Energetic fuel applicability of waste-derived active Al@FOC/PIL micro-assemblies supported by Fe and Ni with enhanced combustion properties through modulated surface-thermochemical reactions

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2024-05-23 DOI:10.1016/j.powtec.2024.119917

Virendrakumar G. Deonikar, Hern Kim

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Abstract

Reactive aluminium (Al) powders, which are used in propellants and explosives, require the active support of strong oxidizers to break Al oxide layer and better surface thermochemical reaction. Considering this, current work demonstrates the improved ignition and combustibility of the recycled Al powder modified with various fluorinated and polyphenolic interfacial layers and reactive metals. The better activity was owned by the Al@PD/TA/Fe sample. The DSC result of the Al@PD/TA/Fe sample revealed the oxidation of PVDF at 341.56 °C and surface oxidation of Al at a temperature of 426.81 °C. The decomposition of fluoropolymer at lower temperature facilitated the prompt surface oxidation of Al followed by efficient rupture of the oxide layer which promoted the pre-ignition reaction of Al. Based on the results, combustion mechanism has been proposed. The ignition test of the Al@PD/TA/Fe sample has shown the rapid ignition luminous streaks and claims its potential candidature for solid fuel application.

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以铁和镍为支撑的废物衍生活性 Al@FOC/PIL 微型组件的能源燃料适用性，通过调节表面热化学反应增强燃烧性能

用于推进剂和炸药的反应性铝（Al）粉末需要强氧化剂的积极支持，以打破铝氧化层并更好地进行表面热化学反应。有鉴于此，目前的研究表明，经过各种氟化和多酚界面层以及活性金属改性的回收铝粉的点火和燃烧性得到了改善。Al@PD/TA/Fe 样品具有更好的活性。Al@PD/TA/Fe 样品的 DSC 结果显示，PVDF 在 341.56 ℃ 发生氧化，Al 在 426.81 ℃ 发生表面氧化。含氟聚合物在较低温度下的分解促进了铝的迅速表面氧化，随后氧化层的有效破裂促进了铝的预点火反应。根据这些结果，提出了燃烧机理。Al@PD/TA/Fe 样品的点火测试显示出快速点火的发光条纹，这表明它有可能成为固体燃料应用的候选材料。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.

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