Hydroxyethyl cellulose (HEC) yog tsis-ionic, dej-soluble polymer muab tau los ntawm cellulose. Nws yog dav siv nyob rau hauv cov qauv ntawm cov xim yas looj vim nws muaj peev xwm txhim kho ntau yam ntxwv ua kev ua tau zoo.
Rheology hloov kho
Viscosity tswj:
HEC feem ntau yog siv raws li kev ntseeg rheology hloov kho hauv cov xim looj. Nws nce viscosity ntawm cov xim, uas yog qhov tseem ceeb rau ntau yam:
Daim ntawv thov sib xws:
Qhov muaj txiaj ntsig zoo dua uas cov xim pleev xim yooj yim thiab tswj cov kev sib txuam tsis sib xws thaum ntawv thov. Qhov kev sib txuam no yog qhov tseem ceeb rau kev ua tiav ib qho du thiab txawm lub tsho loj tsis muaj sia los yog sagging.
Txhuam thiab cov menyuam daim ntawv thov:
Rau cov xim tau thov nrog txhuam lossis cov chais, txoj cai viscosity pab rau hauv cov xim uas tau yooj yim dua ntawm cov txhuam lossis cov menyuam thiab ua kom haum rau cov chaw du rau hauv cov chaw. Nws tseem yuav txo qhov dripping ntawm cov xim pleev xim, yog li tsis tshua muaj cov khoom siv thiab mess.
Txau thov:
Hauv kev siv tshuaj txau, tswj cov viscosity yog qhov tseem ceeb los xyuas kom meej tias cov xim ua kom zoo nkauj tsis muaj kev sib txig sib txau. Hec pab hauv kev ua tiav txoj cai sib npaug ntawm fellity thiab viscosity rau kev txau txau.
Thixotropic Cwj Pwm:
Hec Cixotropic cov khoom siv rau cov xim tsev yas, lub ntsiab lus xim viscosity txo qis nyob hauv qab shear (thaum lub sij hawm txhuam hniav, lossis txau thaum shear yog muab tshem tawm. Tus cwj pwm no tso cai rau cov ntawv thov yooj yim thiab ntsuas cov xim tha xim thaum ua kom nws nyob hauv qhov chaw thiab tsis khiav lossis sag tom qab daim ntawv thov.
Kev Txiaj Ntsim Li Nyob
Kev ncua ntawm cov pigments thiab fillers:
HEC muab cov xim muaj zog ntawm cov xim looj kua muag los ntawm kev ua yeeb yam raws li kev ncua tus neeg sawv cev. Nws pab kom cov pigments, fillers, thiab lwm yam khoom siv sib xyaw ua ke tsis sib xws hauv cov xim. Qhov no txwv tsis pub los sis clumping, uas tuaj yeem ua rau tsis sib xws hauv cov xim thiab kev ntxhib los mos.
Kev tiv thaiv ntawm theem sib cais:
Hec pab nyob rau hauv kev tswj hwm emulsion ruaj ntseg ntawm cov xim looj kua yas los ntawm kev tiv thaiv theem sib cais. Qhov no yog qhov tseem ceeb rau lub sijhawm ntev ntawm tus pleev xim lub txee lub neej, ua kom cov homogeneous dhau lub sijhawm tsis muaj kev xav tau ntau zaus.
Daim Ntawv Thov Khoom Siv
Txhim kho ntws thiab qib:
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv HEC hauv looj cov xim tsev yog qhov kev txhim kho hauv cov khoom ntws thiab ua haujlwm. Tom qab daim ntawv thov, xim pleev xim kis kom tusyees ntawm sab, txo cov txhuam txhuam thiab cov menyuam cov hlua. Qhov no ua rau muaj kev ua tiav, kev ua tiav.
Txhim kho qhib lub sijhawm:
HEC tuaj yeem nce lub sijhawm qhib ntawm cov xim looj kua yas, uas yog lub sijhawm thaum cov xim tha xim tseem ua haujlwm tom qab daim ntawv thov. Qhov no muaj txiaj ntsig tshwj xeeb rau cov haujlwm loj, tso cai rau cov neeg pleev kob ua kom haum lossis kho ua ntej cov xim pib teeb.
