Hydroxyethyl celluloseyog dav siv nyob rau hauv latex xim, emulsion xim & coatings, yuav ua li cas siv Hydroxyethyl cellulose nyob rau hauv latex xim?
1. Ntxiv ncaj qha rau cov xim abrasive
Txoj kev no yog qhov yooj yim tshaj plaws thiab siv sijhawm luv luv. Cov kauj ruam ntxaws yog raws li nram no:
(1) Ntxiv cov dej huv uas tsim nyog rau lub vat ntawm lub siab txiav agitator (feem ntau, ethylene glycol, wetting agent thiab film-forming agent yog ntxiv rau lub sijhawm no)
(2) Pib stirring ntawm tsawg ceev thiab maj mam ntxiv hydroxyethyl cellulose
(3) txuas ntxiv do kom txog thaum tag nrho cov khoom ntub dej
(4) Ntxiv mildew inhibitor, pH adjuster, thiab lwm yam.
(5)Do kom txog thaum tag nrho cov hydroxyethyl celluloseyog yaj tag (lub viscosity ntawm cov tshuaj yog ho nce) ua ntej ntxiv lwm yam nyob rau hauv lub formulation thiab sib tsoo kom txog rau thaum lub lacquer yog tsim.
2. nruab nrog niam cawv
Txoj kev no yog thawj zaug nruab nrog ntau dua ntawm niam cawv thiab tom qab ntawd ntxiv rau cov xim latex. Qhov kom zoo dua ntawm txoj kev no yog tias nws muaj qhov yooj yim dua thiab tuaj yeem ncaj qha ntxiv rau cov xim tiav, tab sis nws yuav tsum tau khaws cia kom zoo. Cov kauj ruam thiab txoj hauv kev zoo ib yam li cov kauj ruam (1)-(4) hauv Txoj Kev 1, tshwj tsis yog tias lub stirrer tsis tas yuav tsum siab, thiab tsuas yog ib lub stirrer muaj hwj chim txaus los ua kom cov hydroxyethyl fibers uniformly dispersed nyob rau hauv cov tshuaj yog siv. . ua tau. Ntxiv stirring kom txog thaum tag nrho yaj mus rau hauv ib tug viscous tov. Nws yuav tsum tau muab sau tseg tias cov pwm inhibitor yuav tsum tau ntxiv rau niam cawv kom sai li sai tau.
3. nrog porridge
Txij li cov organic hnyav yog cov kuab tshuaj tsis zoo rau hydroxyethyl cellulose, cov kuab tshuaj organic no tuaj yeem siv los muab cov porridge. Feem ntau siv cov kuab tshuaj organic xws li ethylene glycol, propylene glycol, thiab zaj duab xis qub (xws li hexane lossis diethylene glycol butyl acetate), dej khov kuj yog cov kuab tshuaj tsis zoo, yog li dej khov feem ntau siv ua ke nrog cov kua dej organic. porridge. Cov porridge zoo li hydroxyethyl cellulose tuaj yeem ncaj qha ntxiv rau cov xim. Hydroxyethyl cellulose tau txaus soaked nyob rau hauv porridge. Thaum ntxiv rau cov xim, nws dissolves tam sim ntawd thiab thickens. Tom qab ntxiv, nws yog ib qho tsim nyog yuav tsum tau ua kom tsis tu ncua kom txog thaum hydroxyethyl cellulose yog yaj tag thiab homogeneous. Feem ntau, cov porridge yog tov nrog ib feem ntawm cov organic hnyav lossis dej khov thiab ib feem ntawm hydroxyethyl cellulose. Tom qab li 5 mus rau 30 feeb, cov hydroxyethyl cellulose yog hydrolyzed thiab remarkably nce. Feem ntau, cov av noo nyob rau lub caij ntuj sov yog siab dhau thiab yuav tsum tsis txhob siv rau porridge.
4. Ceev faj thaum siv hydroxyethyl cellulose niam cawv
Txij li hydroxyethyl cellulose (HEC)yog granule kho, nws yog ib qho yooj yim mus lis thiab yaj nyob rau hauv dej tsuav yog hais tias cov nram qab no teeb meem.
(1) Ua ntej thiab tom qab sib ntxiv ntawm hydroxyethylcellulose, nplawm yuav tsum tau txuas ntxiv mus kom txog thaum cov tshuaj tau meej meej thiab meej.
(2) Nws yuav tsum maj mam sieved rau hauv lub tank tov. Tsis txhob ntxiv cov hydroxyethyl cellulose uas tau tsim los rau hauv ib qho thaiv thiab ib lub duab kheej kheej ncaj nraim rau hauv lub tank sib tov.
(3) Cov dej kub thiab tus nqi pH hauv dej muaj kev sib raug zoo nrog kev sib cais ntawm hydroxyethyl cellulose, thiab yuav tsum tau saib xyuas tshwj xeeb.
(4) Tsis txhob ntxiv qee cov tshuaj alkaline rau qhov sib tov ua ntej cov hmoov hydroxyethyl cellulose ntub dej. Ua kom pH tom qab soaking pab kom yaj.
(5) Ntxiv cov pwm inhibitors kom sai li sai tau.
(6) Thaum siv cov viscosity siab hydroxyethyl cellulose, niam cawv concentration yuav tsum tsis txhob siab tshaj 2.5-3% (los ntawm qhov hnyav), txwv tsis pub leej niam cawv yog qhov nyuaj rau kev daws.
Post lub sij hawm: Jan-03-2019