Li Shuting, Li Min, Han Jinxi, Xia Zhengqiang, Chen Sanping, Xie Gang, Gao Shengli, Lu Jack Y, Yang Qi
Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, P. R. China.
Department of Chemistry, University of Houston-Clear Lake, 2700 Bay Area Blvd., Houston, TX 77058, USA.
Dalton Trans. 2023 Nov 28;52(46):17458-17469. doi: 10.1039/d3dt02686h.
In this work, using tri(5-aminotetrazolium)triazine (HTATT) as an energetic ligand, two new energetic complexes (ECs), Cu(HTATT)(HO) (EC-Cu1) and [Cu(TATT)(HO)] (EC-Cu2), have been synthesized under hydrothermal conditions. Their crystal structures, thermal decomposition behaviors and specific heat capacities were determined respectively. In addition, two ECs were combined with GO (graphene oxide) and an MXene (TiCT) respectively by an growth strategy to obtain four carbon nanomaterials/EC composites, which were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The effects of two ECs and four composites on the thermal decomposition of AP were studied by differential scanning calorimetry (DSC). Among them, the sample containing 8 wt% composite (GO/EC-Cu2) has the best promoting effect on AP, causing the high temperature decomposition peak to overlap with the low temperature decomposition peak of AP, reducing the decomposition peak temperature of AP from 443.6 °C to 308.9 °C, and the heat release is up to 4875 J g. Compared with ECs acting solely on AP, composite materials have stronger synergistic and promoting effects. This study provides a new example of the synthesis of carbon nanomaterial/EC composites and the improvement of the performance of AP-based solid propellants.
在本工作中，以三（5-氨基四唑）三嗪（HTATT）作为含能配体，在水热条件下合成了两种新型含能配合物（ECs），即Cu(HTATT)(HO)（EC-Cu1）和[Cu(TATT)(HO)]（EC-Cu2）。分别测定了它们的晶体结构、热分解行为和比热容。此外，通过一种生长策略将两种ECs分别与氧化石墨烯（GO）和一种MXene（TiCT）复合，得到了四种碳纳米材料/EC复合材料，通过扫描电子显微镜（SEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）对其进行了表征。采用差示扫描量热法（DSC）研究了两种ECs和四种复合材料对高氯酸铵（AP）热分解的影响。其中，含8 wt%复合材料（GO/EC-Cu2）的样品对AP具有最佳的促进作用，使高温分解峰与AP的低温分解峰重叠，将AP的分解峰温度从443.6℃降至308.9℃，热释放高达4875 J g。与仅作用于AP的ECs相比，复合材料具有更强的协同促进作用。本研究为碳纳米材料/EC复合材料的合成以及基于AP的固体推进剂性能的改善提供了一个新的实例。
