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Nano-hydroxyapatite filled EPDM nanocomposite: towards green elastomeric thermal insulating coating with superior mechanical, thermal, and ablation properties 纳米羟基磷灰石填充三元乙丙橡胶纳米复合材料:实现具有优异机械、热和烧蚀性能的绿色弹性隔热涂层
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2024-01-01 DOI: 10.1080/07370652.2023.2300467
M. Mosa, Mohamed Gobara, M. Mokhtar Kotb, Hany Fouda, Sherif Elbasuney
Heat-shielding composite materials containing asbestos has been used for thermal insulation of aerospace rocket motors. However, asbestos has carcinogenic effects on both human and environment. Thi...
含石棉的热屏蔽复合材料已被用于航空航天火箭发动机的隔热材料。然而,石棉对人类和环境都有致癌作用。这...
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引用次数: 0
The efficient activation by adding Energetic metallic particles outside high explosives: a New direction for composite explosives 在高能炸药外添加高能金属颗粒实现高效活化:复合炸药的新方向
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-12-23 DOI: 10.1080/07370652.2023.2275196
Chuan Xiao, Zhan-Dong Wang, Fang Chen, Yu-Xin Xu, Xiao-Long Jiao
Adding energetic metallic particles (EMPs) into high explosive (HE) will increase total energy output, while the energy enhancement differs with the structure of composite explosives (CE). To inves...
在高能炸药(HE)中加入高能金属微粒(EMP)会增加总能量输出,而能量增强效果则随复合炸药(CE)结构的不同而不同。为了研究高能金属颗粒在爆炸中的作用,我们需要在高能炸药中添加高能金属颗粒(EMPs)。
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引用次数: 0
Thermal decomposition mechanism study of 1-acetyl-3,5-dinitro-1,3,5-triazacyclohexane (TAX) 1-acetyl-3,5-dinitro-1,3,5-triazacyclohexane (TAX) 的热分解机理研究
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-12-20 DOI: 10.1080/07370652.2023.2295259
Ruxin Zhang, Yinguang Xu, Fan Wang, Guangyuan Zhang, Haibin Hou, Lizhen Chen, Jianlong Wang
1-Acetyl-3,5-dinitro-1,3,5-triazacyclohexane, codenamed TAX, is a by-product of the RDX/HMX production process. The thermal decomposition process of TAX has not been studied at present. Understandi...
代号为 TAX 的 1-乙酰基-3,5-二硝基-1,3,5-三氮杂环己烷是 RDX/HMX 生产过程中产生的一种副产品。目前尚未对 TAX 的热分解过程进行研究。目前还没有对 TAX 的热分解过程进行研究。
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引用次数: 0
Strategy for improving the energy output efficiency of TKX-50: introduction of nitroamine explosives 提高 TKX-50 能源输出效率的战略:引入硝胺炸药
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-12-17 DOI: 10.1080/07370652.2023.2295281
Shu-Ji Wang, Di Wang, Xiao-le Sun, Yong Hu, Peng-Fei Zhu, Xueyong Guo
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引用次数: 0
A review on material characterization of composite solid propellant 复合固体推进剂材料特性研究进展
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-29 DOI: 10.1080/07370652.2023.2287466
Rajeev Ranjan, H. Murthy
Composite solid propellants (CSPs) are extensively used in solid rocket motors (SRMs) due to their excellent mechanical properties, stability, and high energy density. Lack of structural integrity ...
复合固体推进剂因其优异的力学性能、稳定性和高能量密度而广泛应用于固体火箭发动机。缺乏结构完整性……
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引用次数: 0
Novel protonated LiCoO2 as a catalyst for the thermal decomposition of ammonium perchlorate 新型质子化LiCoO2作为高氯酸铵热分解催化剂的研究
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-28 DOI: 10.1080/07370652.2023.2287457
Benjamin D. Hirt, Chase W. Wernex, Alp Sehirlioglu, Metin Örnek, Steven F. Son
LiCoO2 (LCO) powders were protonated and their catalytic activity on the thermal decomposition of ammonium perchlorate (AP) was tested using differential scanning calorimetry and thermogravimetric ...
采用差示扫描量热法和热重法测定了LiCoO2 (LCO)粉末的质子化反应和对高氯酸铵(AP)热分解的催化活性。
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引用次数: 0
Study on dynamic deformation-damage-ignition mechanism of GAP/RDX/TEGDN propellant GAP/RDX/TEGDN推进剂动态变形-毁伤-点火机理研究
IF 2.1 3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-16 DOI: 10.1080/07370652.2023.2275198
Liying Dong, Yanqing Wu, Kun Yang, Junwu Zhu, Xiao Hou
Investigations on high-energy and low-vulnerability propellants can provide a better understanding for improving the operational effectiveness and survivability of strategic and tactical missiles. ...
