Kev txhim kho kev hloov pauv ntawm cov organic defoamers hauv kev lag luam ntawv. Daim ntawv thov kev tshawb fawb ntawm cov neeg sawv cev nquag hauv ntiaj teb tab tom hloov pauv los ntawm ib hom sib xyaw ua ke mus rau hom sib xyaw. Cov teb chaws thoob ntiaj teb tau faib nyiaj ntau ntawm kev tswj hwm tib neeg cov peev txheej thiab cov peev nyiaj rau cov peev txheej ua haujlwm ntawm cov organic defoamers. Nrog kev nqis peev thiab cov peev txheej, ntau qhov txiaj ntsig ntawm kev ua thawj coj tau ua tiav, thiab kev ua tau zoo ntawm cov organic defoamers tau zoo dua qub. Kev tshaj lij ntawm kev npaj cov organic thiab nws daim ntawv thov qhia pom kev nthuav dav zuj zus. Raws li yog ib feem tseem ceeb ntawm tsev neeg organic, cov organic defoamers muaj tib txoj kev txhim kho hauv kev lag luam ntawv.
Raws li peb txhua tus paub, hauv kev lag luam ntawv muaj txiaj ntsig zoo sawv cev los ntawm oleic acid amide, polyether, thiab cov khoom siv organic, cov organic defoamers tau hloov pauv tag nrho ib txwm tsis muaj txiaj ntsig zoo ntawm cov ntxhia roj, roj zaub, cawv, thiab lwm yam, thiab tau ua haujlwm zoo rau kev lag luam ntawv. Feem ntau hais lus, polyether silicone defoamers tau hloov pauv los ntawm ntau yam pib. Silicone defoamers tuaj yeem siv ua lub hauv paus rau kev faib tawm polyether silicone defoamers. Raws li lawv qhov sib txawv, polyether silicone defoamers tuaj yeem faib ua hom polyol thiab fatty acid ester hom, uas yog, hom amine ether. Cov hom defoamers no muaj lawv tus yam ntxwv.
Cov qauv tshuaj tshuaj tshuaj sib txawv ntawm lwm cov organic defoamers. Cov pab pawg tshwj xeeb tsis zoo ib yam li tsis muaj qhov muag pom, thiab tsis muaj kev koom tes nrog cov sib xyaw uas muaj dej, pab pawg hydrocarbon lossis pab pawg kho qhov muag. Piv nrog rau lwm cov organic silicon defoamers, nws tuaj yeem rhuav tshem. Kev mob siab rau, feem ntau tsuas yog xav tau ntxiv qhov hnyav ntawm 1×10-6 ~ 75×10-6 kev tswj hwm los ntawm cov kab ke kom tau txais qhov kev cia siab ntawm kev tshem tawm qhov ua tau zoo.
Lub cev muaj zog yog qhov yooj yim rau kev sib xyaw ua ke, thiab nws tsis yooj yim kom muaj cov tshuaj tiv thaiv exothermic nrog ua npuas dej sib xyaw. Organic defoamers muaj cua sov ua haujlwm zoo thiab tiv taus qhov ntsuas kub thiab qis. Cov viscosity ntawm methyl silicone roj maj mam nce ntawm kwv yees li 200°C, thiab daim ntawv cog lus silicon-oxygen tsis yaj. Cov roj methyl silicone muaj kev hloov pauv tau zoo thiab ntub dej. Yog li, silicone defoamer muaj txiaj ntsig zoo los txhim kho daim ntawv lo zoo.
Organic defoamers muaj kev nyab xeeb, tsim khoom ntsuab, thiab txuas ntxiv lub cev. Qhov kev tsim khoom zoo nkauj thiab txawj ntse no. Organic defoamers muaj kev tiv thaiv kev laus, txheej txheem kev ua haujlwm thiab tiv thaiv kev laus. Lawv tuaj yeem siv tau raws li txhua qhov txheej txheem ib puag ncig ib puag ncig. Organic defoamers muaj siab Tag nrho cov kev ua tau zoo, tab sis tus nqi ncaj qha yog siab dua. Nws tuaj yeem siv rau txhua qhov txheej txheem tsim khoom hauv daim ntawv kev lag luam, nrog rau kev ua kom tsis zoo siab thiab qee zaum tsis txaus siab ua npuas ua rau muaj kev cuam tshuam.
Yog li ntawd, cov organic defoamer tuaj yeem sib xyaw nrog lwm cov surfactants xws li oleic acid amide thiab polyether nrog kev rhuav tshem thiab ua npuas ncauj tshwj xeeb txhawm rau tsim cov organic defoamer sib xyaw, uas tuaj yeem tsis tsuas yog txhim kho kev ua npuas dej muaj peev xwm ua kom muaj peev xwm ntawm cov organic defoamer, tab sis kuj txo tus nqi ncaj qha ntawm cov khoom. Nrog rau kev txhim kho kev tshaj lij ntawm cov khoom sib xyaw ua ke, cov organic defoamers muaj kev lag luam dav dav muaj peev xwm thiab muaj peev xwm ua lag luam loj.
Sijhawm Tshaj Tawm: Aug-17-2021