Hydroxyethyl cellulose hauv cov xim emulsion

Txoj kev siv hydroxyethyl cellulose hauv cov xim latex

1. Hydroxyethyl cellulosenrog porridge zoo li phenology: vim tias hydroxyethyl cellulose tsis yooj yim yaj hauv cov organic solvents, qee cov organic solvents tuaj yeem siv los ua porridge. Dej khov kuj yog cov kuab tshuaj tsis zoo, yog li nws feem ntau siv hauv porridge nrog cov kua organic. Cov hydroxyethyl cellulose ntawm daim ntawv congee tuaj yeem ntxiv ncaj qha rau hauv emulsii xim. Hydroxyethyl cellulose tau saturated hauv daim ntawv porridge. Thaum ntxiv rau cov xim, nws sai sai yaj thiab thickens. Khaws do kom txog thaum hydroxyethyl cellulose tag nrho dispersed thiab yaj. Ib qho porridge ib txwm yog ua los ntawm kev sib tov rau feem ntawm cov organic solvent lossis dej khov nrog ib feem ntawm hydroxyethyl cellulose. Tom qab li 5-30 feeb, hydroxyethyl cellulose hydrolyzes thiab pom tseeb nce. (Nws tau hais tias qhov av noo ntawm dej hauv lub caij ntuj sov siab dhau los siv rau porridge.)

2. Ntxiv hydroxyethyl cellulose ncaj qha rau hauv cov xim sib tsoo: txoj kev no yooj yim thiab lub sijhawm luv. Cov txheej txheem ntxaws ntxaws yog raws li nram no:

(1) Ntxiv dej ntshiab kom tsim nyog rau hauv VAT ntawm qhov siab yuav tsum txiav agitator (feem ntau, cov tshuaj ntxiv rau zaj duab xis thiab cov neeg sawv cev ntub dej ntxiv rau lub sijhawm no)

(2) Pib do ntawm qhov ceev qis yam tsis tau nres thiab maj mam ntxiv hydroxyethyl cellulose kom sib npaug.

(3) Txuas ntxiv do kom txog thaum tag nrho cov khoom me me sib npaug thiab ntub dej

(4) Ntxiv cov tshuaj tiv thaiv pwm thiab 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 nws ua xim.

3 lub hydroxyethyl cellulose nrog niam kua tos: txoj kev no yog thawj zaug nruab nrog cov kua niam ntau dua, thiab tom qab ntawd ntxiv cov xim latex, qhov zoo ntawm txoj kev no yog qhov yooj ywm dua, tuaj yeem ntxiv cov khoom tiav xim ncaj qha, tab sis rau qhov chaw cia khoom kom tsim nyog. Cov kauj ruam thiab cov txheej txheem zoo ib yam li cov kauj ruam (1) - (4) hauv Txoj Kev 2, tsuas yog tias lub tshuab txiav siab tsis tas yuav tsum tau thiab tsuas yog qee lub aggers nrog lub zog txaus kom khaws cov hydroxyethyl fibers sib npaug hauv cov tshuaj siv. Txuas ntxiv do kom txog thaum nws yaj tag nrho rau hauv cov tshuaj tuab. Nco ntsoov tias: tus neeg sawv cev antimildew yuav tsum tau ntxiv sai li sai tau hauv cov xim niam cawv.

4 Tej yam uas yuav tsum tau saib xyuas thaum muab cov kua txiv hmab txiv ntoo hydroxyethyl cellulose

Vim tias hydroxyethyl cellulose yog cov hmoov granule uas tau kho lawm, nws yooj yim rau kev tuav thiab yaj hauv dej nrog cov kev ceev faj hauv qab no.

(1) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, yuav tsum sib xyaw kom txog thaum cov tshuaj no pob tshab thiab meej.

(2) Yuav tsum tau lim cov hydroxyethyl cellulose rau hauv lub tank sib tov maj mam. Tsis txhob ntxiv ntau dhau los yog ncaj qha rau hauv lub tank sib tov.

(3) Qhov solubility ntawm hydroxyethyl cellulose yog qhov tseeb cuam tshuam nrog dej kub thiab pH tus nqi ntawm dej, yog li yuav tsum tau them sai sai rau nws.

(4) Tsis txhob ntxiv qee yam khoom tseem ceeb rau hauv qhov sib tov ua ntej muab cov hmoov hydroxyethyl cellulose ntub nrog dej. Kev tsa pH tom qab ntub pab yaj.

(5) Kom deb li deb tau, ntxiv cov tshuaj mildew inhibitor 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 nyuaj rau kev ua haujlwm.

Cov yam tseem ceeb uas cuam tshuam rau qhov viscosity ntawm cov xim latex:

(1) Vim muaj kev sib xyaw ntau dhau thiab cov av noo ntau dhau thaum tawg paj.

(2) qhov ntau ntawm lwm cov khoom ua kom tuab ntuj hauv cov mis pleev xim thiab qhov sib piv ntawm qhov ntau nroghydroxyethyl cellulose.)

(3) tus nqi ntawm cov khoom ua kom nto thiab dej hauv cov mis pleev xim yog sib xws.

(4 nyob rau hauv kev tsim cov latex, cov ntsiab lus catalyst oxide seem ntawm tus lej.

Kev puas tsuaj ntawm cov kab mob me me ntawm cov khoom ua kom tuab.

6 thaum ua xim, qhov kev txiav txim ntawm cov kauj ruam kom ntxiv cov thickener yog qhov tsim nyog.

Cov pa npuas ntau ntxiv nyob rau hauv cov xim, qhov viscosity siab dua.