Emulsions yog cov tshuab thermodynamically tsis ruaj khov thiab nrawm nrawm rau hauv nyias txheej ntawm cov roj thiab dej [21]. Qhov no yog vim sib txawv ntawm cov roj thiab aqueous theem thiab kev sib cuag tsis zoo ntawm cov roj thiab dej molecules [16, 28].
emulsions thermodynamically tsis ruaj khov li cas?
Los ntawm qhov pom tseeb ntawm qhov ntsuas kub, ib qho emulsion yog ib qho tsis ruaj khov vim tias muaj lub ntuj nyiam rau cov kua dej / kua dej cais thiab txo nws qhov chaw cuam tshuam thiab, yog li ntawd, nws interfacial zog. … Ua oilfield emulsions raug cais raws li lawv cov degree ntawm kinetic stability.
Vim li cas emulsions tsis ruaj khov?
Emulsion, los ntawm qhov ntsuas kub ntawm qhov ntsuas, suav tias tsis ruaj khov vim tias muaj lub siab nyiam rau cov kua lossis cov kua dej sib cais thiab txo nws qhov chaw cuam tshuam thiab, yog li ntawd, nws lub zog interfacial.
Qhov emulsion twg yog qhov ntsuas kub tsis ruaj khov tshaj plaws?
Macroemulsion. Macroemulsions yog dispersed kua-kua, thermodynamically unstable systems nrog particle loj li ntawm 1 mus rau 100 μm (kev txiav txim ntawm magnitude), uas, feem ntau, tsis tsim spontaneously.
Dab tsi yog qhov tsis ruaj khov emulsion?
Kev tsis ruaj khov. Emulsion stability yog hais txog lub peev xwm ntawm emulsion los tiv thaiv kev hloov pauv hauv nws cov khoom dhau sijhawm. Muaj plaub hom kev tsis ruaj khovHauv emulsions: flocculation, creaming / sedimentation, coalescence, thiab Ostwald ripening.