Anti-splattering:
Thaum lub sijhawm ntawv thov, tshwj xeeb nrog cov chais, tawg tuaj yeem yog qhov teeb meem. Hec Recuces phem sib txig los ntawm kev muab txoj cai tshuav ntawm viscosity thiab elasticity, ua rau daim ntawv thov tshuaj ntxuav thiab ntau dua qub.
Zaj duab xis thiab ruaj khov
Zaj duab xis muaj zog thiab yooj:
Hi pab txhawb rau cov khoom siv tshuab ntawm cov xim qhuav xim. Nws txhim kho qhov yooj thiab tensile lub zog ntawm cov zaj duab xis, ua rau nws tiv taus ntau dua thiab tev. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv ib cheeb tsam uas cov xim pleev xim rau saum npoo yuav muaj kev kub ntxhov lossis kev ntxhov siab.
Txhim kho Adhesion:
Hec tuaj yeem txhim kho cov nplaum ntawm cov xim rau ntau hom. Qhov no kom ntseeg tau tias cov xim ua cov xim pleev xim rau cov nyiaj sib xws nrog, uas yog qhov tseem ceeb rau kev ua haujlwm ntev thiab ntev thiab ntev. Cov nplaum zoo tiv thaiv teeb meem xws li flaking thiab blistering.
Sib xyaw thiab Tsim Yooj Yim
Compatibility nrog lwm cov tshuaj ntxiv:
Hec yog sib xws nrog ntau yam ntawm lwm cov kev sib ntxiv siv nyob rau hauv cov xim tsev zoo, xws li biocides, tiv thaiv cov neeg sawv cev ua npuas ncauj, thiab coescents. Qhov kev sib raug zoo no tso cai rau cov ntawv sau cov xim cov xim ntawm cov khoom kom muaj kev sib cuam tshuam tsis muaj kev sib cuam tshuam.
Tsim kom yooj yim:
Vim nws cov hauj lwm zoo ntawm cov kev ua kom muaj ntau, hec muab kev tsim cov ntawv yooj yim. Cov nyiaj me me tuaj yeem hloov kho cov xim ntawm cov khoom, tso cai rau cov qauv siv nqi uas tsis muaj kev cuam tshuam.
Ib puag ncig thiab kev txiav txim siab nyab xeeb
Tsis-toxic thiab biodegradable:
HEC tau muab los ntawm cellulose, ua rau nws tsis muaj tshuaj lom thiab biodegradable additive. Nov yog qhov tseem ceeb rau kev txiav txim siab tam sim no, raws li muaj kev cog lus rau ib puag ncig cov phooj ywg zoo thiab cov khoom lag luam kom nyab xeeb. Kev siv ntawm Hec ua raws li cov ncauj ke no, ua rau muaj kev txhim kho ntawm Eco-phooj ywg looj cov xim tsev.
Tsawg VOC Kev Txhawb Nqa:
Txij li thaum HEC yog dej-soluble polymer thiab tsis tso tawm cov khoom sib txuas tsis huv (vocs), nws siv tau pab ua cov xim tsawg-voc. Qhov no tseem ceeb rau cov ntawv thov sab hauv tsev uas cov cua zoo yog kev txhawj xeeb.
Hydroxyethyl cellulose plays lub luag haujlwm tseem ceeb hauv kev txhim kho cov kev ua tau zoo ntawm cov xim yas ntawm nws cov multifaceted. Los ntawm kev txhim kho viscosity tswj, ruaj khov, kev thov ua kom muaj cov xim tawv, thiab ua yeeb yaj kiab looj tau yooj yim, thiab xa ib qho kev ua tiav zoo. Tsis tas li ntawd, nws tau txais kev sib txawv nrog lwm cov kev sib ntxiv thiab kev ua phooj ywg ib puag ncig ua rau nws xaiv cov xim zoo nkauj niaj hnub. Raws li qhov kev thov rau cov khoom lag luam xim zoo dua qub txuas ntxiv mus, lub luag haujlwm ntawm HEC hauv kev ua tiav cov hom phiaj no tau ua ib qho tseem ceeb ntxiv.
Lub Sijhawm Post: Feb-18-2025