Kev ua npuas dej yog lub peev xwm ntawm ib txheej txheej los tshem tawm cov npuas dej uas tsim tawm thaum lub sijhawm tsim khoom thiab txheej txheem txheej.Cov tshuaj ua npuas ncaujyog ib hom tshuaj ntxiv uas siv los txo cov ua npuas ncauj uas tsim thaum lub sijhawm tsim khoom thiab/lossis siv cov txheej pleev xim. Yog li ntawd, yam twg cuam tshuam rau qhov ua npuas ncauj ntawm cov txheej pleev xim?

1. Kev nruj ntawm qhov chaw
Qhov kev nruj ntawm qhov txheej txheej muaj feem cuam tshuam loj heev rau cov tshuaj defoamer. Qhov kev nruj ntawm qhov txheej txheej yuav tsum qis dua qhov ntawm cov txheej txheej, txwv tsis pub nws yuav tsis tuaj yeem defoam thiab tiv thaiv ua npuas ncauj. Qhov kev nruj ntawm qhov txheej txheej yog ib qho tseem ceeb uas hloov pauv tau, yog li thaum xaiv cov tshuaj defoamer, ob qho tib si qhov kev nruj ntawm qhov chaw tas li thiab qhov kev hloov pauv ntawm qhov kev nruj ntawm qhov system yuav tsum tau xav txog.

2. Lwm yam khoom ntxiv
Feem ntau cov surfactants siv rau hauv cov txheej txheej tsis sib haum nrog cov defoamers. Tshwj xeeb, emulsifiers, wetting thiab dispersing agents, leveling agents, thickeners, thiab lwm yam yuav cuam tshuam rau cov nyhuv ntawm defoamers. Yog li ntawd, thaum muab ntau yam additives sib xyaw ua ke, peb yuav tsum tau them sai sai rau kev sib raug zoo ntawm ntau yam additives thiab xaiv qhov sib npaug zoo.

3. Cov yam ntxwv kho
Thaum cov xim nkag mus rau hauv qhov cub kub siab ntawm chav tsev kub, qhov viscosity yuav poob tam sim ntawd thiab cov npuas tuaj yeem txav mus rau qhov chaw. Txawm li cas los xij, vim yog qhov volatilization ntawm cov kuab tshuaj, qhov kho ntawm cov xim, thiab qhov nce ntawm qhov viscosity ntawm qhov chaw, cov ua npuas ncauj hauv cov xim yuav ruaj khov dua, yog li ntawd raug ntes rau ntawm qhov chaw, ua rau muaj qhov shrinkage thiab pinholes. Yog li ntawd, qhov kub ci, qhov ceev kho, qhov ceev volatilization ntawm cov kuab tshuaj, thiab lwm yam kuj cuam tshuam rau qhov defoaming effect.

4. Cov ntsiab lus khov kho, viscosity, thiab elasticity ntawm cov txheej txheem
Cov txheej txheej tuab uas ruaj khov, cov txheej txheej uas muaj viscosity siab, thiab cov txheej txheej uas muaj elasticity siab yeej nyuaj rau defoam. Muaj ntau yam uas tsis zoo rau defoaming, xws li qhov nyuaj ntawm cov defoamers kom diffuse hauv cov txheej txheej no, qhov qeeb ntawm cov microbubbles hloov mus ua macrobubbles, qhov tsis muaj peev xwm ntawm cov foams kom mus rau saum npoo, thiab qhov viscoelasticity siab ntawm cov foams. Cov foams hauv cov txheej txheej no nyuaj heev rau tshem tawm, thiab nws yog qhov tsim nyog los xaiv cov defoamers thiab deaerators rau kev siv ua ke.

5. Txoj kev txheej thiab qhov kub ntawm kev tsim kho
Muaj ntau txoj kev siv txheej, suav nrog txhuam, txheej txheej rau cov menyuam, nchuav, khawb, txau, luam ntawv, thiab lwm yam. Qhov degree foaming ntawm cov txheej siv ntau txoj kev txheej kuj txawv. Txhuam thiab txheej txheej rau cov menyuam tsim ntau cov ua npuas ncauj dua li txau thiab khawb. Tsis tas li ntawd, qhov chaw tsim kho uas muaj qhov kub siab tsim ntau cov ua npuas ncauj dua li qhov kub qis, tab sis cov ua npuas ncauj kuj yooj yim dua rau kev tshem tawm ntawm qhov kub siab.