Dab tsi yog Silicone Antifoam

Silicone antifoams feem ntau yog tsim los ntawm hydrophobized silica uas tau ua kom zoo nyob hauv cov kua dej silicone.Lub resulting compound yog ces stabilized rau hauv dej los yog roj-raws li emulsion.Cov antifoams no muaj txiaj ntsig zoo vim lawv cov tshuaj lom neeg tsis zoo, muaj zog txawm tias nyob hauv qhov tsis tshua muaj siab, thiab muaj peev xwm kis tau los ntawm cov yeeb yaj kiab ua npuas ncauj.Yog tias xav tau, lawv tuaj yeem ua ke nrog lwm cov khoom siv hydrophobic thiab kua los txhim kho lawv cov khoom defoaming.

Silicone antifoam agents feem ntau nyiam.Lawv ua haujlwm los ntawm kev rhuav tshem qhov nro thiab destabilizing npuas npuas, ua rau lawv tawg.Qhov kev txiav txim no pab kom tshem tawm sai ntawm cov npuas dej uas twb muaj lawm thiab tseem pab tiv thaiv kev ua npuas ncauj.

Qhov zoo ntawm silicone defoamer

• Ntau yam kev siv

Vim yog cov qauv tshuaj tshwj xeeb ntawm cov roj silicone, nws tsis sib haum nrog cov dej los yog cov khoom uas muaj cov polar pawg, tsis yog cov hydrocarbons lossis cov khoom siv organic uas muaj pawg hydrocarbon.Txij li cov roj silicone yog insoluble nyob rau hauv ntau yam tshuaj, silicone defoamer muaj ntau yam kev siv.Nws tuaj yeem siv tsis tau tsuas yog rau defoaming dej systems, tab sis kuj rau defoaming roj systems.

• Tsawg nto nro

Qhov nro ntawm cov roj silicone feem ntau yog 20-21 dynes / cm thiab me dua qhov nro ntawm cov dej (72 dynes / cm) thiab cov dej ua npuas dej dav dav, uas txhim kho cov nyhuv ua npuas dej.

• Zoo thermal stability

Kev siv cov roj dimethyl silicone feem ntau ua piv txwv, nws qhov kub thiab txias ua haujlwm ntev tuaj yeem ncav cuag 150 ° C, thiab nws qhov kub thiab txias tsis kam tuaj yeem ncav cuag tshaj 300 ° C, kom ntseeg tau tias cov tshuaj silicone defoaming tuaj yeem siv rau hauv qhov kub thiab txias.

• Zoo tshuaj stability

Silicone roj muaj cov tshuaj lom neeg ruaj khov thiab nyuaj rau cov tshuaj lom neeg nrog rau lwm yam tshuaj.Yog li ntawd, ntev npaum li qhov kev npaj tsim nyog, cov tshuaj silicone defoaming tau tso cai siv rau hauv cov tshuab uas muaj cov kua qaub, alkalis, thiab ntsev.

• Physiological inertia

Silicone roj tau raug pov thawj tias tsis muaj tshuaj lom rau tib neeg thiab tsiaj txhu.Yog li ntawd, silicone defoamers (nrog rau cov uas tsis yog-tshuaj lom emulsifiers, thiab lwm yam) yuav siv tau zoo nyob rau hauv cov ntaub so ntswg thiab ntawv, khoom noj khoom haus, kev kho mob, tshuaj thiab tshuaj pleev ib ce kev lag luam.

• Muaj zog defoaming

Silicone defoamers tuaj yeem tsis tsuas yog ua kom zoo ua npuas ncauj uas twb muaj lawm, tab sis kuj tseem cuam tshuam ua npuas ncauj thiab tiv thaiv kev tsim ua npuas ncauj.Qhov ntau npaum li cas me me, thiab tsuas yog ib lab (1 ppm lossis 1 g / m3) ntawm qhov hnyav ntawm qhov nruab nrab foaming tuaj yeem muab ntxiv los tsim cov nyhuv defoaming.Nws qhov ntau yog 1 txog 100 ppm.Tsis tsuas yog tus nqi qis, tab sis nws yuav tsis ua qias neeg cov ntaub ntawv raug defoamed.

Silicone antifoams muaj nuj nqis rau lawv txoj kev ruaj ntseg, kev sib raug zoo nrog ntau yam tshuaj, thiab kev ua tau zoo hauv cov concentrations tsawg.Txawm li cas los xij, nws yog ib qho tseem ceeb kom ntseeg tau tias lawv ua raws li cov qauv kev cai thiab tsim nyog rau daim ntawv thov tshwj xeeb kom tsis txhob muaj kev cuam tshuam rau cov khoom zoo lossis ib puag ncig.