Article
Biochemistry & Molecular Biology
Qiong Wang, Xiao-Hong Wang, Qing Pan, Hai Chang, Hong-Jian Yu, Wei-Qiang Pang
Summary: The thermal behaviors of nano-scale composite energetic materials composed of ADN and NC were studied using various instruments. The results showed that the interaction mechanism between ADN and NC is crucial for the design and safety of these materials. The mixture of NC and ADN exhibited different thermal decomposition characteristics compared to NC or ADN alone. ADN initiated the interaction with NC, leading to the formation of oxidative gases. The thermal decomposition process of ADN dominated the initial stage of the mixture, followed by the oxidation of NC and the cation of ADN.
Article
Chemistry, Multidisciplinary
Jingjing Li, Li Gong, Yanhua Lan, Tao Zeng, Dinghua Li, Jianmin Li, Rongjie Yang
Summary: The effects of hydrogen bonding between solvents and ammonium dinitramide (ADN) crystal faces on the morphology of ADN were studied using experimental methods and molecular dynamics (MD) simulation. The results showed that the type of solvent used affected the crystallization process, resulting in ADN crystals with different shapes. The MD simulation revealed that the standard deviation of the hydrogen-bonding energy in the solvent systems correlated with the size differences of each crystal face. The study also identified the specific interactions between ethyl acetate and ADN, which ultimately led to the formation of spherical ADN crystals.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Chemistry, Applied
Weifeng Meng, Ting Zhang, Zhuiyue Guo, Weihua Qin, Yanhua Lan, Jinxian Zhai
Summary: The thermal decomposition characteristics and fuel oxidation mechanism of ADN-based liquid propellant were studied using reactive molecular dynamics simulation. The effect of temperature on the decomposition and distribution of main products was investigated. The study revealed that temperature played a role in promoting propellant decomposition and identified the main products and their generation pathways. The overall reaction mechanism of the liquid propellant was deduced.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2023)
Article
Chemistry, Physical
Ning Yan, Cheng Bian, Hongyan Li, Jingna Wang, Min Xu, Haitao Huang
Summary: The study introduced a method to encapsulate Ammonium dinitramide (ADN) with alkylated graphene oxide nanosheets (AmGO) using Pickering emulsion as a soft template. The resulting ADN@AmGO composites showed decreased water adsorption and efficient catalytic efficiency on the thermal decomposition of ADN. These properties make ADN@AmGO a promising alternative for the fabrication of high energetic, low signature and eco-friendly propellants.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Qiong Wang, Lu-ping Xu, Chong-qing Deng, Er-gang Yao, Hai Chang, Wei-qiang Pang
Summary: Nanoscale composite energetic materials (CEMs) based on oxidizer and fuel have potential advantages in energy adjustment and regulation. Micro- and nanosized fibers based on nano nitrocellulose (NC)-ammonium dinitramide (ADN) were prepared and characterized. The results showed that the fibers had a fluffy 3D macrostructure with energetic particles embedded. ADN reduced the first exothermic peak temperature and moved the pressure rise time forward. It also decreased the ignition delay time and enhanced the burning intensity of the fibers, while reducing the mechanical sensitivities.
Review
Engineering, Multidisciplinary
Fu-yao Chen, Chun-lei Xuan, Qiang-qiang Lu, Lei Xiao, Jun-qing Yang, Yu-bing Hu, Guang-Pu Zhang, Ying-lei Wang, Feng-qi Zhao, Ga-zi Hao, Wei Jiang
Summary: Ammonium dinitramide (ADN) is a potential substitute for ammonium perchlorate in energetic materials due to its high density, positive oxygen balance, and halogen-free characteristics. However, its application is limited due to its strong hygroscopicity, difficult storage, and incompatibility with isocyanate curing agents. An in-depth analysis and discussion of key research points are crucial in order to fully utilize the advantages of ADN in energetic materials.
