The effect of fluorosilicone modifiers on the carbon nanotube networks in epoxy matrix

ABSTRACT Structure and properties of polymer compositions based on carbon nanotubes (CNTs) filled epoxy matrix containing fluorosilicone copolymers as additives is discussed. Electrical conductivity and dielectric (microwave) permittivity of the composites can be varied by approximately one order of...

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Bibliographic Details
Published in:Journal of applied polymer science 2018-10, Vol.135 (37), p.n/a
Main Authors: Shashkeev, Konstantin A., Kondrashov, Stanislav V., Popkov, Oleg V., Solovianchik, Lyudmila V., Lobanov, Maxim V., Nagornaya, Valeria S., Soldatov, Mikhail A., Shevchenko, Vitaly G., Gulyaev, Artem I., Makarova, Viktoria V., Yurkov, Gleb Yu
Format: Article
Language:English
Subjects:
Additives
Carbon nanotubes
Carbon-epoxy composites
Composition
Copolymers
Crosslinking
Electrical properties
Electrical resistivity
graphene and fullerenes
Materials science
Nanocomposites
Nanotubes
Polymers
Rheological properties
thermosets
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Summary:ABSTRACT Structure and properties of polymer compositions based on carbon nanotubes (CNTs) filled epoxy matrix containing fluorosilicone copolymers as additives is discussed. Electrical conductivity and dielectric (microwave) permittivity of the composites can be varied by approximately one order of magnitude without changing the CNT concentration, by careful selection of the additive type and concentration. The mutual solubility of the modifiers and epoxy is a key factor determining both rheological properties of the uncured compositions and electrical properties of cured CNT‐nanocomposites. CNT‐nanocomposites modified with amino‐functional (i.e., epoxy crosslinkable) copolymers demonstrate improved electrical conductivity values at increased additive concentration, connected with the formation of specific segregated microstructure. Fluorosilicone additives added in a specific amount also allow for a decrease of the viscosity of uncured epoxy CNT‐nanocomposites, improving their processability. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46539.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.46539