The effect of graphite functionalization on electrical and shielding properties of epoxy composites

Composite materials (CMs) based on epoxy resin and functionalized thermoexfoliated graphite (TEG) were prepared. The composition of functional groups at the TEG surface was characterized by FTIR spectroscopy. It was found that some of CMs with pristine TEG have high shielding efficiency in the regio...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2016-11, Vol.639 (1), p.94-104
Main Authors: Lazarenko, Oleksandra, Vovchenko, Ludmila, Perets, Yulia, Yakovenko, Olena, Ovsiienko, Iryna, Oliynyk, Viktor, Melnychenko, Mykola, Matzui, Ludmila
Format: Article
Language:English
Subjects:
Conductivity
Crystals
Efficiency
Electric properties
electrical conductivity
Epoxy coatings
Fourier transforms
functionalization
Graphite
Heterogeneity
Infrared spectroscopy
Liquid crystals
Nanostructured materials
Nanostructures
Polymer matrix composites
Polymers
shielding efficiency
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Summary:Composite materials (CMs) based on epoxy resin and functionalized thermoexfoliated graphite (TEG) were prepared. The composition of functional groups at the TEG surface was characterized by FTIR spectroscopy. It was found that some of CMs with pristine TEG have high shielding efficiency in the region of electromagnetic radiation frequency from 25.5 to 37.5 GHz. But the main disadvantage of these CMs is their high porosity and heterogeneity that makes impossible to obtain the stable shielding characteristics for thin sample. However, CMs contained functionalized TEG are sufficiently homogeneous and allow purposefully regulate their electrical and shielding properties by changing TEG content.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2016.1255032