Kev ua haujlwm ntawm cov tshuaj ntub dej

Tus neeg sawv cev ntub dej tuaj yeem txo qhov nro ntawm lub cev thiab txhim kho cov txiaj ntsig ntawm kev siv dej-raws li cov xim ntoo. Tom qab ntxiv tus neeg sawv cev ntub dej, kev ua haujlwm ntub dej thiab permeability ntawm cov xim ntawm cov substrate nce, thiab cov qib kev ua tau zoo ntawm cov kua xim yog txhim kho. Qee zaum, nws tuaj yeem kov yeej qhov teeb meem ntawm ntug shrinkage (daim iav ncej nyhuv). Qhov tseem ceeb tshaj, cov neeg ua hauj lwm theem tuaj yeem daws cov teeb meem ntawm qhov shrinkage, tshwj xeeb tshaj yog cov uas tshwm sim los ntawm kev siv ntau dhau ntawm defoamers. Tus neeg saib xyuas ntau dhau tuaj yeem cuam tshuam cov nyhuv defoaming ntawm tus neeg saib xyuas defoaming, ua rau npuas tshwm rau hauv cov xim thaum tsim kho, thiab qee qhov kuj tseem muaj txiaj ntsig zoo. Yog li ntawd, nws raug nquahu kom xaiv cov khoom ntub dej nrog cov khoom zoo, tsis muaj foaming zog, thiab tsis muaj npuas stability. Kev sib xyaw ua ke ntawm cov neeg ua haujlwm qib thiab cov defoamers, suav nrog kev xaiv ntau yam thiab kev tswj hwm ntau npaum li cas, yog qhov tseem ceeb ntawm kev tshawb fawb ntawm cov dej-raws li ntoo xim formulations.