Yuav siv hydroxyethyl cellulose li cas hauv cov xim latex
1. Hydroxyethyl cellulose siv los ua porridge: Vim tias hydroxyethyl cellulose tsis yooj yim yaj rau hauv cov organic solvents, qee cov organic solvents siv tau los ua porridge. Dej khov kuj yog cov kuab tshuaj tsis zoo, yog li dej khov feem ntau siv ua ke nrog cov kua organic los ua porridge. Porridge zoo li hydroxyethyl cellulose tuaj yeem ntxiv ncaj qha rau cov xim latex. Hydroxyethyl cellulose tau raug tsau tag nrho hauv porridge. Thaum ntxiv rau cov xim, nws yaj sai thiab ua haujlwm ua cov thickener. Tom qab ntxiv, txuas ntxiv do kom txog thaum hydroxyethyl cellulose tawg tag thiab yaj. Feem ntau, porridge yog ua los ntawm kev sib xyaw rau feem ntawm cov organic solvent lossis dej khov nrog ib feem ntawm hydroxyethyl cellulose. Tom qab li 5-30 feeb, hydroxyethyl cellulose yuav hydrolyzed thiab pom tseeb o. (Nco ntsoov tias cov av noo ntawm cov dej dav dav yog siab dhau thaum lub caij ntuj sov, yog li nws yuav tsum tsis txhob siv los ua porridge.)
2. Ntxiv hydroxyethyl cellulose ncaj qha thaum sib tsoo cov xim: Txoj kev no yooj yim thiab siv sijhawm luv luv. Cov txheej txheem ntxaws ntxaws yog raws li nram no:
(1) Ntxiv cov dej huv kom tsim nyog rau hauv lub thoob loj ntawm cov khoom sib tov siab (feem ntau, cov khoom siv ua zaj duab xis thiab cov neeg sawv cev ntub dej ntxiv rau lub sijhawm no)
(2) Pib do tas li ntawm qhov ceev qis thiab maj mam thiab sib npaug ntxiv hydroxyethyl cellulose
(3) Txuas ntxiv do kom txog thaum tag nrho cov khoom me me sib npaug thiab ntub dej
(4) Ntxiv cov tshuaj tiv thaiv kab mob mildew los kho tus nqi PH
(5) Do kom txog thaum tag nrho cov hydroxyethyl cellulose yaj tag (qhov viscosity ntawm cov tshuaj nce ntxiv ntau), tom qab ntawd ntxiv lwm cov khoom hauv cov mis, thiab zom kom txog thaum cov xim tau tsim.
3. Npaj hydroxyethyl cellulose nrog niam cawv rau kev siv tom qab: Txoj kev no yog npaj niam cawv nrog qhov concentration siab dua ua ntej, thiab tom qab ntawd ntxiv rau hauv cov xim latex. Qhov zoo ntawm txoj kev no yog tias nws muaj kev ywj pheej ntau dua thiab tuaj yeem ntxiv ncaj qha rau cov xim tiav, tab sis nws yuav tsum tau khaws cia kom zoo. . Cov kauj ruam thiab txoj kev zoo ib yam li cov kauj ruam (1) - (4) hauv txoj kev 2, qhov sib txawv yog tias tsis tas yuav muaj cov khoom sib xyaw siab, thiab tsuas yog qee cov khoom sib xyaw nrog lub zog txaus kom cov hydroxyethyl fiber sib kis sib npaug hauv cov tshuaj yog Can. Txuas ntxiv do tas li kom txog thaum yaj tag rau hauv cov tshuaj viscous. Nws yuav tsum tau sau tseg tias tus neeg sawv cev antifungal yuav tsum tau ntxiv rau cov xim niam cawv sai li sai tau.
4 Tej yam uas yuav tsum tau saib xyuas thaum npaj cov dej haus hydroxyethyl cellulose
Vim tias hydroxyethyl cellulose yog cov hmoov ua tiav lawm, nws yooj yim rau kev tuav thiab yaj nws hauv dej tsuav yog cov khoom hauv qab no tau them sai sai.
(1) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum tau do tas li kom txog thaum cov tshuaj tiav thiab meej.
(2) Nws yuav tsum tau maj mam sifted rau hauv lub tank sib tov, thiab tsis txhob ncaj qha ntxiv ntau hydroxyethyl cellulose uas tau tsim cov lumps lossis pob rau hauv lub tank sib tov.
(3) Qhov kub ntawm dej thiab tus nqi pH hauv dej muaj kev sib raug zoo nrog kev yaj ntawm hydroxyethyl cellulose, yog li yuav tsum tau them sai sai.
(4) Tsis txhob ntxiv qee yam alkaline rau hauv qhov sib tov ua ntej cov hmoov hydroxyethyl cellulose raug ntub dej. Kev tsa pH tom qab ntub dej pab kom yaj.
(5) Kom deb li deb tau, ntxiv cov tshuaj tua kab mob fungal thaum ntxov.
(6) Thaum siv cov hydroxyethyl cellulose uas muaj viscosity siab, qhov concentration ntawm cov dej cawv niam yuav tsum tsis txhob siab tshaj 2.5-3% (los ntawm qhov hnyav), txwv tsis pub cov dej cawv niam yuav nyuaj rau kev tuav.
Cov yam tseem ceeb uas cuam tshuam rau qhov viscosity ntawm cov xim latex:
(1) Vim muaj kev sib xyaw ntau dhau, cov av noo yuav kub dhau thaum lub sijhawm tawg paj.
(2) Tus nqi ntawm lwm cov khoom ua kom tuab ntuj hauv cov xim pleev xim thiab qhov piv ntawm tus nqi rau hydroxyethyl cellulose.
(3) Seb qhov ntau ntawm surfactant thiab qhov ntau ntawm cov dej siv hauv cov mis pleev xim puas tsim nyog.
(4) Thaum tsim cov roj hmab latex, qhov ntau ntawm cov oxide xws li cov catalyst seem.
(5) Kev xeb ntawm cov khoom ua kom tuab los ntawm cov kab mob me me.
(6) Hauv cov txheej txheem ua xim, seb cov kauj ruam ntawm kev ntxiv cov thickener puas tsim nyog.
7 Qhov ntau cov npuas cua tseem nyob hauv cov xim, qhov ntau dua qhov viscosity
Lub sijhawm tshaj tawm: Lub Peb Hlis-04-2023