Hydroxyethylulose (HEC) yog siv cov polymer nyob rau hauv cov xim thiab txheej ua qauv tsim qauv vim nws cov khoom siv rheological thiab kev ua haujlwm. Qhov no dej-soluble polymer yog muab los ntawm cellulose, lub ntuj polymer pom hauv tsob ntoo cell phab ntsa. HEC yog ib qho kev ntxiv ntxiv uas imparts ntau yam ntawm cov khoom lag luam xav tau xim thiab txheej txheej yas, suav nrog cov khoom siv ua kom ruaj khov, ua kom khov kho.
1. Taw qhia rau hydroxyethyl cellulose (HEC)
(1). Cov qauv tshuaj lom neeg thiab cov khoom ntawm HEC:
Hydroxyethyl cellulose yog hloov kho cellulose ether nrog hydroxyethyl pab pawg txuas nrog lub cellulose caj qaum.
Cov qib degree (DS) sawv cev rau cov pab pawg nruab nrab ntawm cov xov xwm hydroxyrd
(2) .solubility thiab sib xyaw:
HEC yog yooj yim soluble nyob rau hauv ob qho dej txias thiab dej kub, ua rau nws yooj yim rau kev sib xyaw ua ke rau hauv cov dej-raws cov txheej txheem ua yeeb yam.
Nws tau sib xws nrog ntau ntau yam ntawm lwm cov polymers, ntxiv thiab cov kuab tshuaj feem ntau siv nyob rau hauv cov xim pleev xim thiab pleev xim.
2.Rheological yam ntxwv ntawm HEC hauv cov xim tha xim thiab txheej
(1). Thickening thiab rheology tswj:
Ib qho ntawm cov haujlwm tseem ceeb ntawm HEC hauv cov txheej txheej yog ua kom cov tuab tuab, muab viscosity yuav tsum tau txais daim ntawv thov thiab zaj duab xis.
Hec pab nrog rhuaology tswj, tiv thaiv sag thiab ua kom pom kev txhuam hniav zoo lossis tshuaj tsuag.
(2.). Peestudoplastic cwj pwm:
Hec coparts pseudopastic cwj pwm rau txheej txheej, lub ntsiab lus uas viscosity txo qis nyob hauv qab shear, ua daim ntawv thov yooj yim dua.
Cov yeeb yam no yog qhov tseem ceeb rau kev ua tiav txawm tias cov menyuam los sis txhuam cov cim.
(3.) Ua kom ruaj khov ntawm cov pigments thiab fillers:
HEC pab ncua cov kob thiab fillers, tiv thaiv kev daws teeb lub sijhawm cia thiab thov.
Txhim kho cov xim dispersion txhim kho cov xim txhim kho thiab muaj kev ruaj khov ntawm txheej kawg.
3. Kev ua haujlwm zoo ntawm HEC hauv cov txheej txheem txheej txheem
(1). Txhim kho cov dej cia:
HEC Muab cov dej ua haujlwm hauv txheej ua yeeb yam, kev tiv thaiv kev ua kom qhuav thiab nthuav dav qhib lub sijhawm, uas yog qhov tseem ceeb kom ua tiav ib qho kev ua tiav.
(2.). Zaj duab xis tsim thiab Adhesion:
Lub xub ntiag ntawm cov txheej txheem pab ua cov yeeb yaj kiab txuas ntxiv thiab nplaum kom txhim kho adhesion mus rau ntau yam ntawm substrates.
Nws txhim kho cov yeeb yaj kiab kev ncaj ncees thiab cov sijhawm ntev.
(3.). Txo qis kev txaws:
Hec cov hluav taws xob ua ke pab txo cov plaub fab thaum cov menyuam lossis txhuam daim ntawv thov, ua kom lub cev nqus tsev huv si, ntau dua qub txheej txheem.
4.Qhov kev ceev faj thiab kev sib haum xeeb
(1). Kev pom zoo tshaj plaws thiab siv qib kev siv:
Yuav tsum siv HEC hauv cov txheej txheej yuav tsum tau ua tib zoo xav txog kev pom zoo thiab tsim kev sib xyaw ua ke.
Feem ntau, kev pom zoo li ntawm 0.1% rau 2% los ntawm qhov hnyav, tab sis theem siab nyob ntawm cov kev xav tau tshwj xeeb.
(2). Phemitivity:
Hec kev ua tau zoo yuav raug cuam tshuam los ntawm Ph Phaj Txheej Txheej Txheej Txheej. Qhov sib xyaw ntawm HEC nrog lwm cov kev sib ntxiv yuav tsum tau txiav txim siab thiab tus lej PHEEJ Yog tias tsim nyog.
(3) .temperature stability:
Hec yog ruaj khov tshaj qhov ntau qhov ntau, tab sis ntev nthuav tawm rau kev kub siab yuav ua rau muaj kev tawm tsam. Cov kws sau ntawv yuav tsum txiav txim siab xav tau kev thov.
5. Ib puag ncig thiab tswj kev txiav txim siab
(1). Cuam tshuam ib puag ncig:
HEC tau muab los ntawm cellulose, cov peev txheej txuas ntxiv dua tshiab, thiab yog biodegradable. Nws qhov cuam tshuam ib puag ncig yog feem ntau suav tias yog qis.
(2.). Kev cai ua raws cai:
Cov kws sau ua ke yuav tsum tau kom ntseeg tau tias kev siv cov kev ua haujlwm ntawm Hec nrog cov kev cai hauv zos thiab thoob ntiaj teb hais txog kev siv tshuaj lom thiab pleev xim.
6. Yav Tom Ntej Cov Qauv thiab Kev Tsim Kho
(1). Kev nce qib ntawm HEC thev naus laus zis:
Ua ntej tshawb fawb lub hom phiaj los txhim kho kev ua haujlwm ntawm Hecs los ntawm kev hloov kho, xws li qhia txog lawv cov kev faib tawm cov haujlwm tshiab.
(2). Green Chemistry thiab muaj kev coj ua:
Cov xim thiab pleev xim kev lag luam tau nce tsom mus rau kev ruaj khov. Cov kws sau ntawv yog tshawb nrhiav cov kev hloov kho ib puag ncig thiab cov kev coj ua, suav nrog cov xyoob ntoo xyoob ntoo polymers thiab cov kuab tshuaj hauv nroog.
Hydroxyethylulose (HEC) ua lub luag hauj lwm tseem ceeb ntawm cov xim thiab pleev kev lag luam, ua haujlwm zoo thiab kev ua tiav. Nws cov vagatility, sib thooj thiab ib puag ncig kev nyiam ua kom nws muaj txiaj ntsig ntxiv kom ua tiav cov yam ntxwv xav tau hauv cov dej lim dej. Raws li kev lag luam txuas ntxiv hloov zuj zus, kev tshawb fawb txuas ntxiv thiab kev tshawb fawb tshiab hauv kev siv qib siab hauv kev siv cov tshuaj lom neeg zoo sib xws hauv cov kev daws teeb meem.
Lub Sijhawm Post: Feb-19-2025