DEFENCE TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Rene F. B. Goncalves, Leonardo H. Gouvea, Luiz E. N. Almeida, Aleksey Kuznetsov, Jose A. F. F. Rocco
Summary: Energetic materials, such as ammonium dinitramide (ADN) and ADN formulated as a solid composite propellant with glycidyl azide polymer (GAP), were studied for their thermal decomposition mechanisms using reactive molecular dynamics simulations. The calculated activation energies and comparison to literature data showed the methodology useful for predictions and kinetic analysis of combustion/pyrolysis reactions of energetic materials.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yingli Gao, Weiwei Tian, Yuelin Li, Juncai Zhu, Meijie Liao, Yutong Xie
Summary: This study aims to investigate the compatibility mechanism between different plasticizers and base asphalt using molecular dynamics (MD) simulation. Four plasticizers, namely DOP, DOA, ATBC, and TOTM, were evaluated for their compatibility with asphalt using MD simulation parameters and verified with macroscopic tests. Results showed that all four plasticizers were effectively miscible with asphalt at temperatures ranging from 130°C to 170°C. The optimal temperatures for DOP, DOA, ATBC, and TOTM in modified asphalt preparation were found to be 140°C, 130°C, 140°C, and 150°C, respectively. The compatibility varied depending on the polarity of the plasticizers and asphalt components, with TOTM exhibiting the best stability and ATBC the worst. Aromatics and saturates showed better deformation ability and were more likely to form stable blending systems with strong polar plasticizers.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Jingjing Li, Weiqiang Tang, Zhenhui Liu, Kun Cong, Li Gong, Jianmin Li, Rongjie Yang
Summary: Microcomposite particles of aluminum dotted by ammonium dinitramide (ADN) were prepared successfully through an in-situ crystallization growth method. It was found that the decomposition of ADN increased the oxidation degree of aluminum, making it easier to ignite and burn. After combustion, the Al@ADN composites were converted to α-Al2O3 and γ-Al2O3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Xiaoyan Lian, Wenhua Xue, Shuai Dong, Enzhou Liu, Hui Li, Kangzhen Xu
Summary: Photocatalysis technology is seen as a promising environmental remediation strategy, with the use of Bi2WO6/g-C3N4 heterostructure nanosheets showing high efficiency in degrading ammonium dinitramide. Under optimized conditions, the composite exhibits excellent stability and generates nitrate ions as the main degradation products. The proposed S-scheme heterojunction mechanism helps explain the high REDOX performance of the BWO/CN composite.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Qian Zhang, Sicong Yan, Rong Zhou, Xu Yan, Peineng Zhu, Lingyun Chen, Fatang Jiang
Summary: In this study, a new horizontal casting device and multiple characterization techniques were used to evaluate the compatibility and stability of Konjac glucomannan (KGM) and starch composite systems. The results showed that KGM and starch could form stable dispersions and films with good compatibility at certain ratios. This research provides valuable insights into the interaction mechanism between polysaccharides and starch and offers new perspectives and methods for the development of food design tools.
FOOD HYDROCOLLOIDS
(2024)
Article
Engineering, Multidisciplinary
Dun-ju Wang, Xu Zhou, Yao-feng Mao, Xin Wang, Ye-ming Huang, Rui-hao Wang, Da-wei Zheng
Summary: In this study, a novel ADN/CA composite material with a microporous microsphere structure was designed and prepared. The composite exhibited outstanding characteristics in energy release, thermal decomposition temperature, and sensitivity. It has promising applications in improving the combustion performance and safety of solid propellants.
DEFENCE TECHNOLOGY
(2023)
Article
Engineering, Chemical
Dongdong Hu, Yinglei Wang, Chuan Xiao, Yifei Hu, Zhiyong Zhou, Zhongqi Ren
Summary: This study proposes and synthesizes a new cocrystal composed of ammonium dinitramide and 3,4-diaminofurazan, and systematically investigates its properties. The results show that the cocrystal has lower hygroscopicity and reduced water sorption capacity compared to pure ammonium dinitramide.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Yuanping Zhang, Boyu Ma, Xinlei Jia, Conghua Hou
Summary: The crystal morphology of ADN/PDO cocrystal was predicted using the MAE model at different temperatures under vacuum and ethanol conditions. Five growth planes were identified under vacuum conditions, with (1 0 0) and (0 1 1) planes being the most prominent. The (0 1 1) crystal plane showed higher ethanol adsorption and stronger binding energy compared to other planes. Additionally, increasing temperature resulted in a more spherical crystal shape, reducing the sensitivity of the explosive.
