51
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Hu Y, Yang Y, Fan R, Lin K, Hao D, Xia D, Wang P. Enhanced Thermal Decomposition Properties and Catalytic Mechanism of Ammonium Perchlorate over CuO/MoS
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Composite. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yinghui Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Kaifeng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Dongyu Hao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Debin Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
| | - Ping Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 China
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52
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Wang H, Shen J, Kline DJ, Eckman N, Agrawal NR, Wu T, Wang P, Zachariah MR. Direct Writing of a 90 wt% Particle Loading Nanothermite. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806575. [PMID: 30993751 DOI: 10.1002/adma.201806575] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 02/12/2019] [Indexed: 06/09/2023]
Abstract
The additive manufacturing of energetic materials has received worldwide attention. Here, an ink formulation is developed with only 10 wt% of polymers, which can bind a 90 wt% nanothermite using a simple direct-writing approach. The key additive in the ink is a hybrid polymer of poly(vinylidene fluoride) (PVDF) and hydroxy propyl methyl cellulose (HPMC) in which the former serves as an energetic initiator and a binder, and the latter is a thickening agent and the other binder, which can form a gel. The rheological shear-thinning properties of the ink are critical to making the formulation at such high loadings printable. The Young's modulus of the printed stick is found to compare favorably with that of poly(tetrafluoroethylene) (PTFE), with a particle packing density at the theoretical maximum. The linear burn rate, mass burn rate, flame temperature, and heat flux are found to be easily adjusted by varying the fuel/oxidizer ratio. The average flame temperatures are as high as ≈2800 K with near-complete combustion being evident upon examination of the postcombustion products.
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Affiliation(s)
- Haiyang Wang
- Department of Chemical and Environmental Engineering, The University of California, Riverside, CA, 92521, USA
| | - Jinpeng Shen
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Dylan J Kline
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Noah Eckman
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Niti R Agrawal
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Tao Wu
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Peng Wang
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, The University of Maryland, College Park, MD, 20742, USA
| | - Michael R Zachariah
- Department of Chemical and Environmental Engineering, The University of California, Riverside, CA, 92521, USA
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53
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Muravyev NV, Monogarov KA, Schaller U, Fomenkov IV, Pivkina AN. Progress in Additive Manufacturing of Energetic Materials: Creating the Reactive Microstructures with High Potential of Applications. PROPELLANTS EXPLOSIVES PYROTECHNICS 2019. [DOI: 10.1002/prep.201900060] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Nikita V. Muravyev
- Energetic Materials LaboratorySemenov Institute of Chemical Physics RAS 119991 Moscow Russia
| | - Konstantin A. Monogarov
- Energetic Materials LaboratorySemenov Institute of Chemical Physics RAS 119991 Moscow Russia
| | - Uwe Schaller
- Fraunhofer Institute of Chemical Technology ICT D-76327 Pfinztal Germany
| | - Igor V. Fomenkov
- Zelinsky Institute of Organic Chemistry RAS 119991 Moscow Russia
| | - Alla N. Pivkina
- Energetic Materials LaboratorySemenov Institute of Chemical Physics RAS 119991 Moscow Russia
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54
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Super-Efficient Synthesis of Mesh-like Superhydrophobic Nano-Aluminum/Iron (III) Oxide Energetic Films. MATERIALS 2019; 12:ma12020234. [PMID: 30641952 PMCID: PMC6356539 DOI: 10.3390/ma12020234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/15/2018] [Accepted: 12/25/2018] [Indexed: 11/17/2022]
Abstract
In this study, a novel superhydrophobic nano-aluminum/iron (III) oxide composite has been prepared by a facile one-step process of electrophoretic deposition, with wide potential applications. The optimal suspension included ethanol, acetyl-acetone, and the additives of fluorotriphenylsilane and perfluorodecyltriethoxysilane. The microstructure, wettability, and exothermic performance were analyzed by field emission scanning electron microcopy (FESEM), X-ray diffraction (XRD), water contact angle measurements, and the differential scanning calorimetry (DSC) technique. The water contact angle and the heat-release of the target composites could reach to ~170° and 2.67 kJ/g, and could still keep stable, after exposure for six months, showing a great stability. These results provided an exquisite synthesis of ideas, for designing other superhydrophobic energetic materials with self-cleaning properties, for real industrial application.
