Abstract:
Hydroxyethylcellulose (HEC) yog ntau yam polymer nrog ntau yam kev siv thoob plaws ntau lub lag luam, ib qho ntawm nws cov kev siv tseem ceeb yog nyob rau hauv kev tsim cov xim thiab coatings.Peb delve rau hauv cov qauv tshuaj ntawm HEC, nws cov khoom rheological, thiab yuav ua li cas cov khoom no muab nws cov formulations tshwj xeeb zoo.
qhia:
Hydroxyethylcellulose (HEC) yog cov dej-soluble polymer muab tau los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa.HEC muaj cov khoom tshwj xeeb vim nws cov qauv tshuaj, ua rau nws zoo tagnrho rau ntau hom kev lag luam.Nyob rau hauv lub ntiaj teb no ntawm cov xim thiab coatings, HEC plays lub luag haujlwm tseem ceeb hauv kev txhim kho ntau yam khoom tseem ceeb xws li kev tswj viscosity, tuav dej, tsim cov yeeb yaj kiab thiab kev ruaj ntseg tag nrho.
Chemical structure thiab rheological zog ntawm HEC:
Kev nkag siab txog cov qauv tshuaj ntawm HEC yog qhov tseem ceeb rau kev nkag siab txog nws txoj haujlwm hauv cov xim thiab cov txheej txheem.HEC yog muab los ntawm cellulose los ntawm ntau cov tshuaj hloov kho uas qhia cov pab pawg hydroxyethyl.Lub xub ntiag ntawm cov pab pawg no muab HEC dej solubility, ua rau nws muaj txiaj ntsig zoo hauv cov qauv dej.
Lub zog rheological ntawm HEC, tshwj xeeb tshaj yog nws lub peev xwm thickening, yog qhov tseem ceeb hauv cov txheej txheem txheej txheej.HEC ua raws li kev hloov kho rheology, cuam tshuam rau tus cwj pwm ntws thiab viscosity ntawm txheej.Cov cuab yeej no yog qhov tseem ceeb los tiv thaiv cov xim xim, xyuas kom meej txawm tias daim ntawv thov thiab txhawb kev pom kev zoo thaum siv txhuam los yog cov menyuam.
Kev siv HEC hauv dej-raws li txheej:
Cov dej-raws li txheej txheej muaj nuj nqis rau lawv qhov cuam tshuam ib puag ncig qis thiab qis dua cov organic compound (VOC) cov ntsiab lus.HEC ua lub luag haujlwm tseem ceeb hauv cov qauv no los ntawm kev muab kev ruaj ntseg, thickening thiab rheology tswj.Cov polymer pab tiv thaiv cov xim xim thaum lub sijhawm khaws cia, ua kom cov viscosity zoo ib yam, thiab txhim kho kev ua haujlwm tag nrho ntawm cov xim.Tsis tas li ntawd, HEC pab txuas ntxiv lub sijhawm qhib, yog li ncua sijhawm thov ua ntej cov xim dries.
Kev siv HEC hauv cov kuab tshuaj raws li txheej:
Txawm hais tias cov dej-raws li txheej yog ib puag ncig tus phooj ywg, cov kuab tshuaj raws li cov qauv tseem muaj nyob rau hauv qee yam kev siv.HEC kev sib raug zoo nrog dej thiab cov kuab tshuaj ua rau nws muaj ntau yam kev xaiv rau cov kuab tshuaj raws li txheej.Nyob rau hauv cov formulations, HEC ua raws li ib tug binder, pab nyob rau hauv cov zaj duab xis tsim thiab adhesion.Nws lub peev xwm los tswj cov viscosity tshaj qhov kub thiab txias yog qhov tseem ceeb rau cov kuab tshuaj raws li cov tshuab, ua kom muaj kev ruaj khov thiab ua haujlwm zoo ib yam.
Hmoov txheej thiab HEC:
Hmoov txheej yog nrov rau lawv cov durability, ib puag ncig tus phooj ywg, thiab yooj yim ntawm daim ntawv thov.Ntxiv HEC rau hmoov txheej txhim kho lawv cov dej ntws thiab qib theem.Lub polymer pab tswj lub rheology ntawm hmoov txheej, kom ntseeg tau ib tug du, uniform zaj duab xis thaum lub sij hawm daim ntawv thov.Cov dej solubility ntawm HEC yog qhov muaj txiaj ntsig zoo hauv kev tsim cov txheej txheem ntawm cov hmoov txheej, muab txoj hauv kev yooj yim ntawm kev sib xyaw cov polymer rau hauv cov qauv.
HEC raws li stabilizer thiab dej tuav tus neeg sawv cev:
Ntxiv nrog rau nws lub luag haujlwm ua tus hloov kho rheology thiab khi, HEC ua haujlwm zoo hauv cov xim thiab txheej txheej.Cov polymer pab tiv thaiv theem sib cais thiab nag lossis daus, ua rau cov khoom ruaj khov mus ntev.Tsis tas li ntawd, HEC ua raws li cov dej khaws cia, txo cov dej noo thaum ziab.Qhov no yog ib qho tseem ceeb tshwj xeeb los xyuas kom meej cov yeeb yaj kiab tsim, adhesion thiab durability ntawm txheej.
nyob rau hauv xaus:
Hydroxyethylcellulose (HEC) yog ntau yam thiab tseem ceeb muaj nyob rau hauv cov xim thiab txheej.Nws tshwj xeeb ua ke ntawm dej solubility, rheology tswj, zaj duab xis-forming zog thiab txhim khu kev ruaj ntseg ua rau nws muaj txiaj ntsig additive rau ntau yam formulations.Los ntawm cov dej-raws li txheej rau cov kuab tshuaj-raws li txheej thiab hmoov formulations, HEC plays ib tug multifaceted lub luag hauj lwm nyob rau hauv kev txhim kho kev ua tau zoo thiab kom ntseeg tau cov khoom zoo kawg.Raws li qhov kev thov rau ib puag ncig tus phooj ywg thiab cov txheej txheem ua tau zoo tseem nce ntxiv, daim ntawv thov ntawm HEC zoo li yuav nthuav dav, ntxiv rau nws txoj haujlwm tseem ceeb hauv kev lag luam coatings.
Post lub sij hawm: Nov-28-2023