对高能和低易损性推进剂的研究可以为提高战略和战术导弹的作战效能和生存能力提供更好的理解. ...
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引用次数: 0
The initial reaction mechanism of FOX-7 under high temperature and high pressure FOX-7在高温高压下的初始反应机理
3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-11 DOI: 10.1080/07370652.2023.2278538
Wei Zheng, Xue Yang, Fu-Sheng Liu, Zheng-Tang Liu, Qi-Jun Liu
ABSTRACTIn recent years, FOX-7 has attracted great interest due to its excellent performance. The initial decomposition mechanism of FOX-7 (ε phase) at high temperature and pressure is simulated by ab initio molecular dynamics. We mainly studied the initial reaction of FOX-7 under extreme conditions of 10 GPa and 700-3000 K. When the pressure is constant, FOX-7 shows different decomposition mechanisms as the temperature increases. At lower temperatures, hydrogen is transferred first. As the temperature increases, the transfer of hydrogen and the breakage of the C-NO2 bond leading to the generation of acid are the main initial decomposition pathways. The energy barrier for hydrogen transfer is lower than that of C-NO2 bond breaking, which was confirmed by a single-molecule transition state search. Thus, the correctness of the decomposition mechanism obtained by molecular dynamics is proved. Different from previous studies, this paper considers both temperature and higher pressure, providing a reference for the initial reaction mechanism of FOX-7 under extreme conditions.KEYWORDS: Ab initio molecular dynamicsFOX-7initial decomposition mechanism AcknowledgmentsThis work was supported by the National Natural Science Foundation of China (Grant No. 12072299).Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementThe data that support the findings of this study are available from the corresponding author upon reasonable request and available within the article.Additional informationFundingThe work was supported by the National Natural Science Foundation of China [12072299].
摘要近年来,FOX-7因其优异的性能引起了人们的极大兴趣。采用从头算分子动力学方法模拟了FOX-7 (ε相)在高温高压下的初始分解机理。我们主要研究了FOX-7在10 GPa和700-3000 K的极端条件下的初始反应。当压力一定时,FOX-7随着温度的升高呈现出不同的分解机制。在较低的温度下,氢首先被转移。随着温度的升高,氢的转移和C-NO2键的断裂导致酸的生成是主要的初始分解途径。氢转移的能垒低于C-NO2键断裂的能垒,这一点通过单分子跃态搜索得到了证实。从而证明了分子动力学所得分解机理的正确性。与以往研究不同的是,本文同时考虑了温度和高压,为FOX-7在极端条件下的初始反应机理提供了参考。关键词:从头计算分子动力学fox -7初始分解机制披露声明作者未报告潜在的利益冲突。数据可用性声明支持本研究结果的数据可根据通讯作者的合理要求从文章中获取。本研究得到国家自然科学基金资助[12072299]。
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引用次数: 0
A robust tension-compression asymmetric phase-field fracture model for describing PBX cracking under complex stress states 描述复杂应力状态下PBX裂纹的鲁棒拉压不对称相场断裂模型
3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-09 DOI: 10.1080/07370652.2023.2275199
Luoxia Cao, Hong Yang, Yang Zhou, Mingfeng Tang, Shengnan Wang, Huarong Li, Yong Han
ABSTRACTThe crack behaviors under complex stress states are very important for the safety of polymer-bonded explosives (PBXs) under accidental stimulations, but their accurate description is a challenge. Due to the advances of tracking discontinuities and multi-fields coupling, the phase-field model for complex fracture phenomena is attracting significant interest recently. Conventional phase-field fracture models are tension-compression symmetric or based on volumetric-deviatoric strain energy split, and these conventional phase-field models may lead to unrealistic fracture patterns, which hinders its further application in PBX fracture simulations. In this work, we present an extended, tension-compression asymmetric phase-field fracture model for PBXs, which distinguishes the contributions of tensile and compressive stresses to damage driving energy, and couples the mechanism of mechanical degradation and energy-driving cracking diffusion. We implemented our improved phase-field fracture model into finite element calculations and compared the simulation results with the conventional tension-compression symmetric phase-field fracture model and volumetric-deviatoric strain energy split phase-field fracture model by simulating PBX specimens under static loadings. The results show that our model not only accurately depicts the tensile and compressive cracks, but also describes compression-assisted cracking while suppressing unrealistic damage nucleation caused by small amplitudes of local compressive stresses, making it a very efficient way of describing PBX cracking under complex stress states. This new model is both mathematically and physically concise, and convenient for numerical implementation. Moreover, the novel model can be naturally extended to simulate shock-induced dynamic and/or coupled fracture of PBXs because of its feasibilities for dynamic extension and multi-field coupling.KEYWORDS: Finite element methodphase-field fracturepolymer-bonded explosivesstrain energy decompositiontension-compression asymmetry AcknowledgmentsThe corresponding author acknowledges the financial support from National Natural Science Foundation of China (Grant No. 12202415).Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/07370652.2023.2275199Additional informationFundingThis work was supported by the National Natural Science Foundation of China [12202415].
