Hauv kev lag luam niaj hnub coatings, kev ua haujlwm ib puag ncig tau dhau los ua ib qho tseem ceeb rau kev ntsuas txheej zoo.Hydroxyethyl cellulose (HEC), raws li cov dej-soluble polymer thickener thiab stabilizer, yog dav siv nyob rau hauv architectural coatings, latex xim thiab dej-raws li txheej. HEC tsis tsuas yog txhim kho daim ntawv thov kev ua tau zoo ntawm cov txheej txheem, tab sis kuj muaj kev cuam tshuam loj heev rau lawv cov khoom ib puag ncig.
1. Qhov chaw thiab cov yam ntxwv ntawm HEC
HEC yog ib qho polymer compound tau los ntawm kev hloov kho tshuaj ntawm cov cellulose, uas yog biodegradable thiab tsis muaj tshuaj lom. Raws li cov khoom siv ntuj tsim, nws cov txheej txheem tsim khoom thiab siv tau muaj feem cuam tshuam rau ib puag ncig. HEC tuaj yeem ua kom ruaj khov dispersions, kho viscosity thiab tswj rheology hauv txheej txheej txheej txheej, thaum zam kev siv cov tshuaj ntxiv uas tsim kev puas tsuaj rau ib puag ncig. Cov yam ntxwv no tau tsim lub hauv paus rau HEC los ua cov khoom tseem ceeb hauv cov txheej txheem txheej txheej ib puag ncig.
2. Kev ua kom zoo ntawm cov khoom xyaw txheej
HEC txo qhov kev cia siab ntawm cov khoom xyaw uas muaj kuab lom heev los ntawm kev txhim kho txheej txheej. Piv txwv li, nyob rau hauv dej-raws li txheej txheej, HEC tuaj yeem txhim kho qhov dispersibility ntawm pigments, txo qhov kev thov rau cov kuab tshuaj raws li dispersants, thiab txo cov emissions ntawm cov teeb meem tshuaj. Tsis tas li ntawd, HEC muaj cov dej zoo solubility thiab ntsev tsis kam, uas tuaj yeem pab cov txheej txheem ua haujlwm ruaj khov hauv cov av noo ib puag ncig, uas txo qis qhov tsis ua haujlwm thiab pov tseg ntawm cov txheej txheem los ntawm ib puag ncig, yog li indirectly txhawb kev tiv thaiv ib puag ncig cov hom phiaj.
3. VOC tswj
Volatile organic compounds (VOC) yog ib qho tseem ceeb ntawm cov pa phem hauv cov txheej txheem ib txwm muaj thiab ua rau muaj kev hem thawj rau ib puag ncig thiab tib neeg kev noj qab haus huv. Raws li cov thickener, HEC tuaj yeem ua tiav hauv dej thiab sib haum nrog cov txheej txheem dej-raws li txheej txheem, txo qhov kev cia siab ntawm cov kuab tshuaj organic thiab txo VOC emissions los ntawm qhov chaw. Piv nrog cov tsoos thickeners xws li silicones lossis acrylics, daim ntawv thov ntawm HEC yog ntau tus phooj ywg ib puag ncig thaum tswj kev ua haujlwm ntawm cov txheej txheem.
4. Kev txhawb nqa kev tsim kho kom ruaj khov
Daim ntawv thov ntawm HEC tsis yog tsuas yog qhia txog kev tawm tswv yim ntawm cov ntaub ntawv zoo ib puag ncig, tab sis kuj txhawb kev txhim kho kev lag luam coatings. Ntawm qhov tod tes, raws li cov khoom muab rho tawm los ntawm cov khoom siv txuas ntxiv mus, HEC cov khoom siv tsawg dua ntawm cov roj fossil; Ntawm qhov tod tes, kev ua haujlwm siab ntawm HEC hauv cov txheej txheem ua kom lub neej kev pab cuam ntawm cov khoom, yog li txo cov peev txheej siv thiab tsim khoom pov tseg. Piv txwv li, hauv cov xim pleev xim zoo nkauj, cov qauv nrog HEC tuaj yeem txhim kho cov tshuaj txhuam hniav thiab cov khoom tiv thaiv sagging ntawm cov xim, ua rau cov khoom siv los ntawm cov neeg siv khoom ruaj khov, yog li txo qhov zaus ntawm kev rov tsim kho thiab ib puag ncig lub nra.
5. Kev Sib Tw Txuj Ci thiab Kev Txhim Kho Yav Tom Ntej
Txawm hais tias HEC muaj qhov zoo ntawm ib puag ncig kev ua haujlwm ntawm cov xim, nws daim ntawv thov kuj ntsib qee qhov kev sib tw. Piv txwv li, tus nqi tawg thiab shear stability ntawm HEC tej zaum yuav raug txwv nyob rau hauv cov qauv tshwj xeeb, thiab nws cov kev ua tau zoo yuav tsum tau txhim kho los ntawm kev txhim kho cov txheej txheem ntxiv. Tsis tas li ntawd, nrog kev nruj nruj ntawm ib puag ncig cov cai, qhov kev thov rau bio-based cov khoom xyaw hauv cov xim kuj nce ntxiv. Yuav ua li cas muab HEC nrog lwm cov ntaub ntawv ntsuab yog kev tshawb fawb yav tom ntej. Piv txwv li, kev txhim kho cov txheej txheem sib xyaw ntawm HEC thiab nanomaterials tuaj yeem tsis tsuas yog txhim kho cov khoom siv kho tshuab ntawm cov xim, tab sis kuj txhim kho nws cov tshuaj tua kab mob thiab tiv thaiv fouling kom tau raws li qhov xav tau ntawm ib puag ncig siab dua.
Raws li ib puag ncig tus phooj ywg thickener tau los ntawm ntuj cellulose,HECho txhim kho ib puag ncig kev ua tau zoo ntawm cov xim. Nws muab kev txhawb nqa tseem ceeb rau kev hloov pauv ntsuab ntawm kev lag luam xim niaj hnub los ntawm kev txo qis VOC emissions, optimizing xim formulations, thiab txhawb kev txhim kho kom ruaj khov. Txawm hais tias qee qhov kev nyuaj tseem yuav tsum tau kov yeej, qhov kev thov dav dav ntawm HEC hauv cov xim zoo nkauj yog qhov zoo thiab muaj peev xwm. Tawm tsam keeb kwm yav dhau los ntawm kev paub thoob ntiaj teb ib puag ncig kev paub, HEC yuav txuas ntxiv siv nws lub zog los tsav cov txheej txheem kev lag luam mus rau lub neej yav tom ntej ntsuab thiab muaj txiaj ntsig zoo dua.
Post lub sij hawm: Dec-17-2024