Article
Engineering, Environmental
Ekaterina K. Kosareva, Mikhail N. Zharkov, Dmitry B. Meerov, Radmir V. Gainutdinov, Igor V. Fomenkov, Sergei G. Zlotin, Alla N. Pivkina, Ilya Kuchurov, Nikita Muravyev
Summary: The study demonstrates that HMX composites fabricated using the supercritical CO2-based anti-solvent method can significantly improve friction sensitivity and impact resistance, while also enhancing flowability. This approach allows for the safe and convenient preparation of high-energy material powders containing polymer additives in low concentrations.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Yong Kou, Peng Luo, Lei Xiao, Yanping Xin, Guangpu Zhang, Yubing Hu, Hongxu Gao, Fengqi Zhao, Wei Jiang, Gazi Hao
Summary: Quantitative analysis of the dispersion of nanomaterials has always been a challenge. This study successfully established a difference equation based on the UV absorbance difference of nanocatalytic materials, which is capable of quantifying the dispersion of nano-Fe2O3 in composites.
DALTON TRANSACTIONS
(2023)
Review
Engineering, Environmental
Binbin Huang, Zhihua Xue, Xiaolong Fu, Qi-Long Yan
Summary: In the field of energetic materials, achieving a balance between energy density and safety remains a challenging task. Coating and intercalation have been found to be the best and most widely used methods, as they are both safe and cost-effective, with well-controlled procedures.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Hai-jiao Xue, Yan-qing Wu, Kun Yang, Yi Wu
Summary: The damage and ignition behaviors of polymer-bonded explosive (PBX) under a coupled impact and high-temperature loading condition were investigated. An improved model was developed to describe the thermal effects of deformation, damage, and ignition responses of PBXs. The study showed that temperature affects the impact-shear sensitivity of HMX-based PBXs, and the predicted values were consistent with experimental data.
DEFENCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Dana O'Connor, Imanuel Bier, Rithwik Tom, Anna M. Hiszpanski, Brad A. Steele, Noa Marom
Summary: Crystal structure prediction (CSP) using the genetic algorithm GAtor and its associated random structure generator Genarris successfully generated the experimental structures for the energetic materials LLM-105 and α-RDX as well as the α and β conformational polymorphs of HMX. The symmetric crossover scheme in GAtor, where space group symmetries of parent structures are inherited by offspring, proved to be particularly effective. However, conducting multiple GA runs with different settings is still important for diverse sampling of the potential energy surface. CSP is a useful tool for studying the polymorphism of energetic materials and has potential as an integral part of the development pipeline.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Yiwen Xiao, Lang Chen, Kun Yang, Jianying Lu, Junying Wu
Summary: A quantum-based molecular dynamics technique was used to investigate the reaction mechanism of CL-20/HA under high pressure. The study revealed that structural changes caused by HA insertion and charge overlap between CL-20 and HA resulted in the breaking of the C-N bond and the release of nitro and nitrous oxide at high temperatures and pressures.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Zikangping Wang, Kunyu Xiong, Zhi-Hua Xue, Qi-Long Yan
Summary: This study investigates the crystal growth of hybrid HMX crystals guided by functionalized carbon nanotubes (F-CNTs) as nucleation centers. The findings demonstrate that the functionalized CNTs can improve the thermal stability, sensitivity, and impact initiation energy of the HMX crystals.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Polymer Science
Minghui Xu, Xianming Lu, Ning Liu, Qian Zhang, Hongchang Mo, Zhongxue Ge
Summary: The synthesized PBFMO-b-GAP energetic copolyurethane binder shows promising mechanical properties and thermal decomposition resistance in solid propellant formulations, indicating its potential as a future energetic binder.
Article
Thermodynamics
Andrey Pereverzev, Tommy Sewell
Summary: The Green-Kubo and Helfand moment approaches were used to obtain the thermal conductivity tensor of beta-HMX from MD simulations. The Green-Kubo formula showed slow convergence, but a numerical procedure involving heat current filtering was developed to improve convergence. The Helfand moment approach yielded similar results.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Ceramics
Wenjie Li, Yuncong Jiang, Hang Liu, Chen Wang, Xiaodong He, Fei He, Mingwei Li
Summary: Fractal models have been used effectively to predict the thermal conductivity of porous materials. In this study, hierarchical porous materials consisting of mullite fibers/whiskers (MFWs) were prepared using in-situ growth method. The fractal dimension was determined by calculating the microstructure photo and fractal theory was utilized to establish improved Sierpinski carpet models. The models were then converted into electrical fractal patterns to solve the iterative formulas for effective thermal conductivity and porosity. The results showed a gradual decrease in thermal conductivity with increasing porosity. The size and spatial distribution of pores significantly affected the effective thermal conductivity, with larger and non-uniformly distributed pores leading to higher thermal conductivity.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Multidisciplinary
Yue-qi Li, Heng Zhai, Ping Ye, Xing-quan Zhang, Chang-ping Guo
Summary: Inspired by superhydrophobic plants and animals in nature, HMX@CS core-shell composites with similar properties were successfully prepared. The composites exhibited good compatibility and buffering performance, as well as excellent hydrophobic and oleophilic properties, providing a new approach for the development of multifunctional energetic materials.
DEFENCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yongxing Tang, Ziwei An, Ajay Kumar Chinnam, Richard J. Staples, Jean'ne M. Shreeve
Summary: 3,6-Diamino-1H-[1,2,4]triazolo[4,3-b][1,2,4]triazole and its energetic salts were designed and synthesized based on a fused-triazole backbone with superior thermostability. The compounds exhibit high thermal stability and promising potential as building blocks for very thermally stable energetic materials.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Yun-Fan Yan, Hui-Fang Wu, Jian-Gang Xu, Fa-Kun Zheng, Guo-Cong Guo
Summary: The study successfully synthesized a solvent-free energetic coordination polymer in alkaline solution through a simple hydrothermal reaction, which demonstrates high enthalpy of formation and decomposition temperature, low mechanical sensitivity, and potential application in insensitive energetic materials.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zijian Li, Xu Zhao, Feiyan Gong, Congmei Lin, Yu Liu, Zhijian Yang, Qilong Yan, Fude Nie
Summary: This study demonstrates a novel coating strategy for HMX crystals via in situ copolymerization of catechol and amino functionalized monomers, improving phase-transition stability and reducing sensitivity while enhancing mechanical strength.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Ling Chen, Qiang Li, Xijin Wang, Jianwei Zhang, Guozhen Xu, Xiang Cao, Jie Liu, Fengqiang Nan, Weidong He
Summary: In this paper, a novel nanocomposite energetic material RDX@NGEC was successfully synthesized using electrostatic spraying technology, and its thermal decomposition properties and sensitivity were systematically investigated. The results showed that NGEC was uniformly coated on the surface of RDX, resulting in a significant reduction in particle size and sensitivity. Therefore, this novel nanocomposite energetic material holds potential applications in propellants and explosives.
CHEMICAL ENGINEERING JOURNAL
(2022)