Article
Biochemistry & Molecular Biology
Huanan Wei, Tianpeng Li, Kai Yao, Zhaolong Xuan
Summary: ReaxFF molecular dynamics simulations were used to study the thermal decomposition property of RDX-based CMDB propellants. The simulations showed that the decomposition of RDX and RDX/HTPB/Al was primarily triggered by N-NO2 rupture, leading to different final products. The abundance of intermediate products generated by RDX/HTPB/Al was lower and the reactions were more complex. Additionally, the decomposition rate of RDX/HTPB/Al increased with increasing temperature.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Chemistry, Multidisciplinary
Wenzhe Ma, Yanjing Yang, Yuxin Jia, Dongxiao Fu, Fengqi Zhao, Kangzhen Xu
Summary: Metal organic complexes, such as Cu(Salen), show promising potential as combustion catalysts for solid rocket propellants. In this study, Cu(Salen) was investigated as a catalyst for HMX-CMDB propellants and was found to significantly enhance the combustion performance by improving burning rate and combustion efficiency, and reducing burning rate pressure index.
Article
Chemistry, Analytical
Zhuqing Fang, Shukui Li, Jiping Liu, Chuang Yu, Dongsen Zheng, Meizhuang Qiao
Summary: This study investigates the influence of lithium aluminium hydride (LiAlH4) on the decomposition process of cyclotrimethylenetrinitramine (RDX). The results show that LiAlH4 significantly decreases the decomposition temperature of RDX and alters its decomposition pattern.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Thermodynamics
Chongye Chang, Xinyu Wei, Jiafan Ren, Jinhua Peng, Miao Yao, Xinming Qian
Summary: By studying the thermal decomposition curves and kinetic parameters of mixed explosives, it was found that adding aluminum powder/Mg(BH4)2 mixture below a 2:1 mass ratio can improve the thermal stability of the explosive, thus enhancing its thermal safety.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Ke-Juan Meng, Haorui Zhang, Shuai-Zhong Wang, Yi Wang, Qinghua Zhang, Qi-Long Yan
Summary: The novel insensitive high-energy-density material ICM-102 shows lower sensitivity and higher energy, making it suitable for low-vulnerability propellants. It increases peak decomposition temperature and burning rate of propellants, with narrower and smaller particle size distributions of combustion products compared to RDX-based propellants.
COMBUSTION AND FLAME
(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)
Article
Polymer Science
Chen Shen, Shi Yan, Yapeng Ou, Qingjie Jiao
Summary: In this study, fluorinated polyurethane (FPU) was prepared and its structure and mechanical properties were characterized. It was found that FPU can enhance the oxidation of Al and produce smaller agglomerates in the combustion process.
Article
Thermodynamics
Leo Courty, Philippe Gillard, Jordan Ehrhardt, Barbara Baschung
Summary: This article investigates the ignition and combustion parameters of two commercial insensitive propellants, finding that argon enhances combustion efficiency and nitrocellulose-based propellants are more reactive than RDX-based ones.
COMBUSTION AND FLAME
(2021)
Article
Chemistry, Multidisciplinary
Lin-Lin Liu, Tong-Yong Zhang, Song-Qi Hu
Summary: The study evaluated the HONO elimination process of energetic nitramines using various calculations and theories, finding that the nitro group location significantly affects the process, with the one on the six-numbered ring being the most difficult to occur. Furthermore, the longer distance between nitro groups and adjacent hydrogen atoms results in higher barrier energy, while the axial positioning of nitro groups on the five-numbered ring is most likely to undergo the HONO elimination process.
JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Multidisciplinary
Sabri Touidjine, Moulai Karim Boulkadid, Djalal Trache, Samir Belkhiri, Abderrahmane Mezroua, Mohamed Islam Aleg, Afaf Belkebiche
Summary: Improving the performance of solid composite propellants (SCPs) with ammonium nitrate (AN) as an oxidizer can be achieved by incorporating energetic ingredients such as explosives, energetic binders, or catalysts. In this study, polyurethane (PU) was mixed with nitrocellulose (NC) as an energetic polymer to enhance the performance of AN-based composite solid propellants. The experimental results showed that increasing the NC content catalyzed the thermal decomposition of the propellant, leading to improved performance.
DEFENCE TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jianxin Nie, Jiahao Liang, Haijun Zhang, Yu Zou, Qingjie Jiao, Yingjun Li, Xueyong Guo, Shi Yan, Yanli Zhu
Summary: This study investigates the combustion behaviors of HTPB/AP/Al and HTPE/AP/Al propellants under slow heating conditions. The results show that HTPB binder decomposes to form pore channels, which increase the structural damage in the propellant. In contrast, HTPE binder liquefies and forms a coating on the propellant particles, slowing down the structural damage. The findings also indicate that larger pore channels increase the burning surface for combustion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Baoyun Ye, Hongyi Chen, Chang Liu, Chongwei An, Jingyu Wang, Yong Zhang
Summary: This study proposed a simple method to construct MXene-supported vanadium pentoxide nanocomposites (MXene/V2O5, MXV), which effectively improved the thermal decomposition process of ammonium perchlorate (AP) and enhanced the combustion performance of composite solid propellants.
Article
Thermodynamics
Kanagaraj Gnanaprakash, Meng Yang, Jack J. Yoh
Summary: There is a growing interest in the development of electrically controlled solid propellants (ECSPs) due to their advantages over conventional solid propellants. However, the understanding of the complex reaction mechanism of ECSPs is still limited. This study expands the knowledge on the thermal decomposition mechanisms of ECSPs based on lithium perchlorate (LP) oxidizer and poly vinyl alcohol (PVA) binder, and investigates the influence of tungsten (W) as a metal additive using thermal analysis.
COMBUSTION AND FLAME
(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
Thermodynamics
Manman Li, Yuchen Gao, Rui Hu, Qionglin Wang, Weitao Yang
Summary: The study focuses on the development of energetic photocurable binders for 3D printed propellants, with a significant emphasis on thermal decomposition analysis. The thermal performance and decomposition kinetics were investigated using nonisothermal DSC techniques, with further confirmation through simultaneous DSC-FTIR analysis. Kinetic studies were used to compute Arrhenius parameters, and decomposition products were detected through in-situ DSC-MS-FTIR analysis.
THERMOCHIMICA ACTA
(2021)
