Dab tsi yog stability ntawm kev ncua?
Dab tsi yog stability ntawm kev ncua?

Video: Dab tsi yog stability ntawm kev ncua?

Video: Dab tsi yog stability ntawm kev ncua?
Video: Qhov tseem ceeb ntawm kev thov Vajtswv yog dab tsi 1 2024, Kaum ib hlis
Anonim

STABILITY NTAWM SUSPENSION . Nws yog ib qho tseem ceeb kom nkag siab qhov ntawd kev ncua yog kinetically ruaj khov , tab sis thermodynamically tsis ruaj khov, system. Lub cev ruaj khov yog txhais raws li tus mob nyob rau hauv uas cov hais nyob rau hauv uniformly faib thoob plaws hauv lub dispersion tsis muaj tej yam tshwm sim ntawm sedimentation.

Ntawm no, vim li cas qhov kev ncua yog ruaj khov dua li kev daws teeb meem?

Vim yog lawv tus cwj pwm ua kua, kev ncua sawv cev rau daim foos zoo tagnrho rau cov neeg mob uas muaj teeb meem nqos cov ntsiav tshuaj lossis tshuaj ntsiav. Thaum kawg, tshuaj nyob rau hauv kev ncua yog tshuaj ruaj khov dua hauv daws.

Ib sab saum toj no, kuv yuav ua li cas thiaj li txwv tsis pub kuv qhov kev ncua tsis pub dhau? Caking tej zaum tiv thaiv los ntawm kev tsim kev ncua nrog cov txheej txheem sib koom ua ke uas txhawb nqa cov khoom thiab ua kom lawv tsis txhob nkag mus rau ib qho chaw kaw. Lub network tej zaum yuav muaj tus neeg sawv cev ncua (cov qauv tsheb), cov khoom lawv tus kheej (flocculated), los yog kev sib xyaw ntawm ob.

Qhov thib ob, vim li cas cov kev ncua tsis ruaj khov?

Tag nrho kev ncua , suav nrog ntxhib emulsions, yog qhov tseeb ntawm thermodynamically tsis ruaj khov . Lawv yuav, los ntawm random motion ntawm cov hais thaum lub sij hawm, aggreg vim ntawm lub ntuj thiab tseem ceeb nyiam kom txo tau qhov loj tshwj xeeb deg cheeb tsam thiab tshaj nto zog.

Pharmaceutical suspension yog dab tsi?

A tshuaj raug ncua yog ib coarse dispersion ntawm insoluble khoom hais nyob rau hauv ib tug kua nruab nrab. Txawm li cas los xij, nws yog qhov nyuaj thiab tseem ua tsis tau zoo los ua kom muaj kev ciam teb ntawm kev sib tw kev ncua thiab cov dispersions muaj cov khoom zoo dua. Kev ncua yog ib hoob tseem ceeb ntawm tshuaj noj cov ntawv.

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