Hydroxyethyl cellulose (HEC) yog qhov tseem ceeb ntxiv rau hauv dej-raws cov xim looj xim zoo nkauj, pab kom muaj ntau yam ntawm cov xim ua haujlwm thiab cov yam ntxwv. Qhov no feem ntau polymer, muab tau los ntawm cellulose, muaj cov txiaj ntsig ntau uas txhim kho qhov zoo thiab ua haujlwm ntawm looj xim.
1. Spreadden rau HEC:
Hydroxyethyl cellulose yog tsis-ionic, dej-soluble polymer muab tau los ntawm cellulose los ntawm kev hloov kho tshuaj lom neeg. Nws yog dav siv nyob rau hauv ntau yam kev lag luam, suav nrog cov xim tsev thiab txheej, tshuaj pleev ib ce, tshuaj, thiab cov khoom siv, vim nws cov khoom ntiag tug. Nyob rau hauv cov ntsiab lus ntawm dej-raws li cov xim paug dej, hec ua haujlwm ua cov kev tswj hwm ntau yam ntxiv, ua kom muaj zog, thiab muaj kev ruaj khov rau cov qauv.
1.Role ntawm HEC hauv dej-based latex xim tsim qauv:
Rheology tswj:
Hec ua lub luag haujlwm tseem ceeb hauv kev tswj hwm cov khoom ntawm cov dej ntawm cov dej-raws li cov xim yas. Los ntawm kev kho cov concentration ntawm HEC, pleev xim cov tuam ntxhab tuaj yeem ua tiav cov viscosity thiab kev coj cwj pwm.
Kev tsim kho rheological kom nruj tias cov xim muaj peev xwm thov tau zoo thiab tusyees rau ntau qhov chaw, txhim kho cov neeg siv khoom tag nrho.
Tus neeg sawv cev tuab:
Raws li tus neeg sawv cev tuab tuab, HEC nce cov viscosity ntawm cov xim looj xim looj. Qhov no thickening cuam tshuam sagging lossis dripping thaum daim ntawv thov, tshwj xeeb tshaj yog nyob ntawm qhov chaw ntsug.
Ntxiv mus, HEC suav daws cov kev ncua ntawm cov pigments thiab fitters nyob rau hauv cov xim, tiv thaiv kev faib tawm thiab ua kom cov xim xa tawm.
Stabilizer:
Hi pab txhawb rau lub sijhawm ntev ruaj khov ntawm cov xim dej-raws li cov xim yas los ntawm kev tiv thaiv theem sib cais thiab kev sib cais thiab kev ua yeeb yam.
Nws lub peev xwm los ua ib qho ruaj khov colloidal system ua kom cov cheebtsam ntawm cov xim sib xyaw ua ke, txawm tias thaum cia thiab tsheb thauj mus los.
Dej khaws cia:
HEC muaj cov dej ua tau zoo heev, uas tau txais txiaj ntsig thaum lub sijhawm ua kom qhuav ntawm cov xim tsev.
Los ntawm cov dej khaws cia tsis pub dhau cov yeeb yaj kiab zaj duab xis, HEC profotes uniform kom qhuav, txo cov kev tawg lossis txo cov nplaum rau lub substrate.
Zaj duab xis tsim:
Thaum lub sij hawm ziab thiab kho theem, hec cuam tshuam cov zaj duab xis tsim ntawm cov xim yas.
Nws pab txhawb rau kev txhim kho ntawm cov cohesive zaj duab xis, txhim kho qhov kev ua tau zoo tag nrho thiab kev ua haujlwm ntev ntawm cov txheej.
Cov khoom ntawm HEC:
Dej Solubility:
HEC tau yooj yim soluble hauv dej, tso cai rau cov xim txuas ntxiv mus rau hauv cov xim pleev xim rau cov xim.
Nws cov solubility Facilitates cov kev sib cais tsis sib xws nyob rau hauv cov xim av matrix, ua kom muaj kev ua tau zoo sib xws.
Cov xwm tsis-ionic:
Raws li cov tsis-ionic polymer, HEC tau sib haum nrog ntau lwm cov xim ntxiv thiab cov khoom xyaw.
Nws cov xwm tsis-ionic minimizes qhov kev pheej hmoo ntawm kev sib txuas lus tsis txaus ntseeg lossis txoj hmoo ntawm cov xim tsim.
Viscosity tswj:
HC cov khoom ua pov thawj dav dav ntawm cov viscosity qib, pub cov xim pleev xim rau tailor cov khoom sib dhos raws li cov kev cai tshwj xeeb.
Cov qib sib txawv ntawm HEC muaj sib txawv qib ntawm cov qib thicking zoo thiab shear-thinning tus cwj pwm.
