Highly Reactive Metastable Intermixed Composites (MICs): Preparation and Characterization

Advanced Materials, Journal Year: 2018, Volume and Issue: 30(41)

Published: June 3, 2018

Highly reactive metastable intermixed composites (MICs) have attracted much attention in the past decades. The MIC family of materials mainly includes traditional metal-based nanothermites, novel core-shell-structured, 3D ordered macroporous-structured, and ternary nanocomposites. By applying special fabrication approaches, highly MICs with uniformly dispersed reactants, "layer-by-layer" or "core-shell" structures, can be prepared. Thus, combustion performance greatly improved, ignition characteristics safety precisely controlled by using a certain preparation strategy. Here, characterization that been developed during few decades are summarized. Traditional methods for generally include physical mixing, high-energy ball milling, sol-gel synthesis, vapor deposition, while self-assembly, electrophoretic electrospinning. Various procedures different systems compared discussed. In particular, advantages structured terms efficiency clarified, based on which suggestions regarding possible future research directions proposed.

Language: Английский

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Potential of fat, oil and grease (FOG) for biodiesel production: A critical review on the recent progress and future perspectives

Progress in Energy and Combustion Science, Journal Year: 2020, Volume and Issue: 81, P. 100868 - 100868

Published: June 23, 2020

Language: Английский

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Tuning the Reactivity of Metastable Intermixed Composite n-Al/PTFE by Polydopamine Interfacial Control

ACS Applied Materials & Interfaces, Journal Year: 2018, Volume and Issue: 10(38), P. 32849 - 32858

Published: Aug. 28, 2018

The metastable intermixed composite (MIC) is one of the most popular research topics in field energetic materials (EMs). goal to invent EMs with tunable reactivity and desired energy content. However, it very difficult tune MIC due its high sensitivity caused by enlarged specific surface area intimate contact between oxidizers fuels. Herein, we demonstrated a facile fabrication method that can be used control nanoaluminum (n-Al) poly(tetrafluoroethylene) (PTFE) using an situ-synthesized polydopamine (PDA) binding layer. It was found PDA adhere both n-Al PTFE particles, resulting integrated n-Al@PDA/PTFE MICs. In comparison traditional n-Al/PTFE MICs, showed increased release reduced more importantly reactivity. By regulating experimental conditions coating, thickness could well controlled, which makes possible. interfacial layer may increase preignition reaction (PIR) heat Al2O3/PTFE therefore overall n-Al/PTFE. also reveals postponed PIR, leading onset thermal decomposition temperature (To). As To increased, complete Al nanoparticles achieved.

Language: Английский

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Fabrication of high-performance graphene oxide doped PVDF/CuO/Al nanocomposites via electrospinning

Chemical Engineering Journal, Journal Year: 2019, Volume and Issue: 368, P. 129 - 137

Published: Feb. 25, 2019

Language: Английский

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Thermal decomposition of energetic materials using TG-FTIR and TG-MS: a state-of-the-art review

Applied Spectroscopy Reviews, Journal Year: 2019, Volume and Issue: 55(8), P. 724 - 777

Published: Oct. 23, 2019

Energetic materials have been widely investigated experimentally and theoretically for decades, but there are still many unanswered questions concerning their thermal decomposition mechanisms that play a key role in the overall reaction processes. Hyphenated analytical techniques of analysis, such as thermogravimetry coupled either with infrared (TG-FTIR) or mass spectroscopies (TG-MS) revealed to be efficient methods studying mechanisms. These allow exploration evolved gases during decomposition, which let trace back chemical allows better control behavior various energetic formulations. In this overview, classification, characterization properties material introduced. Next, advances application two hyphenated (TG-FTIR TG-MS) along appropriate examples discussed. offer remarkable improvements by enhancing amount authentic information obtained reproducibility compared conventional techniques. This first review article dedicated solely TG on-line an IR MS spectrometer, means heater transfer line, will certainly help researchers easily understand well development new applications.

Language: Английский

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Highly Energy Release of Aluminum@Ammonium Perchlorate Composites Incorporated with Graphene Oxide‐based Energetic Coordination Polymer

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Achieving high energy release of aluminum (Al) and ammonium perchlorate (AP) is significant importance in the realm materials. In this work, integrated Al@AP/GO‐CHZ‐M (M = Co 2+ or Ni ) composites are successfully synthesized through an design precise catalysis approach. The Al@AP/Co exhibit fast decomposition, with a 76.6 °C reduction decomposition temperature 66.0% increase heat compared to Al+AP mixture counterpart. From kinetic perspective, activation for largely decreased by 215.5 kJ mol −1 (−67.4%) its kinetics shifted autocatalytic model. Transition metals GO‐CHZ‐M facilitate proton transfer during AP, significantly increasing yield low‐valence nitrogen oxides. ignition Al@AP/M enhanced, 37.2 ms (−40.2%) delay 6.6‐fold radiation intensity over Al+AP. change from deflagration physical detonation further suggests release. Furthermore, mechanism on enhancement Al@AP elucidated. This approach holds broad application prospects fields solid propellants, aluminized explosives, micro‐thrusters, pyrotechnics systems.

Language: Английский

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Thermal behavior and decomposition kinetics of composite solid propellants in the presence of amide burning rate suppressants

Journal of Thermal Analysis and Calorimetry, Journal Year: 2018, Volume and Issue: 132(3), P. 1601 - 1615

Published: March 10, 2018

Language: Английский

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Facet effect of Co3O4 nanocatalysts on the catalytic decomposition of ammonium perchlorate

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 392, P. 122358 - 122358

Published: Feb. 19, 2020

Language: Английский

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Overview of Al-based nanoenergetic ingredients for solid rocket propulsion

Defence Technology, Journal Year: 2018, Volume and Issue: 14(5), P. 357 - 365

Published: June 8, 2018

The introduction of nano-sized energetic ingredients first occurred in Russia about 60 years ago and arose great expectations the rocket propulsion community, thanks to higher energy densities faster release rates exhibited with respect conventional ingredients. But, despite intense worldwide research programs, still today mostly laboratory level applications are reported often for scientific purposes only. A number practical reasons prevent at industrial level: inert native coating particles, nonuniform dispersion, aging, excessive viscosity slurry propellant, possible limitations mechanical properties, more demanding safety issues, cost, so on. This paper describes main features terms performance solid propellants loaded nanometals intends emphasize unique properties or operating conditions made by addition Steady unsteady combustion regimes examined.

Language: Английский

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Thermal decomposition and combustion performance of high-energy ammonium perchlorate-based molecular perovskite

Journal of Alloys and Compounds, Journal Year: 2020, Volume and Issue: 827, P. 154257 - 154257

Published: Feb. 11, 2020

Language: Английский

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