I. Cov roj ntuj (piv txwv li Cov roj taum pauv, Cov roj pob kws, thiab lwm yam)
II. Cawv Muaj Pa roj Carbon Ntau
III. Cov Tshuaj Polyether Antifoamers
IV. Polyether Hloov Kho Silicone
...Tshooj dhau los Hom Tshuaj Tiv Thaiv Ua Npuas Ncauj (1) kom paub meej ntxiv.
V. Cov Tshuaj Tiv Thaiv Organic Silicon
Polydimethylsiloxane, tseem hu ua roj silicone, yog cov khoom tseem ceeb ntawm silicone defoamer. Piv nrog dej thiab roj ib txwm, nws qhov kev nruj ntawm qhov chaw me dua, uas haum rau ob qho tib si dej-raws li foaming system thiab roj-raws li foaming system. Silicone roj muaj kev ua haujlwm siab, solubility tsawg, cov khoom tshuaj ruaj khov, ntau yam kev siv lub teeb, tsis tshua muaj volatility, tsis muaj tshuaj lom, thiab muaj peev xwm defoaming zoo. Qhov tsis zoo yog kev ua haujlwm tsis zoo ntawm foaming.

1. Khoom Ua Npuas Ncauj Khoom
Cov tshuaj tiv thaiv ua npuas ncauj muaj cov yam ntxwv ntawm kev ruaj khov zoo, cov txheej txheem yooj yim, kev thauj mus los yooj yim thiab siv tau yooj yim. Nws haum rau ob qho tib si roj thiab dej, thiab hom nruab nrab dispersion kuj tseem ceeb. Nws yog dav siv hauv kev lag luam ntawm cov hmoov ntxuav uas tsis muaj npuas lossis tsis muaj npuas.

2. Cov tshuaj emulsion tiv thaiv ua npuas ncauj
Cov roj silicone hauv cov tshuaj emulsion defoamer muaj qhov nruj dua, thiab cov coefficient emulsification loj dhau. Thaum xaiv cov emulsifier tsis raug, nws yuav ua rau cov neeg sawv cev defoaming raug txheej thiab metamorphic hauv lub sijhawm luv luv. Kev ruaj khov ntawm emulsion yog qhov tseem ceeb heev rau qhov zoo ntawm cov neeg sawv cev defoaming. Yog li ntawd, kev npaj cov tshuaj emulsion hom silicone defoamer tsom mus rau kev xaiv cov emulsifier. Tib lub sijhawm, cov tshuaj emulsion defoamer muaj cov koob tshuaj loj tshaj plaws hauv silicone defoamer nrog cov yam ntxwv ntawm tus nqi qis, qhov dav dav ntawm kev siv, cov nyhuv defoaming pom tseeb, thiab lwm yam. Nrog rau kev nce qib ntawm cov thev naus laus zis formulation, cov tshuaj emulsion defoamer yuav txhim kho zoo heev.

3. Tshuaj tua npuas dej
Nws yog ib qho kev daws teeb meem ua los ntawm kev yaj cov roj silicone hauv cov kuab tshuaj. Nws lub hauv paus ntsiab lus ntawm kev ua npuas dej yog tias cov khoom xyaw ntawm cov roj silicone raug nqa los ntawm cov kuab tshuaj thiab tawg mus rau hauv cov kua ua npuas dej. Hauv cov txheej txheem no, cov roj silicone yuav maj mam sib sau ua cov tee dej kom ua tiav kev ua npuas dej. Cov roj silicone yaj hauv cov txheej txheem kua organic uas tsis yog dej, xws li polychloroethane, toluene, thiab lwm yam, tuaj yeem siv ua cov kua roj defoaming.

4. Cov roj tiv thaiv ua npuas ncauj
Cov khoom tseem ceeb ntawm cov roj defoamer yog dimethyl silicone roj. Cov roj dimethyl silicone ntshiab tsis muaj cov nyhuv defoaming thiab yuav tsum tau emulsified. Qhov kev nruj ntawm qhov chaw ntawm emulsified silicone txo qis sai, thiab me me tuaj yeem ua rau muaj zog ua npuas ncauj tawg thiab inhibition. Thaum cov roj silicone sib xyaw nrog qee qhov feem pua ​​ntawm cov neeg pabcuam hydrophobically kho silica, cov roj sib xyaw defoamer tuaj yeem tsim. Silicon dioxide yog siv ua cov khoom sau, vim tias ntau ntawm cov hydroxyl pawg ntawm nws qhov chaw tuaj yeem txhim kho lub zog dispersing ntawm cov roj silicone hauv lub cev ua npuas ncauj, ua rau kom muaj kev ruaj khov ntawm cov emulsion, thiab pom tseeb txhim kho cov khoom defoaming ntawm silicone defoamer.

Vim tias cov roj silicone yog lipophilic, silicone defoamer muaj cov nyhuv defoaming zoo heev rau cov roj-soluble kua. Txawm li cas los xij, cov ntsiab lus no yuav tsum tau them sai sai thaum siv silicone defoamer:

● Cov tshuaj silicone defoamer uas tsis muaj viscosity ntau muaj cov nyhuv defoaming zoo, tab sis nws qhov kev ua haujlwm tsis zoo; Cov tshuaj silicone defoamer uas muaj viscosity ntau muaj cov nyhuv defoaming qeeb tab sis kev ua haujlwm zoo.
● Yog tias qhov viscosity ntawm cov kua ua npuas dej qis dua, nws zoo dua los xaiv cov silicone defoamer uas muaj viscosity siab dua. Ntawm qhov tsis sib xws, qhov viscosity siab dua ntawm cov kua ua npuas dej, nws zoo dua los xaiv cov silicone defoamer uas muaj viscosity qis dua.
● Qhov hnyav molecular ntawm oily silicone defoamer muaj qee yam cuam tshuam rau nws cov nyhuv defoaming.
● Cov tshuaj defoamer uas muaj qhov hnyav molecular qis yooj yim rau disperse thiab yaj, tab sis tsis muaj kev ruaj khov. Ntawm qhov tsis sib xws, qhov kev ua tau zoo ntawm cov tshuaj defoamer uas muaj qhov hnyav molecular siab tsis zoo, thiab qhov emulsification nyuaj, tab sis qhov solubility tsis zoo thiab qhov ruaj khov zoo.