Preparation of TATB/HMX-based Composite Microspheres by Pickering Emulsion Polymerization Method

被引：0
作者：
Hou C.-H. [1 ]
Ma J.-J. [1 ]
Li P.-Y. [2 ]
Wang J.-Y. [1 ]
Jia X.-R. [1 ]
Xu Y.-Q. [1 ]
Zheng X.-M. [3 ]
机构：
[1] School of Environment and Safety Engineering, North University of China, Taiyuan
[2] Mechanical and Electrical College, Handan University, Hebei, Handan
[3] Heilongjiang North Tool Co. Ltd., Mudanjiang, Heilongjiang
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2024年 / 47卷 / 02期
关键词：
GO; HMX; physical chemistry; Pickering emulsion polymerization; TATB;
D O I：
10.14077/j.issn.1007-7812.202305006
中图分类号：
学科分类号：
摘要：
To enhance the safety and application performance of HMX, two kinds of TATB/HMX-based composite particles were prepared using Pickering emulsion polymerization method with solid particles of graphene oxide (GO) as stabilizer and polyvinyl acetate (PVAc) and polystyrene (PSt) as binder. The prepared composite particles were characterized using scanning electron microscopy (SEM), X-ray diffractometer (XRD), differential scanning calorimetry (DSC), X-ray photoelectron spectroscopy (XPS), and the impact sensitivity and friction sensitivity were tested. The results showed that the TATB/HMX-based composite particles are spherical particles with uniform and dense surface, and the crystal types of HMX and TATB unchange. Compared with HMX raw materials, the apparent activation energy (a) of the composite particles is increased, where that the E of TATB/HMX/PVAc/GO composite particles is increased by 44. 18kJ/mol and the a of TATB/HMX/PSt/GO is increased by 40. 5kJ/mol. Impact sensitivity and friction sensitivity are significantly reduced. The PVAc as the binder is more suitable for the composite particles. The critical impact energy is increased from 5. 5 J to 60J, and the critical friction pressure is increased from 128N to 324N. The thermal safety and mechanical safety of the prepared composite microspheres are greatly improved. © 2024 China Ordnance Industry Corporation. All rights reserved.
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页码：145 / 151
页数：6
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