Tsom ntsoov rau Cellulose ethers

Puas muaj lwm yam txiaj ntsig rau kev siv hydroxyethyl cellulose hauv txheej?

Kev siv hydroxyethyl cellulose (HEC) hauv txheej txheej muaj ntau yam zoo, npog lub cev, cov txheej txheem ua haujlwm thiab kev siv cov teebmeem.

1. Thickening nyhuv

Hydroxyethyl cellulose yog cov thickener muaj txiaj ntsig uas tuaj yeem ua kom cov viscosity ntawm cov txheej txheej. Nws cov nyhuv thickening tuaj yeem ua tiav cov txiaj ntsig tseem ceeb ntawm qib qis ntxiv, yog li txhim kho daim ntawv thov kev ua haujlwm ntawm txheej txheej. Lub viscosity ntawm cov xim yog nruab nrab, uas tuaj yeem zam cov teeb meem xws li sagging thiab sagging thaum lub sij hawm tha xim, thiab txhim kho cov uniformity ntawm kev tsim kho thiab flatness ntawm txheej zaj duab xis.

2. Txhim khu kev ruaj ntseg

HEC muaj cov nyhuv stabilizing zoo hauv cov txheej txheem. Nws tuaj yeem txhim kho qhov tawg ntawm pigments thiab fillers los ntawm kev sib txuas ntawm lub cev sib txuas thiab tshuaj lom neeg, tiv thaiv kev daws teeb meem thiab delamination ntawm pigments thiab fillers thaum khaws lossis siv. Qhov no tsis tsuas yog ncua lub txee lub neej ntawm cov xim, tab sis kuj ua kom muaj kev faib tawm ntawm cov xim thaum siv.

3. Txhim kho rheology

Hydroxyethyl cellulose muaj kev cuam tshuam tseem ceeb ntawm rheology ntawm txheej txheej, ua rau cov txheej txheem nthuav tawm pseudoplastic (shear thinning) cov khoom. Ntawm qhov qis shear tus nqi, cov xim tuav lub siab viscosity, uas yooj yim rau sawv thiab khaws cia; thaum lub siab shear tus nqi (xws li thaum txhuam thiab txau), viscosity ntawm cov xim txo, ua kom yooj yim rau ntws thiab thov. Cov cuab yeej shear-thinning no ua rau cov txheej txheem yooj yim dua thaum siv, thiab cov yeeb yaj kiab txheej yog du thiab txawm.

4. Txhim kho sag kuj

Thaum siv cov xim pleev xim rau ntawm qhov chaw ntsug, HEC tuaj yeem txhim kho cov xim tsis kam rau sag. Qhov no yog vim nws cov nyhuv thickening thiab rheological zog uas tso cai rau cov xim kom sai sai tsim ib tug gel zoo li cov qauv tom qab daim ntawv thov, txo cov nyiam ntws, yog li tiv thaiv cov xim los ntawm sagging thiab sagging.

5. Txhim kho cov khoom moisturizing

HEC zoo khaws cov dej noo, yog li ncua lub sijhawm ziab ntawm cov xim. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau qee cov coatings uas yuav tsum tau ua haujlwm ntev, xws li cov xim ntoo, cov khoom siv tes ua xim, thiab lwm yam. Lub sijhawm ziab kom ntev ua rau tus tsim lub sijhawm ua haujlwm ntau dua thiab tsis txhob pleev xim cov cim thiab teeb meem kev tsim kho los ntawm kev ziab ntawm cov xim ntau dhau.

6. Txhim kho kev txhuam hniav

Txij li HEC txhim kho cov khoom rheological thiab thickening nyhuv ntawm cov xim, cov xim qhia tau zoo dua qib thaum txhuam. Thaum txhuam hniav, cov xim tuaj yeem kis tau tusyees yam tsis muaj txhuam txhuam, thiab qhov kawg txheej zaj duab xis yog du thiab muag heev. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov txheej txheem zoo, xws li cov rooj tog zaum, cov txheej txheem tsheb, thiab lwm yam.

7. Kho tau

HEC muaj cov tshuaj lom neeg ruaj khov thiab kev sib raug zoo thiab sib haum nrog ntau yam txheej txheem txheej txheej, xws li cov txheej txheem dej, cov xim latex, cov xim pleev xim rau cov roj, thiab lwm yam. Nws muaj qhov dav dav adaptability rau cov qauv sib txawv thiab cov khoom xyaw, yuav tsis hnov ​​​​mob rau lwm tus. cov khoom xyaw, thiab yuav tsis yooj yim ua rau cov tshuaj hloov pauv hauv cov mis.

8. Txhim kho txheej txheej

HEC tsis tsuas yog muab cov thickening thiab stabilizing cov teebmeem hauv cov txheej txheem, tab sis kuj txhim kho lub cev lub cev ntawm cov yeeb yaj kiab txheej. Piv txwv li, nws tuaj yeem txhim kho qhov tawg ua haujlwm, txhuam ua haujlwm thiab yooj yim ntawm txheej zaj duab xis. Qhov no ua rau cov txheej txheej kawg ruaj khov dua, muaj peev xwm tswj tau nws txoj kev zoo nkauj thiab kev ua haujlwm nyob rau hauv ntau yam ntawm ib puag ncig.

9. Kev tiv thaiv ib puag ncig

HEC yog cov khoom siv biodegradable nrog kev tiv thaiv ib puag ncig zoo. Piv nrog rau qee cov hluavtaws thickeners, nws muaj tsawg dua ib puag ncig thiab tsis tso cov khoom tsis zoo thaum siv. Qhov no yog nyob rau hauv txoj kab nrog kev tiv thaiv ib puag ncig siab ntawm kev lag luam coatings niaj hnub thiab tseem yoog raws li cov neeg siv khoom xav tau rau cov khoom ntsuab.

10. Yooj yim los tuav thiab tawg

HEC yooj yim yaj thiab tawg hauv dej thiab tsim cov kua dej tsis sib xws. Nyob rau hauv txheej txheej txheej txheej txheej, nws dissolution thiab dispersion ua rau cov txheej txheem ntau lawm yooj yim thiab tsis tshua muaj teeb meem ntawm agglomeration los yog tsis tiav dissolution, txo cov teeb meem nyob rau hauv cov txheej txheem ntau lawm thiab txhim kho ntau lawm efficiency.

Kev thov ntawm hydroxyethyl cellulose hauv txheej txheej muaj ntau yam zoo. Nws tsis tsuas yog txhim kho lub cev thiab kev tsim kho kev ua tau zoo ntawm cov txheej txheem, tab sis kuj txhim kho kev ruaj ntseg thiab kev tiv thaiv ib puag ncig ntawm cov txheej txheem. Nws ua lub luag haujlwm tseem ceeb hauv cov qauv xim niaj hnub, muab cov kev daws teeb meem zoo rau kev ua tiav cov duab zoo nkauj. Nrog rau kev tsim cov txheej txheem txheej txheem thiab kev sib txawv ntawm kev lag luam xav tau, daim ntawv thov kev cia siab ntawm HEC hauv txheej txheej yuav dav dua.


Lub sij hawm xa tuaj: Plaub Hlis-04-2024
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