Cov dej puas yog Newtonian?
Cov dej puas yog Newtonian?

Video: Cov dej puas yog Newtonian?

Video: Cov dej puas yog Newtonian?
Video: yog hmoov dab tsi. Zoo Xyooj (cover) 2024, Kaum ib hlis
Anonim

Qee qhov piv txwv ntawm Newtonian cov kua dej suav nrog dej , organic solvents, thiab zib mu. Rau cov kua viscosity tsuas yog nyob ntawm qhov kub thiab txias. Cov no yog nruj me ntsis tsis- Newtonian , tab sis thaum ntws pib lawv coj yam tseem ceeb li Newtonian kua (piv txwv li shear stress is linear with shear rate).

Yog li ntawd, dej puas yog Newtonian kua?

Ib qho classic Newtonian kua yog dej . Dej muaj viscosity zoo heev thiab yuav ib txwm ntws kwv yees tsis hais lub zog ua rau nws. Newtonian kua dej kuj tseem muaj cov viscosity hloov pauv tau hauv cov lus teb rau qhov kub thiab txias hloov pauv.

Ib yam li ntawd, cov ntshav puas yog Newtonian kua? Ntshav , ntawm qhov tod tes nrog rab riam hauv nws, yog ib qho tsis yog Newtonian kua dej . Nws cov viscosity hloov pauv nyob ntawm seb muaj kev ntxhov siab npaum li cas rau nws. Nws yog lub npe hu ua "shear-thinning" ua kua - qhov ntau ntshav yog agitated qhov tsawg viscous nws ua. Tab sis ntshav tsuas yog ib hom kua dej uas ntws tsis zoo li qhov koj xav tau.

Ib sab saum toj no, cov kua dej dab tsi hu ua Newtonian?

Piv txwv. Dej, cua, cawv, glycerol, thiab nyias lub cev muaj zog roj yog tag nrho cov piv txwv ntawm Newtonian kua dej tshaj qhov ntau ntawm shear stresses thiab shear rates ntsib nyob rau hauv lub neej txhua hnub.

Puas yog zib mu yog Newtonian kua?

Honey yog ib qho piv txwv ntawm qhov tsis yog Newtonian kua dej -a kua dej uas hloov nws tus cwj pwm thaum muaj kev ntxhov siab lossis ntxhov siab. Ixaj Newton thawj delineated cov khoom ntawm qhov nws suav tias yog zoo tagnrho ua kua ,” ntawm qhov twg dej yog qhov piv txwv zoo tshaj.

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