Article
Construction & Building Technology
Ting Huang, Zengping Zhang, Li Wang, Jia Sun, Zhaofei Wang, Hao Liu, Liqi Chen
Summary: This study investigated the compatibility between polyurethane (PU) and asphalt under different shearing temperatures and PU contents. The simulation results showed that PU and asphalt achieved optimal compatibility at a temperature of 135°C, and a PU content of 15 wt% played a positive role in improving the tightness of the asphalt molecular structure.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Applied
Gazi Hao, Lei Xiao, Yubing Hu, Fang Shao, Xiang Ke, Jie Liu, Fengsheng Li, Wei Jiang, Fengqi Zhao, Hongxu Gao
JOURNAL OF ENERGETIC MATERIALS
(2019)
Article
Chemistry, Applied
Gazi Hao, Xiang Zhou, Xiaolian Liu, Bingwang Gou, Yubing Hu, Lei Xiao, Jie Liu, Wei Jiang, Fengqi Zhao, Hongxu Gao
JOURNAL OF ENERGETIC MATERIALS
(2019)
Article
Thermodynamics
Gazi Hao, Hao Li, Chenhui Mao, Yubing Hu, Lei Xiao, Guangpu Zhang, Jie Liu, Wei Jiang, Fengqi Zhao, Hongxu Gao
Summary: The study synthesized a series of nano-Cu-Fe composite metal oxides with different molar ratios and found that the ratio of 1:2 exhibited the best catalytic effect on the thermal decomposition of ammonium perchlorate. This ratio significantly increased the decomposition temperature and heat of AP, indicating the existence of a synergistic effect between CuO and Fe2O3 nanoparticles.
COMBUSTION SCIENCE AND TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Qiangqiang Lu, Lei Xiao, Yinglei Wang, Guangpu Zhang, Yubing Hu, Fuyao Chen, Fengqi Zhao, Junqing Yang, Wei Jiang, Gazi Hao
Summary: The modification of ammonium dinitramide (ADN) crystal under vacuum conditions was studied through theoretical calculation. The results showed that the crystal structure and properties of ADN can be changed by doping with energetic nitramine molecules, leading to a reduction in hygroscopicity. Among the modified ADN crystals, 1HMX/24ADN was found to be the most suitable scheme for anti-hygroscopicity modification.
JOURNAL OF MOLECULAR MODELING
(2022)
Article
Chemistry, Applied
Bingwang Gou, Yong Kou, Yubing Hu, Guangpu Zhang, Hu Guo, Lei Xiao, Fengqi Zhao, Hongxu Gao, Wei Jiang, Gazi Hao
Summary: This investigation explores the application performance of nano-combustion catalyst CuCr2O4 in solid propellants. The results show that nano-CuCr2O4 can improve the surface defects of the propellant and significantly increase its density and burning rate. This catalyst is expected to be widely used in solid propellants.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2022)
Article
Chemistry, Applied
Huzeng Zong, Chao Guo, Zehao Wang, Rui Guo, Hao Zhou, Gazi Hao, Hao Ren, Lei Xiao, Wei Jiang
Summary: By using fused deposition modeling (FDM) 3D printing, high-density and high-performance TNT/HMX explosive grains were successfully fabricated, and the formation mechanism was explored. This study provides valuable insights and foundation for 3D printed melt-cast explosives with complex structures and high performance.
