About: A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes

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About: A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.chemicke-listy.cz/docs/full/2014_s1_s78-s85.pdf
Description	This work deals with preparation of CNT based silicone composites with a view to control the value of percolation threshold. To this end, the effect of organic solvent N-methyl-2-pyrrolidone (NMP) on dispersion of CNT in silicone (resulting in electrically conductive composites) was studied. Nanocomposites preparation comprised several steps: (1) dispersing CNTs in aqueous solution of NMP; (2) mixing them into a low viscosity silicone matrix using sonication; (3) curing of homogeneously distributed CNTbased composition by curing agent. As a result, three types of composites differing in preparation method and with different CNT content (0-7 vol.%) were prepared. DC and AC conductivities as well as dielectric properties of nanocomposites were studied. The results obtained show that modification of CNT caused the increase of percolation threshold from 2 (for unmodified CNT) to 4 vol.%. Such a shift can be explained by the insulation/ separation of individual CNTs. The separation of CNTs decreases the probability of percolation cluster formation, but increases the area of CNT-polymer matrix interface leading to the decrease of charge transport. This work deals with preparation of CNT based silicone composites with a view to control the value of percolation threshold. To this end, the effect of organic solvent N-methyl-2-pyrrolidone (NMP) on dispersion of CNT in silicone (resulting in electrically conductive composites) was studied. Nanocomposites preparation comprised several steps: (1) dispersing CNTs in aqueous solution of NMP; (2) mixing them into a low viscosity silicone matrix using sonication; (3) curing of homogeneously distributed CNTbased composition by curing agent. As a result, three types of composites differing in preparation method and with different CNT content (0-7 vol.%) were prepared. DC and AC conductivities as well as dielectric properties of nanocomposites were studied. The results obtained show that modification of CNT caused the increase of percolation threshold from 2 (for unmodified CNT) to 4 vol.%. Such a shift can be explained by the insulation/ separation of individual CNTs. The separation of CNTs decreases the probability of percolation cluster formation, but increases the area of CNT-polymer matrix interface leading to the decrease of charge transport. (en)
Title	A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes (en)
skos:prefLabel	A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes A solvent dispersion method for the preparation of silicone composites filled with carbon nanotubes (en)
skos:notation	RIV/70883521:28610/14:43871602!RIV15-MSM-28610___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0111), P(EE.2.3.20.0104), S
http://linked.open...iv/cisloPeriodika	S1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Vilčáková, Jarmila Moučka, Robert Kazantseva, Natalia Babayan, Vladimir Artur Kutějová, Lenka
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Univerzitní institut
http://linked.open...dnocenehoVysledku	1192
http://linked.open...ai/riv/idVysledku	RIV/70883521:28610/14:43871602
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Silicone elastomer; Nanocomposites; N-methyl-2- pyrrolidone; Electrical properties; Carbon nanotubes; Carbon black (en)
http://linked.open.../riv/klicoveSlovo	Nanocomposites Electrical properties N-methyl-2- pyrrolidone Silicone elastomer Carbon nanotubes Carbon black
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[31B013B20129]
http://linked.open...i/riv/nazevZdroje	Chemické listy
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Polymer Systems Advanced theoretical and experimental studies of polymer systems
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	108
http://linked.open...iv/tvurceVysledku	Kazantseva, Natalia Moučka, Robert Vilčáková, Jarmila Babayan, Vladimir Artur Kutějová, Lenka Winkler, Martin
http://linked.open...ain/vavai/riv/wos	000338630400014
issn	0009-2770
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	28610

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