Synthesis of different morphology nano-CuO and its effect on the thermal decomposition of ammonium perchlorate (AP)

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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The fabrication of novel Cu2(NO3)(OH)3/g-C3N4 catalyst for the thermal decomposition of ammonium perchlorate

Journal of Solid State Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 125330 - 125330

Published: March 1, 2025

Language: Английский

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Optimizing Combustion Characteristics of Ammonium Perchlorate Composites with Nickel-Enhanced Carboxymethyl Cellulose

Aerospace, Journal Year: 2025, Volume and Issue: 12(4), P. 270 - 270

Published: March 23, 2025

This study investigates the impact of nickel doping on thermal and combustion properties ammonium perchlorate/carboxymethyl cellulose (AP/CMC) composites. Through comprehensive SEM-EDS, FTIR, XRD, DSC, TGA, burning rate analyses, significant improvements in structural functional characteristics AP/CMC-Ni composite were observed compared to those pure AP AP/CMC The SEM-EDS analysis revealed that incorporation resulted thicker more irregular CMC fibers, indicating substantial morphological changes. FTIR spectroscopy showed shifts O-H C=O stretching bands, pointing interactions between ions groups. XRD patterns highlighted a decrease crystallinity presence NiO phases, confirming successful integration into matrix. demonstrated significantly lowered decomposition temperature composite, as evidenced by enhances degradation process, shown TGA. exhibited higher across all tested pressures, highlighting catalytic effect improving efficiency. for follows power-law expression with constants = 2.34 n 0.499, while AP/CMC-Ni, are 3.35 0.475. highlights essential role facilitating within composite. By lowering temperature, overall making efficient applications requiring controlled decomposition. These findings provide valuable insights design development high-performance materials advanced industrial applications.

Language: Английский

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HTPB propellant aging mechanisms and safety characteristics: microscopic structural changes, thermal stability, and self-accelerating decomposition temperature

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 106295 - 106295

Published: May 1, 2025

Language: Английский

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Analysis of thermal stability for slow burning propellant based on isothermal testing: Self‐accelerating decomposition temperature (SADT) calculation and validation

Propellants Explosives Pyrotechnics, Journal Year: 2024, Volume and Issue: 49(9)

Published: Aug. 7, 2024

Abstract Burning rate suppressants (BRSs) refer to a series of additives that reduce the burning propellants, crucial for achieving sustained and stable thrust. This research focuses on assessing impact ammonium sulfate oxalate thermal stability their potential as BRSs. Due stronger inhibitory effect AP proton transfer process, activation energy propellant's first decomposition can be increased from 94.71 kJ mol −1 129.69 at 3 % addition level. Based Semenov model, self‐accelerated temperatures (TSADT) were calculated validated through 7‐day isothermal test. Introducing raised TSADT 197.31 °C 220.90 215.06 °C, respectively, deviating less than 4 experimental results. Among propellants tested, those with showed prolonged response delay times (44.43–33.60 h), lower superheating (222.8–445.5 °C), reduced mass loss rates (33.0–71.4 %) after 7 days storage 220–240 °C. The consistency between analysis test underscores significant stability.

Language: Английский

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Traditional vs. Energetic and Perchlorate vs. “Green”: A Comparative Study of the Choice of Binders and Oxidising Agents

Molecules, Journal Year: 2023, Volume and Issue: 28(15), P. 5787 - 5787

Published: July 31, 2023

The aim of this article is to compare rocket propellants containing a traditional binder (hydroxyl-terminated polybutadiene) and an energetic (glycidyl azide polymer), as well perchlorate oxidising agent "green" one, i.e., ammonium phase-stabilised nitrate. We have outlined the effects individual substances on sensitivity parameters decomposition temperature produced solid propellants. linear combustion velocity was determined using electrical methods. Heats for propellant samples thermal features utilised binders were investigated via differential scanning calorimetry (DSC). Activation energy values Kissinger method, based DSC measurements at varied heating rates.

Language: Английский

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Adaptive plc intelligent control based on the integrated system of smart grid thermal energy conversion

Thermal Science, Journal Year: 2024, Volume and Issue: 28(2 Part B), P. 1337 - 1345

Published: Jan. 1, 2024

During the construction of smart grids, due to technological limitations, traditional sequential control systems have been unable meet needs grid operation, exposing problems such as single methods and functions, low operational efficiency, inability independently complete complex tasks, poor anti-interference ability, which in turn affect power supply quality stability grid, fail truly achieve reliability, safety, reliability grids Economic efficient goals. For this purpose, author describes an adaptive intelligent method for integrated biomass energy heat conversion system consisting more than one suction gasifier, gas burner, steam boiler. The uses PLC a tool takes boiler outlet pressure parameter. Based on changes pressure, it automatically adjusts feed production subsequently air burner. Ultimately, achieves goal adjusting heating volume with pressure. based gasification has reliably verified industrial applications.

Language: Английский

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The Fabrication of Novel Cu2(No3)(Oh)3/G-C3n4 Catalyst for the Thermal Decomposition of Ammonium Perchlorate

Published: Jan. 1, 2024

Language: Английский

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