Preparation and Thermal Decomposition Characteristics of TKX-50/GO Composite Energetic Materials

被引：0
|
作者：
Wang H.-Y. [1 ]
Cao X. [1 ]
Wu J.-L. [1 ]
Xu Y.-B. [1 ]
Shang Y.-P. [1 ]
机构：
[1] School of Environment and Safety Engineering, North University of China, Taiyuan
来源：
| 1600年 / China Ordnance Industry Corporation卷 / 43期
关键词：
5; 5'-bistetrazole-1; 1'-diolate; Composite energetic material; Graphene oxide(GO); Network-like nanostructures; Physical chemistry; Thermal decomposition; TKX-50;
D O I：
10.14077/j.issn.1007-7812.201908021
中图分类号：
学科分类号：
摘要：
In order to study the thermal decomposition properties of 5, 5'-bistetrazole-1, 1'-diolate (TKX-50)/graphene oxide (GO) nano-composite energetic materials, liquid nitrogen-assisted spray freeze-drying method was used to prepare TKX-50/GO composite materials. The morphology, structure and surface element of the samples were characterized and analyzed by using the scanning electron microscopy-energy spectroscopy (SEM-EDS) and X-ray diffraction (XRD). The thermal decomposition properties of composites were analyzed by using the thermogravimetry-differential scanning calorimetry (TG-DSC). The apparent activation energy was calculated by using the Kissinger method. The results show that the TKX-50/GO composite prepared by liquid nitrogen-assisted freeze spray drying method has nano-scale layered network structure. Compared to the TKX-50, the first stage decomposition peak temperature of TKX-50/GO composite energetic material decreases by 12.0, 12.5 and 12.2℃, and the second stage decomposition peak temperature decreases by 12.5℃ and 16.4℃. With the increase of GO content, the decomposition peak in the second stage is not obvious, and the two decomposition stages of TKX-50/GO5 are overlapped. The apparent activation energy of the nano-composite materials increases from 146.2kJ/mol to 163.3, 168.5 and 172.9kJ/mol compared to the TKX-50, respectively. GO improves the activation energy barrier of the composite energetic material, decreases the decomposition peak temperature and shortens the reaction interval time, so the GO improves the energy release rates and promotes the thermal decomposition of TKX-50/GO composite materials. © 2020, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：631 / 635
页数：4
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