Hydroxyethyl celluloseYog dav siv hauv cov xim pleev xim rau hauv looj, emulsion xim & yuav ua li cas siv hydroxyethyl cellulose hauv looj cov xim khov?
1. Ntxiv ncaj qha rau cov xim abrasive
Hom no yog qhov yooj yim tshaj plaws thiab siv sijhawm luv luv. Cov kauj ruam kom ntxaws yog raws li hauv qab no:
(1) Ntxiv cov dej ua kom haum rau cov vat ntawm cov kev txiav siab loj (feem ntau, ethylene glycol, urthenting tus neeg sawv cev thiab zaj duab xis-ua tus neeg sawv cev yog ntxiv rau lub sijhawm no)
(2) Pib stirring ntawm qhov nrawm nrawm thiab maj mam ntxiv hydroxyethyl cellulose
(3) Txuas ntxiv mus kom txog thaum txhua qhov me me ntub
(4) Ntxiv cov neeg inhibitor, pH excectionter, thiab lwm yam.
(5)Do kom txog thaum tag nrho cov hydroxyethyl celluloseYog kiag li yaj (lub viscosity ntawm kev daws teeb meem yog qhov nce ntxiv) ua ntej ntxiv lwm yam hauv cov qauv thiab sib tsoo kom txog thaum lub lacquer yog tsim.
2. Nruab nrog niam cawv
Cov qauv no yog thawj zaug nruab nrog kev kub siab dua ntawm niam niam haus cawv thiab tom qab ntawd ntxiv rau cov xim huv. Qhov zoo dua ntawm hom qauv no yog tias nws tuaj yeem txuas ntxiv ntxiv rau cov xim ua tiav, tab sis nws yuav tsum tau khaws cia kom zoo. Cov kauj ruam thiab cov hau kev zoo sib xws rau cov kauj ruam (1) - (4) Cov. tau. Txuas ntxiv nplawm kom txog thaum ua kom tiav kev daws teeb meem viscous. Nws yuav tsum raug sau tseg tias Mould inhibitor yuav tsum tau ntxiv rau niam cawv niam hmo kom sai li sai tau.
3. Nrog porridge
Txij li cov kuab huab Organic yog cov kuab tshuaj tsis zoo rau hydroxyethyl cellulose, cov organic cov kuab tshuaj tuaj yeem siv los muab cov porridge. Cov tshuaj lom neeg feem ntau siv cov kuab tshuaj muaj zog xws li ethylene glycolent, cov duab dej khov kuj tseem siv tau ua ke nrog cov dej khov nab kuab nws tau nruab nrog porridge. Cov porridge-zoo li hydroxyethyl cellulose tuaj yeem txuas ncaj qha ntxiv rau cov xim. Hydroxyethyl cellulose tau so txaus hauv porridge. Thaum ntxiv rau cov xim, nws yaj tau tam sim ntawd thiab tuab. Tom qab ntxiv ntxiv, nws yog qhov tsim nyog los txuas ntxiv do kom txog thaum hydroxyethyl cellulose yog rhuav thiab homogeneous. Feem ntau, cov porridge yog sib xyaw nrog ib feem ntawm cov organic folvent lossis dej khov thiab ib feem ntawm hydroxyethyl cellulose. Tom qab txog 5 txog 30 feeb, lub hydroxyethyl cellulose yog hydrolyzed thiab zoo kawg nkaus nce siab. Feem ntau, cov cua noo ntawm cov dej nyob rau lub caij ntuj sov dhau thiab yuav tsum tsis txhob siv rau porridge.
4. Kev ceev faj thaum siv hydroxyethyl cellulose niam cawv
Txij li hydroxyethyl cellulose (HEC)yog ib qho kev kho tau zoo, nws yog qhov yooj yim los tuav thiab yaj hauv dej kom ntev li cov teeb meem hauv qab no.
(1) ua ntej thiab tom qab ntxiv ntawm hydroxyethylcelleculose, nplawm yuav tsum txuas ntxiv kom txog thaum txoj kev daws teeb meem meej thiab meej.
(2) Nws yuav tsum yog maj mam siled rau hauv lub tank sib xyaw. Tsis txhob ntxiv cov khoom siv hydroxyethyl uas tau tsim rau hauv kev thaiv thiab cov duab kheej kheej ncaj qha rau hauv lub tank sib xyaw.
(3) Cov dej kub thiab tus lej hauv dej muaj kev sib raug zoo tseem ceeb nrog kev sib txawv ntawm cov cellulose ntawm hydrothethyl cellulose, thiab kev saib xyuas tshwj xeeb yuav tsum tau ua.
(4) Tsis tas muaj qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydrothethyl cellulose hmoov yog wetted los ntawm dej. Nce cov pH tom qab soaking pab yaj.
(5) Ntxiv pwm cov neeg nyob hauv sai li sai tau.
(6) Thaum siv cov viscosity hydroxyethyl cellulose, leej niam hausfor concentration yuav tsum tsis txhob siab dua 2.5-3% (los ntawm qhov hnyav), tsis li tus niam cawv yog qhov nyuaj rau lis.
Lub sijhawm Post: Jan-03-2019