Kev sib haum:
HEC tau sib haum nrog ntau cov xim cov khoom xyaw, suav nrog cov xim yas, xim pigers, pigments, bapocides, thiab cov neeg sawv cev.
Nws txoj kev sib haum xeeb txhim kho cov khoom ntawm cov dej-based yas xim formulations, ua kom txoj kev txhim kho cov khoom lag luam customized rau ntau yam kev siv.
3. Cov ntaub qhwv ntawm HEC hauv cov xim pleev xim dej:
Sab hauv thiab sab nrauv cov xim tha xim:
HEC yog siv nyob rau hauv ob qho tib si sab hauv thiab sab nrauv-raws cov xim tsev kom ua tiav cov khoom zoo thiab kev ua tau zoo.
Nws ua kom cov ntawv thov du, cov kev pab them nqi tsis zoo, thiab lub sijhawm ntev ntawm cov xim pleev xim.
Textured tas:
Hauv cov xim pleev xim rau, hi ua rau muaj kev sib xws thiab ua haujlwm ntawm cov khoom.
Nws pab hauv kev tswj hwm cov ntawv nyeem thiab cov qauv tsim, tso cai rau kev tsim cov khoom xav tau ua tiav.
Primer thiab Undercoat Tsim Qauv:
HEC tau sib xyaw ua ke rau hauv Primer thiab Undercoat tsim los txhim kho adhesion, thiab noo noo tsis kam.
Nws txhawb nqa kev tsim ntawm cov khaub ncaws hnav thiab ruaj khov txheej, txhim kho cov nplaum nplaum tag nrho thiab ruaj khov ntawm cov xim pleev xim rau tom ntej.
Tshwj xeeb txheej txheej:
HEC nrhiav cov ntawv thov hauv cov xim tshwj xeeb, xws li cov xim sib xyaw ua ke, cov xim hluav taws xob rov ua kom zoo, tiv thaiv corrosion, thiab qis-voc.
Nws cov versatility thiab kev ua tau zoo-txhim kho cov khoom ua rau nws muaj txiaj ntsig ntxiv hauv ntau qhov niche hauv ntau qhov kev lag luam txheej.
4.Adavages ntawm kev siv HEC hauv cov xim pleev cov dej zoo:
Txhim kho cov khoom thov:
Hec Irrossts zoo heev ntws thiab leveling cov kab yees rau looj cov xim tsev, kom ua tiav cov ntawv thov du thiab hnav.
Nws txo cov teeb meem xws li txhuam cov cim, cov menyuam stippling, thiab uneven txheej tuab tuab, ua rau muaj kev ua tiav kev ua tiav.
Txhim kho kev ruaj khov thiab lub neej lub neej:
Qhov sib ntxiv ntawm HEC kom tau kev ruaj ntseg thiab txee lub neej ntawm cov dej-raws li cov xim paug los ntawm kev tiv thaiv theem sib cais thiab kev sib cais.
Xim formulations Muaj hec tseem siv tau homogeneous thiab siv tau rau ncua sijhawm, txo cov khoom pov tseg thiab ua kom muaj kev ncaj ncees khoom.
Customizable Tsim:
Pleev xim tuam ntxhab tuaj yeem hloov kho lub zog rheological ntawm cov xim tsev yas los ntawm kev xaiv cov qib tsim nyog thiab kev pom zoo ntawm HEC.
Qhov kev hloov pauv no tso cai rau kev txhim kho cov qauv ntawm cov kev ua tau zoo uas ua tau raws li cov kev xav tau thiab cov kev xav tau.
Kev daws keeb eco:
HEC tau muab los ntawm cov khoom siv tau yooj yim dua, ua rau nws muaj kev ruaj ntseg thiab ib puag ncig zoo ntxiv rau cov xim pleev xim rau cov dej.
Nws cov biodegradity thiab tsawg toxicity profile pab txhawb rau eco-friendly formulations, sib dhos nrog cov qauv yas ntsuab thiab cov cai.
Hydroxyethyl cellulose (HEC) ua si pivotal lub luag hauj lwm hauv cov dej-raws li cov xim huv, ua kom muaj txiaj ntsig, thiab lwm yam kev ua tau zoo. Nws cov vagatility, sib thooj, thiab kev sib txawv ntawm kev ua rau nws nyiam ntxiv rau cov xim tsim xim rau kev tsim cov teeb meem zoo rau ntau yam kev siv. Los ntawm kev nkag siab cov khoom siv thiab cov ntawv thov ntawm cov ntawv sau xim HEC, xim pleev xim tuaj yeem ua kom tau raws li cov kev ua tiav kom tau raws li cov kev xav tau ntawm cov txheej txheem kev lag luam.
Lub sijhawm Post: Plaub-26-2024