（1006 min），the decomposition time of AHAPs-50% composite particles extend to 1518 min，which corresponds to a 50.9% increment. In addition，the reaction heat of embedded-coated composite particles AlH3@Al/63.5% AP reaches 9125.6 J·g-1，which is 1054.1 J·g-1 higher than that of mechanically mixed samples，and the particle sizes of the condensed combustion products appear to be finer，indicating that their combustion become more complete and the combustion efficiency is greatly enhanced. © 2023 Institute of Chemical Materials, China Academy of Engineering Physics. All rights reserved.

引用

页码：887 / 894

页数：7

共 23 条

[1] PANG Ai-min, ZHENG Jian, Prospect of the research and development of high energy solid propellant technology［J］, Journal of Solid Rocket Technology, 27, 4, (2004)
[2] PANG Wei-qiang, FAN Xue-zhong, Application progress of metal fuels in solid propellants［J］, Chemical Propellants & Polymeric Materials, 7, 2, (2009)
[3] PANG Ai-min, ZHU Zhao-yang, XU Xing-xing, Recent progresses on synthesis and evaluation of AlH<sub>3</sub>［J］, Chinese Journal of Energetic Materials（Hanneng Cailiao）, 27, 4, pp. 317-325, (2019)
[4] Enhancing the stability and combustion of a nanofluid fuel with polydopamine-coated aluminum nanoparticles ［J］, Chemical Engineering Journal, (2021)
[5] YAN Q L, Et al., Unexpected burning rate independence of composite propellants on the pressure by fine interfacial control of fuel/oxidizer［J］, Chemical Engineering Journal, (2020)
[6] YAN Q L，, Et al., Tuning the reactivity of metastable intermixed composite n-Al/PTFE by polydopamine interfacial control, ACS Appl Mater Interfaces, 10, 38, pp. 32849-32858, (2018)
[7] Wen AO, Pei-jin LIU, Xiang LV, Et al., Review of aluminum agglomeration during the combustion of solid propellants［J］, Journal of Astronautics, 37, 4, (2016)
[8] YANG Yan-jing, ZHAO Feng-qi, YI Jian-hua, Et al., Applications of hydrogen-storage materials in high-energy solid rocket propellants［J］, Chinese Journal of Explosives & Propellants, 38, 2, pp. 8-14, (2015)
[9] ZHU Z Y, YAN Q L, Et al., Advanced preparation and processing techniques for high energy fuel AlH<sub>3</sub>［J］, Chemical Engineering Journal, 421, (2021)
[10] YOUNG G, CONNELL T L，, Et al., Combustion of HTPB based solid fuels containing metals and metal hydrides with nitrous oxide［J］, Propellants，Explosives，Pyrotechnics, 44, 6, pp. 744-750, (2019)

← 1 2 3 →