I. Ntuj Roj (piv txwv li cov roj taum taum, pob kws cov roj, thiab lwm yam.)
Ii. Cov pa cawv ntau
III. Polyether Antifoamers
IV. Polyether Hloov Silicone
... Yav dhau los tshooj rau cov ntsiab lus.
V. Organic Silicon Antifoamer
Polydimethylsiloxane, tseem hu ua Silicone Roj, yog lub ntsiab tivthaiv ntawm Silicone defosmer. Piv nrog cov dej thiab cov roj uas nquag muaj, nws cov npoo av me me yog qhov tsim nyog, uas haum rau cov khoom ua npuas dej thiab cov roj ua npuas. Silicone roj muaj kev ua haujlwm siab, solubility qis, ruaj khov tshuaj, tsis muaj tshuaj ntsuab, tsis muaj tshuaj lom, thiab muaj peev xwm txaus ntshai. Qhov tsis zoo yog cov neeg tsis muaj nuj nqis ua yuam kev.
1. Khoom Siv Hluav Taws Xob
Cov antifoamer muaj cov yam ntxwv ntawm kev ruaj khov zoo, txheej txheem yooj yooj yim, kev thauj mus los yooj yim thiab siv yooj yim. Nws yog qhov haum rau ob qho roj theem thiab dej theem, thiab hom nyiaj nruab nrab tsis muaj txiaj ntsig. Nws yog dav siv nyob rau hauv lub tshav pob ntawm cov npaus tsawg lossis tsis ua npuas dej hmoov.
2. Emulsion Antifoamer
Cov roj silicone hauv emulsion defoamer muaj ntau dua nro, thiab emulsification coefficient loj heev. Thaum lub emulsifier raug xaiv tsis tau siv, nws yuav ua rau neeg tus neeg sawv cev defojing kom fawm kib thiab metamorphic hauv lub sijhawm luv luv. Qhov ruaj khov ntawm emulsion yog qhov tseem ceeb heev rau qhov zoo ntawm defojing tus neeg sawv cev. Yog li ntawd, kev npaj ntawm emulsion hom Silicone defoamer tsom rau kev xaiv ntawm emulsifier. Nyob rau tib lub sijhawm, cov emulsion defoamer muaj cov tshuaj ntau tshaj plaws hauv Silicone defoamer nrog cov yam ntxwv ntawm cov txiaj ntsig tsawg, dav defoaming nyhuv, thiab lwm yam. Nrog rau kev nce qib ntawm cov qauv kev ua tshuab, emulsion defoamer yuav tsim muaj ntau.
3. Cov tshuaj tiv thaiv kab mob
Nws yog kev daws teeb meem ua los ntawm discrolving silicone roj hauv cov kuab tshuaj. Nws txoj ntsiab cai defoaming yog tias Silicone roj cov khoom siv yog nqa los ntawm cov kuab tshuaj thiab tawg hauv cov kev ua npuas ncauj. Hauv txoj kev no, Silicone roj yuav maj mam ua rau cov tee dej kom tiav rau kev rhuav tshem. Silicone roj yaj nyob rau hauv tsis-aqueous organic daws teeb meem, xws li polycharoroethane, thiab lwm yam, tuaj yeem siv los ua cov roj tov defoaming.
4. Roj Antifoamer
Lub ntsiab tivthaiv ntawm cov roj defoamer yog dimethyl silicone roj. Ntshiab ntshiab Dosethyl silicone roj tsis muaj kev cuam tshuam dab tsi thiab xav tau emulsified. Qhov nro ntawm emulsified Silicone txo qis sai, thiab ib qho me me tuaj yeem ua npuas npuas muaj zog tawg thiab cuam tshuam. Thaum roj silicone muaj qee feem ntawm hydrophobically kho silica pab, ib tug roj compound defoamer tuaj yeem tsim tau. Silicon Dioxide yog siv los ua tus muab tub lim, vim tias muaj cov roj ntsha ntawm cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob ntawm cov khoom siv defoaming, thiab pom tseeb txhim kho cov cuab yeej defoaming ntawm silicone defoamer.
Vim tias Silicone roj yog lipophilic, Silicone defoamer muaj qhov ua tau zoo defoaming rau roj-soluble daws. Txawm li cas los xij, cov ntsiab lus yuav tsum tau them sai sai thaum siv Silicone defoamer:
● Tsawg viscosity silicone defoamer muaj cov nyhuv defoaming zoo, tab sis nws txoj kev pheej ua tsis tau zoo; Siab viscosity silicone defoamer tau qeeb defoaming cov nyhuv tab sis kev ua tau zoo.
● Yog tias viscosity ntawm kev ua npuas dej yog qis dua, nws zoo dua los xaiv cov silicone defoamer nrog viscoson ntau dua. Ntawm qhov tsis sib xws, ntau dua qhov viscosity ntawm kev ua npuas dej yog, nws zoo dua los xaiv cov silicone defoamer nrog qis viscosity.
FeCov hnyav ntawm oily Silicone defoamer muaj qee yam cuam tshuam rau nws cov nyhuv defoaming.
● Tus defosamer nrog tsawg molecular hnyav yog yooj yim rau disperse thiab yaj, tab sis tsis muaj kev pheej. Ntawm qhov tsis sib xws, qhov kev ua tsis txaus siab ntawm cov molecular hnyav defoamer yog tsis zoo, thiab emomilation yog qhov nyuaj, tab sis cov solubility yog neeg pluag thiab lub durability yog qhov zoo.
Lub Sijhawm Post: Nov-19-2021