Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 92: Issue 3
Dynamic mechanical properties of epoxy/novolac system modified with reactive liquid rubber and carbon filler
Authors:
Urszula Szeluga Polish Academy of Sciences Centre of Polymer and Carbon Materials Curie-Skłodowskiej 34 Zabrze Poland

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,
Lidia Kurzeja

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, and
H. Galina University of Technology Faculty of Chemistry Powstañców Warszawy 6 35-959 Rzeszów Poland

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Pages:
813–820
Online Publication Date:
02 Jul 2008
Publication Date:
01 Jun 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8669-4
Keywords:
activation energy of molecular relaxation; dynamic mechanical thermal analysis; epoxy resins; fillers; reactive rubber; WLF equation
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Abstract  

This paper reports on the work carried out to evaluate the frequency dependent viscoelastic properties of epoxy/novolac compositons modified with a liquid reactive rubber and carbon filler. For epoxy systems modified with elastomer, three typical transitions were observed: the α-relaxation deeply related to the glass transition of epoxy, the β-transition of epoxy, and the glass transition of rubber appeared near to the β-relaxation of epoxy resin. Considering an Arrhenius equation, the activation energies of β-relaxation were estimated. In the region of glass transition and rubbery state the temperature dependence of the shift factor (αT) was determined through Williams-Landel-Ferry (WLF) equation.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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