JOURNAL OF ENERGETIC MATERIALS
(2022)
Article
Chemistry, Applied
Shiwen Wang, Huzeng Zong, Cao Yang, Gazi Hao, Guangpu Zhang, Junqing Yang, Xiaojun Feng, Kun Zhang, Tianfu Zhang, Lei Xiao, Wei Jiang
Summary: Fabrication of superfine spherical TKX-50 is of great significance for potential applications. The as-prepared TKX-50 showed narrow particle size distribution, high sphericity, hollow structure, and improved safety performance compared to raw TKX-50. It had lower decomposition temperatures, faster decomposition rate, higher impact sensitivity, and lower friction sensitivity.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2023)
Article
Chemistry, Physical
Li Ju, Gazi Hao, Fancang Meng, Wei Jiang, Qingmin Ji
Summary: Due to designable chemical modifications and self-assembly structures, fullerenes have provided an innovative platform for controlling heteroatoms in carbon structures and improving the catalytic activity of metal-N-C systems. This study demonstrates enhanced Fe ion binding through oxidation of C(60), resulting in higher Fe doping content and improved electrocatalytic activity and stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Ananta Dutta, Surjya K. Pal, Sushanta K. Panda
Summary: In the realm of micro-Friction Stir Welding (FSW), this study investigates the influence of pinless and pin tool on hook formation, temperature evolution, and bonding mechanisms. The study reveals that pin tool improves joint strength and reduces axial force during traversing. Pin tool also exhibits a higher proportion of recrystallized grains compared to pinless tool, resulting in better weld quality.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Abdelmalek Habes, Mehdi Derradji, Oussama Mehelli, Fouad Benaliouche, Slimane Abdous, Youcef Medjaouri, Nour Chirine Abderrahim, Hakima Fodil, Mohamed El Amine Kadi
Summary: In recent years, there has been significant progress in advancing nanomaterials with exceptional properties for electromagnetic (EM) wave absorption. This study investigates the application of a novel thermosetting phenolic resin as a polymeric matrix for EM shielding, highlighting the enhancement of stability with the incorporation of zinc oxide nanoparticles.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xiaoxing Zhang, Yongchao Luo, Kai Xu, Weihao Liu, Shuangshuang Tian, Benli Liu, Jiahao Wang, Feng Hu
Summary: This study calculates and analyzes the adsorption performance and sensing characteristics of Cu-MoTe2 for SF6 decomposition components. The results show that Cu-MoTe2 chemisorbs SO2 and H2S, while physisorbs SOF2. Cu-MoTe2 has the potential to be used as a chemical sensor material.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xin Qu, Xinyu Sang, Yarong Lv, Ce Wang, Ping Hu, Quanyi Guo, Yong Liu
Summary: In this study, a PLLA-COI multilayer nanofiber membrane was prepared to prevent peritendinous adhesion, and it was found to have good cell compatibility and anti-adhesion effect, effectively promoting the recovery of Achilles tendon injury.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Ching-Yuan Ho, Chen-Yi Su, Wei-Zhe Hu
Summary: An equivalent electrical circuit (EEC) is established to understand the droplet-base electricity generation (DEG) mechanism, using voltage-time curve decomposition. The concept of Debye length is introduced to explain charge density at the interface between the ionic droplet and the PTFE surface. This study provides valuable insights into the exponential decay of output voltage and the improvement of solar panel performance in alternating rainy and dry weather through correct circuit design.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Iori Ono, Takeo Oku, Atsushi Suzuki, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa
Summary: The effects of adding rubidium (Rb) and ethylammonium (CH3CH2NH3, EA) to guanidinium [C(NH2)3, GA] based CH3NH3PbI3 perovskite solar cells were investigated. The lattice constants and (100)-orientation of EA and Rb-modified perovskite crystals increased compared to the as-prepared perovskite. The addition of GA and EA effectively improved the photovoltaic properties of the device under indoor light conditions.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xuewu Li, Hongxing Wang, Zhiguo Xing, Yanfei Huang, Weiling Guo, Haidou Wang, Yanfang Zhang, Longlong Zhou
Summary: This study prepared a novel composite antireflective structure with slotted holes using FDTD simulation combined with femtosecond laser design to further improve the infrared anti-reflective performance. The results show that the antireflection performance of the simulated groove-hole composite structure is better than that of the individual groove and hole structures, and the nanoparticle structures can further improve the antireflection performance in the infrared region.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Sepideh Soltani, Hajar Ghanbari, S. Mohammad Mirkazemi