摘要复杂应力状态下的裂纹行为对聚合物粘结炸药在意外刺激下的安全性至关重要,但其准确描述是一个挑战。由于跟踪不连续面和多场耦合的发展,复杂断裂现象的相场模型近年来引起了人们的广泛关注。传统的相场裂缝模型是拉压对称的,或者基于体积-偏差应变能分裂,这些传统的相场模型可能导致不切实际的裂缝模式,阻碍了其在PBX裂缝模拟中的进一步应用。在这项工作中,我们提出了一个扩展的,拉伸-压缩不对称相场断裂模型,该模型区分了拉伸和压缩应力对损伤驱动能量的贡献,并耦合了机械退化和能量驱动裂纹扩散的机制。将改进的相场断裂模型应用到有限元计算中,并通过对PBX试件进行静态加载模拟,将模拟结果与传统的拉压对称相场断裂模型和体积-偏差应变能分裂相场断裂模型进行对比。结果表明,该模型不仅可以准确地描述拉伸和压缩裂纹,而且可以描述压缩辅助裂纹,同时抑制局部压应力小幅值引起的不切实际的损伤成核,是描述复杂应力状态下PBX裂纹的一种非常有效的方法。该模型在数学上和物理上都很简洁,便于数值实现。此外,由于该模型具有动态扩展和多场耦合的可行性,因此可以自然地扩展到模拟pbx的冲击诱发动态和/或耦合破裂。关键词:有限元法相场断裂聚合物粘结炸药应变能分解拉压不对称致谢本文作者感谢国家自然科学基金项目(批准号12202415)的资助。披露声明作者未报告潜在的利益冲突。补充资料本文补充资料可通过https://doi.org/10.1080/07370652.2023.2275199Additional info在线获取。基金资助:国家自然科学基金项目[12202415]。
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引用次数: 0
Design of PVA/PF/CL-20 explosive ink with small critical size and research on micro-sized detonation performance 小临界尺寸PVA/PF/CL-20爆炸油墨设计及微尺寸爆轰性能研究
3区 材料科学 Q3 CHEMISTRY, APPLIED Pub Date : 2023-11-06 DOI: 10.1080/07370652.2023.2275201
Shijiao Li, Kai Han, Chenyang Li, Haoxing Cao, Kaixin Tan, Jianquan Jing, Fubing Gao, Chongwei An, Bidong Wu
ABSTRACTUsing 3D direct writing technology, a small critical size explosive ink formula was designed using polyvinyl alcohol (PVA) aqueous solution and phenolic resin (PF) ethanol solution as a two-component bonding system, and CL-20 as the main explosive. In particular, we investigated the influence of the CL-20 solid content on the micro-size detonation performance. Preliminary research shows that when the content of the main explosive in the explosive ink is less than 92%, the detonation velocity increases with the increase of the content, and the detonation critical size decreases with the increase of the content. The micromorphology, molding density, explosive crystal form, mechanical sensitivity, thermal stability and detonation corner of the molded samples were tested and characterized. The results show that the internal particle distribution of the printed molded sample is uniform, without cracks and fractures, the crystal form remains ε-type, the mechanical sensitivity and thermal stability are reduced, and the detonation velocity after molding with 92% explosive ink reaches 7281m·s-1, which is critical The detonation size is 1×0.027mm, and the detonation angle can reach up to 160°, showing excellent micro-size detonation performance. KEYWORDS: CL-20detonation performancedirect writingexplosive inkmicro-size Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要采用三维直写技术,以聚乙烯醇(PVA)水溶液和酚醛树脂(PF)乙醇溶液为双组份键合体系,以CL-20为主要炸药,设计了临界尺寸小的爆炸油墨配方。我们特别研究了CL-20固体含量对微尺度爆轰性能的影响。初步研究表明,当爆炸油墨中主炸药的含量小于92%时,爆速随含量的增加而增大,爆轰临界尺寸随含量的增加而减小。对成型样品的微观形貌、成型密度、爆炸晶型、机械灵敏度、热稳定性和爆轰角进行了测试和表征。结果表明:打印成型样品内部颗粒分布均匀,无裂纹和断裂,结晶形态保持ε型,机械灵敏度和热稳定性降低,92%炸药油墨成型后爆轰速度达到7281m·s-1,达到临界爆轰尺寸1×0.027mm,爆轰角可达160°,表现出优异的微尺寸爆轰性能。关键词:cl -20爆轰性能直写爆炸性油墨微尺寸披露声明作者未报告潜在利益冲突。
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Journal of Energetic Materials
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