Qhov sib xws ntawm kev xab npum ua kua yog feem ntau txiav txim siab los ntawm nws cov khoom xyaw thiab nws ua tiav li cas. Ntawm no yog cov ntsiab lus tseem ceeb uas ua rau cov kua xab npum ua kua tsawg:
1. Lub luag haujlwm ntawm tuab dua
Thickeners yog thawj qhov sib xws-kho cov khoom xyaw ua cov tshuaj ntxuav ua kom huv. Feem ntau siv cov thickeners suav nrog:
Dej-soluble polymers: xws li hydroxyethyl cellulose (HEC), sodium polyacrylate, thiab lwm yam cov tshuaj tov nrog cov tshuaj colloidal nrog qee yam viscosity.
Inorganic thickeners: xws li silicates, calcium carbonate, etc. tuaj yeem nce viscosity los ntawm kev nce ntom ntom ntom thiab ntim ntawm cov sij hawm dispersed.
Cov ntsev (xws li sodium chloride, sodium sulfate): ntxiv rau hauv cov kev sib cuam tshuam ntawm surfactant molecules, yog li nce lub sijhawm liquency ntawm cov kua.
2. Hom thiab concentration ntawm surfactants
Surfactants yog cov khoom xyaw tseem ceeb ntawm cov tshuaj ntxuav ua kua, thiab lawv cov hom thiab cov siab yuav cuam tshuam loj heev:
Cov qauv ntawm surfactants: surfactants nrog lub sijhawm ntev dua molecular lossis hydrophilic sib npaug muaj ntau dua los tsim cov tshuab nplaum.
Micelle conctration: Thaum surfactant ncav cuag lub tshuab hluav taws xob tseem ceeb, micelles daim ntawv thiab cov micelles tuaj yeem ua kom cov viscosity ntawm cov kua los ntawm kev sib cuam tshuam.
3. Py tus nqi ntawm kev daws teeb meem
Cov tshuaj ntxuav ua kua feem ntau yuav tsum tau khaws cia nyob rau hauv cov hom feem ntau (xws li nruab nrab lossis me ntsis alkaline) kom paub tseeb thiab ua tau zoo. Muaj qee kis, hloov pauv hauv PH tuaj yeem hloov cov solubility ntawm qee cov khoom xyaw, yog li cuam tshuam rau kev sib xws ntawm cov kua. Piv txwv li:
Hauv cov kev kawm alkaline ib puag ncig, qee qhov sensionic surfactants yuav tsim cov qauv gel zoo li.
Kev hloov kho ntawm tus nqi pH tuaj yeem ua tau zoo tshaj ntawm cov thickener.
4. Lwm cov khoom xyaw hauv cov qauv
Cov kuab tshuaj: dej yog thawj cov kuab tshuaj, tab sis qee yam cosolles (piv txwv li, propylene glycol, ethanol) tuaj yeem cuam tshuam viscosity. Lawv tuaj yeem txo cov ntws dawb ntawm cov kab ke thiab ua kom cov kua thicker.
Ntxiv: xws li muaj roj fatty lossis cov roj ntsha, feem ntau siv los txhim kho lub zog sib xws thiab hnov qab ntawm xab npum.
Emulsifiers thiab stabilizers: pab tswj cov khoom noj txawm tias kev faib cov khoom xyaw hauv cov kua thiab tiv thaiv stratification, yog li nce qhov sib txawv.
5. Lub cev ua haujlwm
Thaum lub sijhawm ua haujlwm ntau lawm, kev tswj hwm ntawm lub cev mob tseem muaj qee yam cuam tshuam rau cov kua ua kua:
Shear Force thiab sib xyaw nrawm: sib xyaw sib xyaw muaj zog tuaj yeem txhawb kev faib cov khoom sib faib ntawm cov khoom siv viscellosity.
Kev tswj qhov kub thiab txias: cua sov lossis txias hloov cov yam ntxwv ntawm cov kua, yog li cuam tshuam kev sib xws.
6. Cov neeg tau txais kev pab thiab tsim qauv tsim
Cov kev lag luam sib txawv thiab cov neeg siv khoom tau sib txawv cov nyiam rau cov xab npum. Txhawm rau kom tau raws li cov kev xav tau no, cov tuam txhab tsim cov qauv thiab cov txheej txheem ua kom ua rau cov tshuaj ntxuav kom zoo rau kev siv thiab yooj yim rau pob thiab khw.
Qhov sib xws ntawm cov tshuaj ntxuav ua kua tau tiav los ntawm cov qauv tshawb fawb thiab ua tiav. Los xaiv cov tuab tuab, surfactants thiab lwm yam kev muaj cov khoom xyaw, thiab kev ua kom zoo ntawm cov khoom noj muaj zog, thiab kev ua kua rau cov khoom noj ua kua tuaj yeem tswj tau cov kev xav tau sib txawv.
Lub sijhawm Post: Feb-15-2025