Bulk Fluidity and Apparent Wall Slip of Aqueous Kaolin Suspensions Studied Using the Cone-cone (KK) Sensor: The Effect of Concentration and Temperature.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F16%3A00463824" target="_blank" >RIV/67985858:_____/16:00463824 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.colsurfa.2016.09.082" target="_blank" >http://dx.doi.org/10.1016/j.colsurfa.2016.09.082</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2016.09.082" target="_blank" >10.1016/j.colsurfa.2016.09.082</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bulk Fluidity and Apparent Wall Slip of Aqueous Kaolin Suspensions Studied Using the Cone-cone (KK) Sensor: The Effect of Concentration and Temperature.

Popis výsledku v původním jazyce

The material viscometric functions of aqueous kaolin suspensions were measured using rotational viscometry with an unconventional cone-cone (KK) sensor. The fluidity and slip functions were obtained for various concentrations and temperatures, applying different gap thicknesses of a smooth stainless sensor. Both the fluidity and slip functions decrease with increasing kaolin concentration. The fluidity of suspensions decreases also with rising temperature, which is highly unusual trend. On the contrary, the slip coefficient follows a temperature rise of the fluidity of continuous phase, which supports the hypothesis on existence of a totally depleted slip layer. The relative slip contribution to overall kinematic effect, A, was found to vary over a broad interval. The apparent wall slip dominates at low shear stresses, whereas the bulk fluidity prevails at high shear stresses.

Název v anglickém jazyce

Bulk Fluidity and Apparent Wall Slip of Aqueous Kaolin Suspensions Studied Using the Cone-cone (KK) Sensor: The Effect of Concentration and Temperature.

Popis výsledku anglicky

The material viscometric functions of aqueous kaolin suspensions were measured using rotational viscometry with an unconventional cone-cone (KK) sensor. The fluidity and slip functions were obtained for various concentrations and temperatures, applying different gap thicknesses of a smooth stainless sensor. Both the fluidity and slip functions decrease with increasing kaolin concentration. The fluidity of suspensions decreases also with rising temperature, which is highly unusual trend. On the contrary, the slip coefficient follows a temperature rise of the fluidity of continuous phase, which supports the hypothesis on existence of a totally depleted slip layer. The relative slip contribution to overall kinematic effect, A, was found to vary over a broad interval. The apparent wall slip dominates at low shear stresses, whereas the bulk fluidity prevails at high shear stresses.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

<a href="/cs/project/LD13018" target="_blank" >LD13018: Vlastnosti fázového rozhraní - jejich měření a jejich vliv na chování makroskopických toků</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Colloids and Surfaces. A - Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

—

Svazek periodika

511

Číslo periodika v rámci svazku

DEC 20

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

272-284

Kód UT WoS článku

000388547000030

EID výsledku v databázi Scopus

2-s2.0-84991691010