Daim ntawv thov txheej txheem ntawm hydroxyethyl cellulose hauv latex xim
1. Hydroxyethyl cellulose nrog porridge zoo li phenology: vim hydroxyethyl cellulose tsis yooj yim yaj hauv cov kuab tshuaj organic, qee cov kuab tshuaj organic tuaj yeem siv los ua porridge.Cov dej khov kuj yog cov kuab tshuaj phem, yog li nws feem ntau siv porridge nrog cov kua dej organic.Cov hydroxyethyl cellulose ntawm congee daim ntawv tuaj yeem ntxiv ncaj qha rau hauv cov xim emulsii.Hydroxyethyl cellulose tau saturated nyob rau hauv daim ntawv porridge.Thaum ntxiv rau cov xim, nws sai sai dissolves thiab thickens.Cia stirring kom txog thaum hydroxyethyl cellulose yog tag nrho dispersed thiab yaj.Ib qho porridge raug tsim los ntawm kev sib xyaw rau 6 feem ntawm cov kuab tshuaj organic lossis dej khov nrog ib feem ntawm hydroxyethyl cellulose.Tom qab li 5-30 feeb, cov hydroxyethyl cellulose hydrolyzes thiab pom tshwm.(Nws tau pom tias cov av noo ntawm lub caij ntuj sov yog siab dhau los siv rau porridge.)
2. Ntxiv hydroxyethyl cellulose ncaj qha rau cov xim sib tsoo: txoj kev no yooj yim thiab lub sijhawm luv.Cov txheej txheem nthuav dav yog raws li hauv qab no:
(1) Ntxiv cov dej ntshiab uas tsim nyog nyob rau hauv VAT ntawm siab yuav tsum txiav agitator (feem ntau, zaj duab xis tsim additives thiab wetting agents ntxiv rau lub sijhawm no)
(2) Pib do ntawm qis ceev tsis nres thiab maj mam ntxiv hydroxyethyl cellulose tusyees
(3) Txuas ntxiv do kom txog thaum tag nrho cov khoom sib npaug sib npaug thiab tsau
(4) Ntxiv mildew inhibitor thiab kho tus nqi PH
(5) Sib tov kom txog thaum tag nrho cov hydroxyethyl cellulose yog yaj tag (lub viscosity ntawm cov tshuaj nce ntau), ces ntxiv lwm yam khoom nyob rau hauv lub mis, thiab grind kom txog thaum nws ua xim.
3 hydroxyethyl cellulose nrog niam kua tos: txoj kev no yog thawj zaug nruab nrog ntau dua ntawm cov kua niam, thiab tom qab ntawd ntxiv cov xim latex, qhov zoo ntawm cov qauv no yog hloov tau yooj yim, tuaj yeem ncaj qha ntxiv cov xim tiav, tab sis kom tsim nyog cia.Cov kauj ruam thiab txoj hauv kev zoo ib yam li cov kauj ruam (1) - (4) hauv Txoj Kev 2, tshwj tsis yog tias lub tshuab txiav siab siab tsis tas yuav tsum tau thiab tsuas yog qee cov aggers uas muaj lub zog txaus kom cov hydroxyethyl fibers sib npaug sib npaug hauv cov tshuaj siv.Ntxiv stirring kom txog thaum nws dissolves tag mus rau hauv ib tug tuab tov.Nco ntsoov tias: tus neeg sawv cev antimildew yuav tsum tau muab ntxiv kom sai li sai tau hauv cov xim pleev xim.
4 Cov teeb meem xav tau kev saib xyuas thaum muab hydroxyethyl cellulose niam cawv
Txij li hydroxyethyl cellulose yog cov hmoov granular kho, nws yooj yim los lis thiab yaj hauv dej nrog kev ceev faj hauv qab no.
(1) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, yuav tsum tau nplawm, kom txog thaum cov tshuaj yog pob tshab thiab meej.
(2) Nws yog tsim nyog rau sieve hydroxyethyl cellulose mus rau hauv lub stirring tank maj mam.Tsis txhob ntxiv nws hauv qhov ntau lossis ncaj qha rau hauv lub tank stirring.
(3) Lub solubility ntawm hydroxyethyl cellulose yog pom tseeb hais txog cov dej kub thiab pH nqi ntawm cov dej, yog li tshwj xeeb yuav tsum tau them rau nws.
(4) Tsis txhob ntxiv qee yam tshuaj rau qhov sib tov ua ntej hydroxyethyl cellulose hmoov yog tsau nrog dej.Nce pH tom qab soaking pab yaj.
(5) Raws li qhov ua tau, thaum ntxov ntxiv ntawm mildew inhibitor.
(6) Thaum siv cov viscosity siab hydroxyethyl cellulose, qhov concentration ntawm niam cawv yuav tsum tsis txhob siab tshaj 2.5-3% (los ntawm qhov hnyav), txwv tsis pub niam cawv yuav nyuaj rau kev khiav lag luam.
Cov yam ntxwv cuam tshuam rau viscosity ntawm latex xim:
(1) Vim yog kev nplawm ntau dhau thiab cov av noo ntau dhau thaum dispersing.
(2) tus nqi ntawm lwm yam ntuj thickeners nyob rau hauv cov xim xim thiab qhov kev faib ua feem ntawm cov nyiaj nrog hydroxyethyl cellulose.)
(3) tus nqi ntawm qhov chaw activator thiab dej hauv cov xim pleev xim zoo ib yam.
(4 nyob rau hauv lub synthesis ntawm latex, residual catalyst oxide cov ntsiab lus ntawm tus xov tooj.
Microbial erosion ntawm thickener.
6 nyob rau hauv tus txheej txheem ntawm kev pleev xim, qhov kev txiav txim ntawm cov kauj ruam ntxiv thickener yog tsim nyog.
Qhov ntau cov pa npuas nyob hauv cov xim, qhov viscosity siab dua
Post lub sij hawm: Jun-02-2022