Microfluidic preparation and thermal properties of HMX@PDA@MO DOI Open Access

Jun Yu,

Erdong Yao, XU Shi-liang

et al.

Journal of Physics Conference Series, Journal Year: 2023, Volume and Issue: 2478(4), P. 042013 - 042013

Published: June 1, 2023

Abstract Metal oxides can effectively promote the thermal decomposition of energetic materials. However, traditional physical mixing process has potential safety hazards and cannot achieve uniform stable coating. To address this issue, study provides adhesion sites for metal through rough coating formed by polydopamine on surface HMX, which improves stability. Taking advantage efficient microfluidic technology, HMX@PDA@MO samples with good dispersion were prepared. The characterized SEM-EDS, XRD DSC. results demonstrate successful preparation HMX@PDA@CuO HMX@PDA@PbO samples. SEM-EDS images show that forms a increase in total flow rate is beneficial to enhance oxides. DSC data showed addition 3% 20% CuO advanced temperature apparent activation energy HMX@PDA 0.3K, 40.13 kJ·mol −1 2K, 108.83 , respectively, PbO 0.1K, 111.94 4.5K, 205.02 . It shows oxide content will decomposition. For better catalytic activity than CuO. HMX.

Language: Английский

Insight into energy release characteristics of TiH2 dust explosion through ignition experiments and molecular dynamic simulations DOI
Ting Zhang,

Jiefan Zhang,

Shuang Geng

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 185, P. 853 - 863

Published: March 19, 2024

Language: Английский

Citations

23
Effects of RDX and HMX on the thermal stability properties of modified double-base propellants DOI Creative Commons

Yun Zhang,

Runqing Liu, Weiguo Cao

et al.

FirePhysChem, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

2
New insights in nano-copper chromite catalyzing ultrafine AP: Evaluation of dispersity and mixing uniformity DOI Creative Commons

Yong Kou,

Peng Luo, Lei Xiao

et al.

Defence Technology, Journal Year: 2023, Volume and Issue: 32, P. 120 - 133

Published: April 8, 2023

Improving the application of nanomaterials has always been a research hotspot in field energetic materials (EMs) due to their obvious catalytic effect on EMs, especially uniformly dispersed nanomaterials. However, few studies have reported dispersion In this study, dispersity and mixing uniformity nano-CuCr2O4 was evaluated based difference solid UV light absorption between nano-catalytic EMs. The nano-CuCr2O4/ultrafine AP composites with different were prepared by manual grinding mechanical strength griding time. And then, absorbance samples at 212 nm obtained testing high repeatability 210–214 for three parallel experiments, calculated through established equation. Furthermore, characterized XRD, IR, SEM, EDS, DSC TG-MS, which confirmed that methods did not change structure (XRD IR), improved increase time (SEM EDS). scientificity feasibility equation further verified DSC. exhibits positive intrinsic relationship its performance, significantly reduces thermal decomposition temperature ultrafine from 367.7 338.8 °C. TG-MS patterns show advanced process about 700 s, stage, more concentrated energy release characteristic is beneficial enhance performance AP-based propellants. above conclusions evaluation method curves could provide new ideas characterization expected be widely used

Language: Английский

Citations

41
Thermal decomposition behavior and kinetic study of nitrocellulose in presence of ternary nanothermites with different oxidizers DOI Creative Commons
Slimane Bekhouche, Djalal Trache, Hamdane Akbi

et al.

FirePhysChem, Journal Year: 2023, Volume and Issue: 3(3), P. 208 - 216

Published: Feb. 11, 2023

Nanothermites have recently attracted a great deal of interest in both military and civilian domains owing to their capability igniting or exploding releasing significant quantity heat via redox reaction. In this study, three ternary nanothermites, which contain MgAl alloy as fuel different metal oxides (MXOY = CuO, NiO, TiO2) oxidizers, were prepared through the arrested reactive milling technique. These metastable intermolecular composites introduced nitrocellulose (NC), using fast solution drying technique, assess catalytic behavior. The as-obtained energetic composites, namely, NC/MgAl-MXOY, scrutinized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), powder X-ray diffraction (XRD), differential calorimetry (DSC). ignition delay time NC/MgAl-MXOY composite films was also determined, results revealed positive effect introduction nanothermite decrease its value compared pure NC. Using isoconversional kinetic analysis, Arrhenius parameters associated with thermal decomposition evaluated. findings indicated that choice oxidizer within composition significantly influences behavior composites. Based on obtained results, MgAl-CuO provides better performance than MgAl-NiO MgAl-TiO2 nanoparticles.

Language: Английский

Citations

25
Pseudo‐Oxide Metal Carbodiimides: Potential Burn Rate Modifier for the Decomposition of Ammonium Perchlorate DOI Open Access
Zili Ma, Yanjun Yin, Yue Yin

et al.

