Tensiometric Study of Magnetorheological Suspensions' Stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F14%3A43871773" target="_blank" >RIV/70883521:28610/14:43871773 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Tensiometric Study of Magnetorheological Suspensions' Stability

Popis výsledku v původním jazyce

This study focuses not only on the improvement of particles' stability in the magnetorheological (MR) suspension but also on the use of suitable technique called tensiometry evaluating the mutual compatibility between main components of the MR suspensions as well as their sedimentation. The magnetic particles investigated in this study were pure carbonyl iron (CI) and its poly-siloxane grafted analogue (grafting density 50 groups/nm2). Differences between the surface free energy of particles under investigation were evaluated based on the Owens, Wendt, Rabel and Kaelble (OWRK) method. Although the surface free energy was not significantly changed after the grafting of CI particles (23.6 mN/m) with polysiloxane (26.1 mN/m), the sedimentation stability measured also via tensiometer was improved after the grafting since grafted particles have higher disperse part compared to non-grafted particles resulting in better wetting with non-polar silicone oil used as a carrier liquid.

Název v anglickém jazyce

Tensiometric Study of Magnetorheological Suspensions' Stability

Popis výsledku anglicky

This study focuses not only on the improvement of particles' stability in the magnetorheological (MR) suspension but also on the use of suitable technique called tensiometry evaluating the mutual compatibility between main components of the MR suspensions as well as their sedimentation. The magnetic particles investigated in this study were pure carbonyl iron (CI) and its poly-siloxane grafted analogue (grafting density 50 groups/nm2). Differences between the surface free energy of particles under investigation were evaluated based on the Owens, Wendt, Rabel and Kaelble (OWRK) method. Although the surface free energy was not significantly changed after the grafting of CI particles (23.6 mN/m) with polysiloxane (26.1 mN/m), the sedimentation stability measured also via tensiometer was improved after the grafting since grafted particles have higher disperse part compared to non-grafted particles resulting in better wetting with non-polar silicone oil used as a carrier liquid.

Druh

O - Ostatní výsledky

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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