Organosilicon Defoamers: Siab- Cov Ua Npuas Ncauj Ua Haujlwm Ua Haujlwm Hauv Kev Siv Khoom
Nyob rau hauv niaj hnub kev lag luam ntau lawm, ua npuas ncauj yog ubiquitous nyob rau hauv ua kua, ntxuav tank, formulations khoom, thiab petrochemical thiab dej kho txheej txheem. Cov teeb meem tshwm sim los ntawm kev ua npuas dej muaj xws li txo cov khoom noj kom zoo, pov tseg ntawm cov khoom siv raw, txuas ntxiv mus, thiab cuam tshuam rau cov khoom zoo thiab ruaj khov.
I. Dab tsi yog Organosilicon Defoamer?
Ib qho organosilicon defoamer yog cov khoom lag luam thib ob raws li cov roj silicone, npaj los ntawm kev ntxiv cov tshuaj tua kab mob. Nws lub luag haujlwm tseem ceeb yog tiv thaiv kev tsim ua npuas ncauj, txo cov npuas tsim, lossis tshem tawm cov npuas dej uas twb muaj lawm. Cov defoamers no muaj nyob hauv ntau hom, suav nrog roj-raws li, silicone roj muab tshuaj txhuam-raws li, tshuaj-raws li, emulsion-raws li, tus kheej-emulsifying, thiab hmoov-raws li. Lawv nthuav tawm kev ua haujlwm zoo heev hauv cov dej thiab tsis yog -aqueous foaming systems thiab tau dav siv hauv roj av, tshuaj, fiber ntau, papermaking, ua zaub mov, fermentation, kua, thiab dej khib nyiab kev lag luam.
II. Txoj Cai Ua Haujlwm ntawm Organosilicon Defoamers
Lub defoaming los yog ua npuas ncauj -suppressing peev xwm ntawm organosilicon defoamers stems los ntawm lawv cov yam ntxwv tsis tshua muaj defoamers. Silicone roj ua tiav nws cov nyhuv defoaming los ntawm kev cuam tshuam nrog qhov nro ntawm cov pa roj -kua interface. Hauv kev tshaj tawm ua npuas ncauj, cov khoom siv roj silicone txo qhov nro, tsim cov ntsiab lus tsis muaj zog uas ua rau ua npuas ncauj tawg. Tus yuam sij rau defoaming kev ua ub no nyob rau hauv lub ceev dispersion ntawm silicone roj hais. SiO2 muab tub lim ntxiv thaum lub sijhawm tsim khoom txhawb kev tawg sai ntawm cov roj silicone, tsim kom muaj cov npuas txuas ntxiv - tawg. Kev ruaj ntseg thiab kev ua haujlwm ntawm emulsion- hom defoamers yuav tsum tau sib npaug kom muaj kev ua haujlwm siab thaum tuav cov solubility tsawg hauv ob theem dej thiab roj.
Kev ua haujlwm ntawm defoamers tuaj yeem muab faib ua peb lub tshuab
Ua npuas ncauj tawg
Silicone roj nkag mus rau hauv cov npuas dej los ntawm huab cua sab, cuam tshuam cov qauv ua npuas ncauj.
Ua npuas ncauj
Silicone roj nkag los ntawm cov kua sab, tiv thaiv ua npuas ncauj.
Defoaming
Silicone roj nkag mus rau hauv npuas interface, ua rau npuas ntab mus rau saum npoo.
III. Yam ntxwv Analysis ntawm Organosilicon Defoamers
Qhov tsis yog -polar xwm ntawm organosilicon defoamers ua rau lawv insoluble nyob rau hauv ntau yam xov xwm, xws li dej, tsiaj thiab zaub roj, thiab siab - boiling - taw tes ntxhia roj, muab broad applicability thiab ntev - ua npuas ncauj suppression nyhuv.
It possesses low surface tension, requiring only a very small amount (10*10⁻⁶ to 200*10⁻⁶ of foaming liquid) to achieve highly efficient defoaming without affecting product performance.
Nws nthuav tawm cov tshuaj lom neeg ruaj khov thiab ua haujlwm kub, ua haujlwm zoo txawm tias kub txog 150 degree.
Lub physiological inertness ntawm methyl silicone roj ua rau nws haum rau cov zaub mov, tshuaj pleev ib ce, thiab kws industries. Nws muaj kev nyab xeeb rau tib neeg siv thiab muaj tsawg heev biochemical oxygen xav tau (BOD), ua rau nws tus phooj ywg environmentally.
Organic silicone defoamers tsis tsuas yog tawg ua npuas ncauj uas twb muaj lawm tab sis kuj inhibit ua npuas ncauj. Tsuas yog cov lej yuav tsum tau ua kom ua tau zoo defoaming hauv xov xwm foaming, nrog kev siv tsawg li 1 feem ntawm ib lab (ppm), ua rau muaj kev cuam tshuam loj. Nws daim ntawv thov ntau yog dav, los ntawm 1 mus rau 100 ppm, ua rau nws ob qho tib si kev lag luam thiab ib puag ncig tus phooj ywg, tsis muaj kev cuam tshuam cov purity ntawm cov khoom defoamed.
