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Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance

Energetic composites composed of polymeric binders and metallic fuels are widely used in industrial and military fields, and their performance is largely dependent on the combustion process. Fluorinated energetic polymeric binders can facilitate the combustion of metallic fuels such as aluminum part...

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Detalles Bibliográficos
Autores principales: Tang, Gang, Wang, He, Chen, Chunyan, Xu, Yabei, Chen, Dongping, Wang, Dongli, Luo, Yunjun, Li, Xiaoyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9403818/
https://www.ncbi.nlm.nih.gov/pubmed/36128536
http://dx.doi.org/10.1039/d2ra03781e
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author Tang, Gang
Wang, He
Chen, Chunyan
Xu, Yabei
Chen, Dongping
Wang, Dongli
Luo, Yunjun
Li, Xiaoyu
author_facet Tang, Gang
Wang, He
Chen, Chunyan
Xu, Yabei
Chen, Dongping
Wang, Dongli
Luo, Yunjun
Li, Xiaoyu
author_sort Tang, Gang
collection PubMed
description Energetic composites composed of polymeric binders and metallic fuels are widely used in industrial and military fields, and their performance is largely dependent on the combustion process. Fluorinated energetic polymeric binders can facilitate the combustion of metallic fuels such as aluminum particles and enhance the energetic level of the energetic composites. In this report, fluorinated energetic polyurethanes (FPUs) were applied as binders for energetic composites with aluminum nanoparticles (AlNPs). The fluorinated components in the energetic binder could be a uniform dispersion inside the composites, endowing the composites with decent mechanical properties and high combustion rate. Most significantly, compared with the composites without fluorine, FPU/AlNP energetic composites not only showed a remarkably improved combustion efficiency, but also, surprisingly, a dramatic enhancement in the heat of explosion by 91.2%, despite the low content of fluorine. By analyzing the combustion products together with kinetic simulations derived from chemical reaction neural network (CRNN) modelling, a detailed mechanistic understanding of the combustion process was provided, suggesting the importance of synergistic effects brought by the fluorinated and energetic components.
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spelling pubmed-94038182022-09-19 Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance Tang, Gang Wang, He Chen, Chunyan Xu, Yabei Chen, Dongping Wang, Dongli Luo, Yunjun Li, Xiaoyu RSC Adv Chemistry Energetic composites composed of polymeric binders and metallic fuels are widely used in industrial and military fields, and their performance is largely dependent on the combustion process. Fluorinated energetic polymeric binders can facilitate the combustion of metallic fuels such as aluminum particles and enhance the energetic level of the energetic composites. In this report, fluorinated energetic polyurethanes (FPUs) were applied as binders for energetic composites with aluminum nanoparticles (AlNPs). The fluorinated components in the energetic binder could be a uniform dispersion inside the composites, endowing the composites with decent mechanical properties and high combustion rate. Most significantly, compared with the composites without fluorine, FPU/AlNP energetic composites not only showed a remarkably improved combustion efficiency, but also, surprisingly, a dramatic enhancement in the heat of explosion by 91.2%, despite the low content of fluorine. By analyzing the combustion products together with kinetic simulations derived from chemical reaction neural network (CRNN) modelling, a detailed mechanistic understanding of the combustion process was provided, suggesting the importance of synergistic effects brought by the fluorinated and energetic components. The Royal Society of Chemistry 2022-08-25 /pmc/articles/PMC9403818/ /pubmed/36128536 http://dx.doi.org/10.1039/d2ra03781e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Tang, Gang
Wang, He
Chen, Chunyan
Xu, Yabei
Chen, Dongping
Wang, Dongli
Luo, Yunjun
Li, Xiaoyu
Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title_full Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title_fullStr Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title_full_unstemmed Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title_short Thermal decomposition of nano Al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
title_sort thermal decomposition of nano al-based energetic composites with fluorinated energetic polyurethane binders: experimental and theoretical understandings for enhanced combustion and energetic performance
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9403818/
https://www.ncbi.nlm.nih.gov/pubmed/36128536
http://dx.doi.org/10.1039/d2ra03781e
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