Magnetorheological Elastomers: Electric Properties versus Microstructure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F18%3A63518800" target="_blank" >RIV/70883521:28110/18:63518800 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/18:63518800

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.5060697" target="_blank" >http://dx.doi.org/10.1063/1.5060697</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5060697" target="_blank" >10.1063/1.5060697</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetorheological Elastomers: Electric Properties versus Microstructure

Popis výsledku v původním jazyce

A series of composite materials comprising elastomeric matrix filled with magnetic filler (magnetorheological elastomer) were prepared in two morphological variants, namely with random and organized spatial distribution of filler particles. Orderly arrangement in the latter case was achieved through application of magnetic field throughout curing. Influence of filler concentration and its arrangement in magnetorheological elastomers (isotropic and anisotropic) on electric properties was studied by the means of dc conductivity measurement and dielectric relaxation spectroscopy. Qualitatively different behavior was observed for anisotropic samples with relaxations linked to charge transport along filler clusters. Activation energy of these was extracted from temperature measurements and found to decrease with filler loading as inter-particle distance diminishes. Strongly non-linear character of this decrease was explained by decreasing degree of anisotropy in structured samples with increasing filler loading due to spatial and viscous effects preventing arrangement of filler as regular as in case of low concentrations. This correlation, i.e. between dielectric properties and inner structure of magnetorheological elastomers, is employed for description of such systems inner morphology.

Název v anglickém jazyce

Magnetorheological Elastomers: Electric Properties versus Microstructure

Popis výsledku anglicky

A series of composite materials comprising elastomeric matrix filled with magnetic filler (magnetorheological elastomer) were prepared in two morphological variants, namely with random and organized spatial distribution of filler particles. Orderly arrangement in the latter case was achieved through application of magnetic field throughout curing. Influence of filler concentration and its arrangement in magnetorheological elastomers (isotropic and anisotropic) on electric properties was studied by the means of dc conductivity measurement and dielectric relaxation spectroscopy. Qualitatively different behavior was observed for anisotropic samples with relaxations linked to charge transport along filler clusters. Activation energy of these was extracted from temperature measurements and found to decrease with filler loading as inter-particle distance diminishes. Strongly non-linear character of this decrease was explained by decreasing degree of anisotropy in structured samples with increasing filler loading due to spatial and viscous effects preventing arrangement of filler as regular as in case of low concentrations. This correlation, i.e. between dielectric properties and inner structure of magnetorheological elastomers, is employed for description of such systems inner morphology.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA17-24730S" target="_blank" >GA17-24730S: Nové magnetoreologické elastomery na bázi modifikovaných magnetických plniv</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-1740-3

ISSN

0094-243X

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

American Institute of Physics

Místo vydání

Meville

Místo konání akce

Sliema

Datum konání akce

22. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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