Investigation of the ignition and combustion of compressed aluminum/polytetrafluoroethylene bulk composites

Xu yuan Zhou; Fei Xiao; Rong jie Yang; Feng lei Huang; Jian min Li

doi:10.1007/s10973-019-08662-2

Investigation of the ignition and combustion of compressed aluminum/polytetrafluoroethylene bulk composites

Xu yuan Zhou, Fei Xiao, Rong jie Yang^*, Feng lei Huang, Jian min Li

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The thermal pyrolysis process of mold-compressed Al/PTFE composites has been investigated. TG–DSC analysis of the Al/PTFE composites revealed a slight exothermic pre-reaction in the range 500–600 °C. Based on XRD and XPS analyses of Al/PTFE composites subjected to heat treatment at 500–600 °C, this pre-reaction is believed to be fluoridation of the alumina passivating layer on the surface of Al particles. This fluoridation has been confirmed to be a crucial factor in triggering the ignition of aluminum particles in an O₂ flow at a temperature much lower than the melting point of aluminum (660 °C). The energetic properties of the Al/PTFE composites have been studied, and the compositions of their combustion residues have been analyzed by XRD. The results indicated that the energy release from the composites and the compositions of their solid combustion residues were determined by their PTFE contents. Composition analysis of these combustion residues has revealed the formation of AlF₃, Al₂O₃, Al₄C₃, and amorphous carbon.

Original language	English
Pages (from-to)	3013-3021
Number of pages	9
Journal	Journal of Thermal Analysis and Calorimetry
Volume	139
Issue number	5
DOIs	https://doi.org/10.1007/s10973-019-08662-2
Publication status	Published - 1 Mar 2020

Keywords

Al/PTFE composite
Aluminum
Combustion
Ignition
Pre-reaction

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10.1007/s10973-019-08662-2

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title = "Investigation of the ignition and combustion of compressed aluminum/polytetrafluoroethylene bulk composites",

abstract = "The thermal pyrolysis process of mold-compressed Al/PTFE composites has been investigated. TG–DSC analysis of the Al/PTFE composites revealed a slight exothermic pre-reaction in the range 500–600 °C. Based on XRD and XPS analyses of Al/PTFE composites subjected to heat treatment at 500–600 °C, this pre-reaction is believed to be fluoridation of the alumina passivating layer on the surface of Al particles. This fluoridation has been confirmed to be a crucial factor in triggering the ignition of aluminum particles in an O2 flow at a temperature much lower than the melting point of aluminum (660 °C). The energetic properties of the Al/PTFE composites have been studied, and the compositions of their combustion residues have been analyzed by XRD. The results indicated that the energy release from the composites and the compositions of their solid combustion residues were determined by their PTFE contents. Composition analysis of these combustion residues has revealed the formation of AlF3, Al2O3, Al4C3, and amorphous carbon.",

keywords = "Al/PTFE composite, Aluminum, Combustion, Ignition, Pre-reaction",

author = "Zhou, {Xu yuan} and Fei Xiao and Yang, {Rong jie} and Huang, {Feng lei} and Li, {Jian min}",

note = "Publisher Copyright: {\textcopyright} 2019, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary.",

year = "2020",

month = mar,

day = "1",

doi = "10.1007/s10973-019-08662-2",

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T1 - Investigation of the ignition and combustion of compressed aluminum/polytetrafluoroethylene bulk composites

AU - Zhou, Xu yuan

AU - Xiao, Fei

AU - Yang, Rong jie

AU - Huang, Feng lei

AU - Li, Jian min

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The thermal pyrolysis process of mold-compressed Al/PTFE composites has been investigated. TG–DSC analysis of the Al/PTFE composites revealed a slight exothermic pre-reaction in the range 500–600 °C. Based on XRD and XPS analyses of Al/PTFE composites subjected to heat treatment at 500–600 °C, this pre-reaction is believed to be fluoridation of the alumina passivating layer on the surface of Al particles. This fluoridation has been confirmed to be a crucial factor in triggering the ignition of aluminum particles in an O2 flow at a temperature much lower than the melting point of aluminum (660 °C). The energetic properties of the Al/PTFE composites have been studied, and the compositions of their combustion residues have been analyzed by XRD. The results indicated that the energy release from the composites and the compositions of their solid combustion residues were determined by their PTFE contents. Composition analysis of these combustion residues has revealed the formation of AlF3, Al2O3, Al4C3, and amorphous carbon.

AB - The thermal pyrolysis process of mold-compressed Al/PTFE composites has been investigated. TG–DSC analysis of the Al/PTFE composites revealed a slight exothermic pre-reaction in the range 500–600 °C. Based on XRD and XPS analyses of Al/PTFE composites subjected to heat treatment at 500–600 °C, this pre-reaction is believed to be fluoridation of the alumina passivating layer on the surface of Al particles. This fluoridation has been confirmed to be a crucial factor in triggering the ignition of aluminum particles in an O2 flow at a temperature much lower than the melting point of aluminum (660 °C). The energetic properties of the Al/PTFE composites have been studied, and the compositions of their combustion residues have been analyzed by XRD. The results indicated that the energy release from the composites and the compositions of their solid combustion residues were determined by their PTFE contents. Composition analysis of these combustion residues has revealed the formation of AlF3, Al2O3, Al4C3, and amorphous carbon.

KW - Al/PTFE composite

KW - Aluminum

KW - Combustion

KW - Ignition

KW - Pre-reaction

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DO - 10.1007/s10973-019-08662-2

M3 - Article

AN - SCOPUS:85071429392

SN - 1388-6150

VL - 139

SP - 3013

EP - 3021

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

IS - 5

ER -

Investigation of the ignition and combustion of compressed aluminum/polytetrafluoroethylene bulk composites

Abstract

Keywords

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