Thermal degradation kinetics of insulating/conducting epoxy/Zn composites under nonisothermal conditions

Thermal degradation kinetics of insulating/conducting epoxy/Zn composites under nonisothermal conditions

This article deals with the nonisothermal degradation kinetics of insulating and conducting epoxy/Zn composites. A comparison of thermal degradation data obtained from epoxy/Zn composites revealed that the addition of zinc content in epoxy significantly increases its degradation rate. However, the z...

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Bibliographic Details
Published in:Polymer composites Vol. 34; no. 12; pp. 2049 - 2060
Main Authors: Arshad, M. Azeem, Maaroufi, A., Benavente, R., Pereña, J.M., Pinto, G.
Format: Journal Article
Language:English
Published: Hoboken, NJ Blackwell Publishing Ltd 01-12-2013
Wiley
Subjects:
Applied sciences
Composites
Conduction
Degradation
Diffraction
Exact sciences and technology
Forms of application and semi-finished materials
Insulators
Polymer industry, paints, wood
Polymer matrix composites
Reaction kinetics
Technology of polymers
Thermal degradation
Zinc
Conducting material
Epoxy resin
Experimental study
Metal particle
Modeling
Composite material
Thermal stability
Zinc
Thermal properties
Kinetic model
Morphology
Non isothermal condition
Reaction mechanism
Kinetics
Activation energy
Thermal degradation
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Summary:This article deals with the nonisothermal degradation kinetics of insulating and conducting epoxy/Zn composites. A comparison of thermal degradation data obtained from epoxy/Zn composites revealed that the addition of zinc content in epoxy significantly increases its degradation rate. However, the zinc content activates the degradation until its melting point (419.5°C) and then it starts stabilizing the matrix due to its higher specific heat in molten state. Kinetics of the phenomena fairly explains this behavior in terms of the comparison of general kinetic equations for epoxy/Zn composites. It is to notice that both the values of effective activation energy and reaction model (Šestâk Berggren/SB‐m, n) for insulator/conductor composite pair have been found almost the same emphasizing upon negligible polymer–metal interactions in both cases. These mechanistic clues derived from comparative kinetic study have been found in good agreement with the results obtained through morphological analysis of samples by scanning electron microscopy and X‐ray diffraction techniques. POLYM. COMPOS., 34:2049–2060, 2013. © 2013 Society of Plastics Engineers
Bibliography:ark:/67375/WNG-0PKQ5XNV-N
istex:EFC1206EC9DC51F937D91228343AD64ADE7D933D
ArticleID:PC22613
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.22613