Summary: In this study, h-BN and r-BN structures were synthesized through controlled nitridation. The h-BN exhibited sheet-like morphology, while the r-BN formed needle-like hollow structures.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Wanying Zhang, Xiaoyuan Wang, Yibo Ai, Weidong Zhang
Summary: This study investigates the impact of oxygen corrosion on the mechanical properties of uranium and uranium alloys and develops a feature-guided decision tree algorithm for prediction. The research highlights crucial correlations discovered through feature engineering, improving the performance of machine learning models. The mechanical properties of uranium and uranium alloys after oxygen corrosion are successfully predicted with a prediction error of less than 5%.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Qiong Cheng, Yao Zhao, Juntao Zhuang, Ahmad M. Alshamrani
Summary: This study presents a model to simulate the transient dynamics of a car's hood door during an accident, with reinforced structure in the axial direction using graphene nanoplatelets. The results are verified through comparison with open-source results and deep neural networks. The study highlights the importance of graphene nanoplatelets in the composite system's transient and forced vibrations, and provides valuable suggestions for future structural designs.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Rostyslav Nizinkovskyi, Thorsten Halle, Manja Krueger
Summary: Cu-precipitation in reactor pressure vessel steels is a major concern for the degradation of mechanical properties. This study develops and implements a non-local phase-field model to investigate the equilibrium morphology of precipitates in the over-aged state. The model confirms that the precipitates should have an oblate lath-like shape, which is supported by experimental data. The orientation of the precipitates is consistent with literature. The mechanism of morphology accommodation is explained using the invariant-line method. However, the equilibrium values of elongation significantly deviate from experimental data, likely due to the metastable state of the precipitates during the coarsening process.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xiaowei Li, Yafei Liu, Shiyu Luan, Deqing Ma, Xiaoyu Liu, Qiangbing Liu, Jinhui Wang
Summary: In this study, the hot deformation behavior of as-cast Mg-2Ho binary alloy under different strain rates and deformation temperatures was systematically studied. The microstructure and dynamic recrystallization mechanisms were analyzed using SEM and EBSD techniques. A strain-compensated Arrhenius constitutive equation and a PSO-BP ANN model based on machine learning were established to analyze the flow behavior. The experimental results showed that the flow stress decreased with increasing temperature and decreasing strain rate. The PSO-BP ANN model demonstrated good accuracy in predicting flow stress.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Jiaxin Liu, Guangkai Liao, Zhenyan Xie, Bowen Li, Lingna Cui, Yuejun Liu
Summary: This study investigated the rheological behavior of polyamide 6 (PA6) film during biaxial stretching and found that the elastic-plastic deformation during stretching affected the stress rebound or relaxation during heat setting. The relaxation spectrum and activation energy spectrum were calculated, revealing the process of stress relaxation as energy release and stress rebound as energy absorption. The results provide theoretical guidance for understanding the biaxial stretching deformation mechanism of polymer films.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Monisha Manathanath, Benu George, Juraij Kandiyil, Subramaniam Sujatha, Suchithra Tharamel Vasu, Sujith Athiyanathil, Unnikrishnan Gopalakrishna Panicker
Summary: This study explores a method that combines a biodegradable polymer scaffold with a photosensitizer for antibacterial photodynamic therapy. The results show a high inhibition rate against E. coli and S. aureus using this method.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Mohammad Hemmat Esfe, S. Ali Eftekhari, S. Mohammad Sajadi, Mohammad Hashemian, Soheil Salahshour, Seyed Majid Motallebi
Summary: In this study, an artificial neural network was used to predict the dynamic viscosity of MWCNT-ZnO (25:75)/SAE 10W40 oil nano-lubricant. The temperature, shear rate, and solid volume fraction were found to have significant effects on the dynamic viscosity, with shear rate being the most influential parameter.
MATERIALS TODAY COMMUNICATIONS
(2024)