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Jiang Y, Deng S, Hong S, Zhao J, Huang S, Wu CC, Gottfried JL, Nomura KI, Li Y, Tiwari S, Kalia RK, Vashishta P, Nakano A, Zheng X. Energetic Performance of Optically Activated Aluminum/Graphene Oxide Composites. ACS NANO 2018; 12:11366-11375. [PMID: 30335365 DOI: 10.1021/acsnano.8b06217] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Optical ignition of solid energetic materials, which can rapidly release heat, gas, and thrust, is still challenging due to the limited light absorption and high ignition energy of typical energetic materials ( e.g., aluminum, Al). Here, we demonstrated that the optical ignition and combustion properties of micron-sized Al particles were greatly enhanced by adding only 20 wt % of graphene oxide (GO). These enhancements are attributed to the optically activated disproportionation and oxidation reactions of GO, which release heat to initiate the oxidization of Al by air and generate gaseous products to reduce the agglomeration of the composites and promote the pressure rise during combustion. More importantly, compared to conventional additives such as metal oxides nanoparticles ( e.g., WO3 and Bi2O3), GO has much lower density and therefore could improve energetic properties without sacrificing Al content. The results from Xe flash ignition and laser-based excitation experiments demonstrate that GO is an efficient additive to improve the energetic performance of micron-sized Al particles, enabling micron-sized Al to be ignited by optical activation and promoting the combustion of Al in air.
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Affiliation(s)
| | - Sili Deng
- Department of Mechanical Engineering , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Sungwook Hong
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
| | | | | | - Chi-Chin Wu
- Weapons and Materials Research Directorate , U.S. Army Research Laboratory , Aberdeen Proving Ground, Aberdeen , Maryland 21005 , United States
| | - Jennifer L Gottfried
- Weapons and Materials Research Directorate , U.S. Army Research Laboratory , Aberdeen Proving Ground, Aberdeen , Maryland 21005 , United States
| | - Ken-Ichi Nomura
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
| | - Ying Li
- Computational Science Division and Leadership Computing Facility , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Subodh Tiwari
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
| | - Rajiv K Kalia
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
| | - Priya Vashishta
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
| | - Aiichiro Nakano
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, and Department of Biological Sciences , University of Southern California , Los Angeles , California 90089 , United States
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56
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He W, Liu PJ, Gong F, Tao B, Gu J, Yang Z, Yan QL. Tuning the Reactivity of Metastable Intermixed Composite n-Al/PTFE by Polydopamine Interfacial Control. ACS APPLIED MATERIALS & INTERFACES 2018; 10:32849-32858. [PMID: 30149695 DOI: 10.1021/acsami.8b10197] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The metastable intermixed composite (MIC) is one of the most popular research topics in the field of energetic materials (EMs). The goal is to invent EMs with tunable reactivity and desired energy content. However, it is very difficult to tune the reactivity of MIC due to its high reactivity and sensitivity caused by enlarged specific surface area and intimate contact between the oxidizers and fuels. Herein, we demonstrated a facile fabrication method that can be used to control the reactivity between the nanoaluminum (n-Al) and poly(tetrafluoroethylene) (PTFE) using an in situ-synthesized polydopamine (PDA) binding layer. It was found that PDA can adhere to both n-Al and PTFE particles, resulting in integrated n-Al@PDA/PTFE MICs. In comparison with traditional n-Al/PTFE MICs, the n-Al@PDA/PTFE showed an increased energy release and reduced sensitivity and more importantly tunable reactivity. By regulating the experimental conditions of coating, the thickness of PDA could be well controlled, which makes the tunable reactivity of n-Al@PDA/PTFE possible. The PDA interfacial layer may increase the preignition reaction (PIR) heat of Al2O3/PTFE and therefore the overall reaction heat of n-Al/PTFE. It also reveals that the PDA interfacial layer postponed the PIR, leading to an increase in onset thermal decomposition temperature ( To). As To increased, a more complete reaction between PTFE and Al nanoparticles could be achieved.
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Affiliation(s)
- Wei He
- Science and Technology on Combustion, Internal Flow and Thermo-structure Laboratory , Northwestern Polytechnical University , Xi'an 710072 , China
| | - Pei-Jin Liu
- Science and Technology on Combustion, Internal Flow and Thermo-structure Laboratory , Northwestern Polytechnical University , Xi'an 710072 , China
| | - Feiyan Gong
- Institute of Chemical Materials , CAEP , Mianyang , 621900 , China
| | - Bowen Tao
- Science and Technology on Aerospace Chemical Power Laboratory , Xiangyang 441003 , China
| | - Jian Gu
- Science and Technology on Aerospace Chemical Power Laboratory , Xiangyang 441003 , China
| | - Zhijian Yang
- Institute of Chemical Materials , CAEP , Mianyang , 621900 , China
| | - Qi-Long Yan
- Science and Technology on Combustion, Internal Flow and Thermo-structure Laboratory , Northwestern Polytechnical University , Xi'an 710072 , China
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