Propellants Explosives Pyrotechnics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 22, 2025

ABSTRACT As a strong oxidizer, ammonium perchlorate (AP) is one of the most paramount raw materials in composite solid propellants (CSP) formulations, and thermal decomposition features AP would directly impact energy release impulsion performance CSP. CuNCN as an example metal carbodiimides explored burn rate modifier for decomposition, given their oxide counterpart belonging to typical modifiers. Our results reveal that as‐prepared can effectively accelerate AP. The additive mixture reduce activation bring down HTD by 84°C. present study highlights on effective application thermally enhanced

Language: Английский

Citations

1
Effect of the accelerated aging process on the thermal decomposition of LiAlH4-based composite solid propellants DOI Creative Commons

Fateh Chalghoum,

Mohammed Jouini,

Amir Abdelaziz

et al.

FirePhysChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

In the present work, a study was carried out on effect of accelerated aging process thermal decomposition two composite solid propellants based ammonium perchlorate (AP) and hydroxy-terminated polybutadiene (HTPB). The first one (CP1) enriched with aluminum (Al) powders, while second (CP2) contained mixture lithium alanate (LiAlH4) as high-energy fuel additive. properties investigated propellant samples were determined using differential scanning calorimetry (DSC) thermogravimetry (TG) techniques. obtained results clearly demonstrated degradation aged compared to unaged ones, by shifting temperature peaks their main step lower temperatures decrease in DSC heat release. addition, residual unburnt increased, particularly for complex metal hydride-based propellant. Kinetic modeling phase, applying advanced isoconversional methods, revealed significant activation energy samples. Furthermore, three-dimensional diffusion model involved during phase changed random nucleation after 60 days time.

Language: Английский

Citations

7
Graphene oxide based nickel–copper–zinc and copper–zinc cobaltite: catalysts for the thermolysis of ammonium perchlorate and nitrotriazolone DOI Creative Commons
Pragnesh N. Dave, Ruksana Sirach

Energy Advances, Journal Year: 2023, Volume and Issue: 2(5), P. 679 - 690

Published: Jan. 1, 2023

Cobaltites NiCuZnCo 2 O 4 and CuZnCo their mixture with GO can efficiently reduce the thermal decomposition temperature activation energy of high energetic material ammonium perchlorate nitrotriazolone.

Language: Английский

Citations

16
TG-MS study on the activity of Fe, Co, Ni, Cu, and Zn nanometal catalysts on thermal decomposition of ammonium perchlorate DOI

Parvathy Chandrababu,

Sreeja Beena,

Deepthi Thomas

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2023, Volume and Issue: 148(19), P. 10065 - 10079

Published: Aug. 11, 2023

Language: Английский

Citations

11
Research progress of EMOFs-based burning rate catalysts for solid propellants DOI Creative Commons
Bojun Tan, Xiong Yang, Jinkang Dou

et al.

Frontiers in Chemistry, Journal Year: 2022, Volume and Issue: 10

Published: Oct. 13, 2022

Energetic Metal Organic Frameworks (EMOFs) have been a hotspot of research on solid propellants in recent years. In this paper, the application EMOFs-based burning rate catalysts was reviewed and development trend these explored. The analyzed included monometallic organic frameworks-based energetic catalysts, bimetallic multifunctional carbon-supported EMOFs that can be used conjunction with EMOFs. review suggest relatively simple catalytic effects, adding metal salts improve their effect. Bimetallic excellent performance potential for broad application. investigation is still at preliminary stage, but preparation become focus catalyst field. compounded should promoted. Finally, environmental protection, high energy low sensitivity, nanometerization, compounding solvent-free are proposed as key directions future research. This study aims to provide reference propellants.

Language: Английский

Citations

19
Biofuels and Nanocatalysts: Python Boosting Visualization of Similarities DOI Open Access
Fernando Gomes de Souza, Kaushik Pal, Jeffrey Dankwa Ampah

et al.

Materials, Journal Year: 2023, Volume and Issue: 16(3), P. 1175 - 1175

Published: Jan. 30, 2023

Among the most relevant themes of modernity, using renewable resources to produce biofuels attracts several countries' attention, constituting a vital part global geopolitical chessboard since humanity's energy needs will grow faster and faster. Fortunately, advances in personal computing associated with free open-source software production facilitate this work prospecting understanding complex scenarios. Thus, for development work, keywords "biofuel" "nanocatalyst" were delivered Scopus database, which returned 1071 scientific articles. The titles abstracts these papers saved Research Information Systems (RIS) format submitted automatic analysis via Visualization Similarities Method implemented VOSviewer 1.6.18 software. Then, data extracted from processed by written Python, allowed use network generated Method. it was possible establish relationships pair between nodes all clusters classified Link Strength Between Items or Terms (LSBI) year. Indeed, other associations should arouse particular interest readers. However, here, option numerical criterion. are freely available, stakeholders can infer specific connections directly. Therefore, innovative approach inferring that recent pairs terms associate need microorganisms' oils besides cerium oxide nanoparticles improve performance fuel mixtures reducing emission hydrocarbons (HC) oxides nitrogen (NOx).

Language: Английский

Citations

11