HEC (Hydroxyethyl cellulose) ua lub luag haujlwm tseem ceeb hauv cov txheej txheem, pabcuam ntau yam haujlwm uas ua rau muaj cov khoom lag luam tag nrho thiab cov khoom lag luam zoo.
Taw qhia rau HEC hauv cov tsho tiv no:
Hydroxyethyl cellulose (HEC) yog tsis-ionic dej-soluble polymer muab tau los ntawm cellulose. Nws cov khoom tshwj xeeb ua rau nws muaj ntau yam khoom noj muaj ntau yam hauv ntau kev lag luam, suav nrog txheej txheej txheej. Hauv cov tsho tiv no, HEC pabcuam ua cov rheology kho tshuab, thickener, stabilizer, thiab zaj duab xis yav tas los, ntawm lwm yam. Nws cov qauv molecular, uas nta hydrophilic pawg, tso cai rau nws cuam tshuam kom zoo nrog dej thiab lwm yam hauv txheej txheej txheej txheej.
Rheology hloov kho:
Ib qho ntawm cov haujlwm tseem ceeb ntawm HEC hauv kev hloov kho rheology. Rheology yog hais txog kev kawm cov ntaub ntawv ntws tawm li cas thiab deform, thiab nws plays lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom thov thiab qhov kawg pom ntawm cov txheej txheem. HEC pab tswj cov viscosity thiab kev coj cwj pwm ntawm cov txheej tsho, ua kom tiav daim ntawv thov kom tsim nyog, theem, thiab zaj duab xis. Los ntawm kev kho cov kev xav ntawm kev ua kom haum ntawm kev tsim tawm, cov chaw tsim khoom tuaj yeem tsim kho cov khoom siv hluav taws xob kom tau raws li cov ntawv thov.
Tus neeg sawv cev tuab:
Hec pabcuam ua ib tus neeg sawv cev ua kom zoo hauv cov txheej txheem txheej txheem txheej txheem. Nws lub peev xwm los nce viscosity tso cai rau kev ncua kev ncua zoo dua ntawm cov khoom, tiv thaiv kev faib tawm thiab ua kom muaj kev faib tawm hauv cov txheej txheem. Cov cuab yeej no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov qauv muaj cov pigments, fillers, lossis lwm yam kev sib ntxiv nrog kev ua kom quav. Tsis tas li ntawd, cov tuab tuab ua ntawm HEC yuav pab txhim kho kev tsim tsa thiab kev pov hwm ntawm cov txheej, ua rau hauv cov khaub ncaws, ua kom zoo sib xws.
Stabilization:
Nyob rau hauv aqueous txheej txheem ua yeeb yam, kev ruaj khov yog qhov tseem ceeb kom tiv thaiv theem sib cais, flocculation, lossis lwm yam kev hloov pauv tsis muaj sijhawm. HEC Ua raws li lub stabilizer los ntawm kev tsim cov kev tiv thaiv kev tiv thaiv ib ncig dispersed hais, tiv thaiv lawv los ntawm agglomerating lossis setling tawm ntawm kev daws teeb meem. Qhov no ua kom muaj zog ua rau lub neej txee thiab chaw tso khoom ruaj khov ntawm cov khoom lag luam txheej, kom ua tau zoo sib xws los ntawm batch rau pob.
Zaj duab xis tsim:
Hi pab txhawb rau cov yeeb yaj kiab-ua cov khoom ntawm cov txheej txheem, ua si lub luag haujlwm ntawm kev tsim cov zaj duab xis txuas mus ntxiv thiab tsis sib xws ntawm cov nto substrate. Raws li cov txheej txheej dries, HEC lwg me me npaj lawv tus kheej los tsim lub koom haum sib txuas uas khi rau lwm cov khoom ua ke. Qhov qauv network no tau pab txhim kho Adhesion, durability, thiab kev tawm tsam rau noo noo thiab lwm yam chaw ib puag ncig. Zaj duab xis tsim los ntawm HEC tseem txhim kho cov tsos ntawm txheej, muab txoj kev du thiab ci ua tiav.
Dej khaws cia:
Txheej pleev feem ntau yauv ua kom qhuav lossis kho cov txheej txheem los ua ib zaj duab xis ruaj khov ntawm lub substrate. Thaum cov txheej txheem no, dej yaj los ntawm txheej, coj los hloov hauv viscosity thiab rheological tus cwj pwm. HEC pab kom muaj dej cia nyob rau hauv cov txheej txheej txheej txheej, prolonging lub sijhawm kom qhuav thiab tso cai rau kev ntws zoo dua thiab theem. Qhov no yog tau txais txiaj ntsig tshwj xeeb hauv cov ntawv thov uas txuas qhib lub sijhawm qhib lossis txhim kho cov xim ua haujlwm lossis cov xim pleev xim zoo nkauj lossis cov duab ci.
Kev sib haum:
HC cov khoom ua pov thawj zoo heev nrog rau ntau cov khoom xyaw sib xyaw, suav nrog cov khoom xyaw sib xyaw, suav nrog cov nyom, cov kuab tshuaj, cov xim, thiab ntxiv. Nws cov xwm tsis-ionic ua rau muaj kev sib xyaw nrog ob qho tib si cationic thiab anionic Cheebtsam, ua rau nws siv nyob rau hauv ntau daim formulations. Cov versatility no tso cai rau cov neeg ua haujlwm kom ua tiav cov yam ntxwv xav tau yam tsis muaj kev huam yuaj lossis muaj kev ruaj khov.
Kev txiav txim siab ib puag ncig thiab kev saib xyuas kev noj qab haus huv:
HEC yog suav tias yog kev nyab xeeb thiab ib puag ncig phooj ywg hauv cov txheej txheem. Nws yog muab los ntawm cov khoom siv cellule txuas ntxiv thiab tsis yog muaj kev pheej hmoo txaus ntshai thaum siv raws li qhia. Tsis tas li ntawd, HEC yog biodegradable, lub ntsiab lus nws so cia ib txwm dhau lub sijhawm tsis muaj kev sib tw nyob hauv ib puag ncig. Cov xwm txheej no ua rau nws cov kev lees paub thoob plaws thiab siv cov kev siv cov txheej txheem tsho tiv no, tshwj xeeb hauv kev lag luam uas muaj peev xwm ua ntej.
Hydroxyethyl cellulose (HEC) ua si lub luag haujlwm ntau rau cov txheej txheem, pabcuam ua kom cov rheology hloov kho, tawv nqaij tawv, zaj duab xis yav tas los, thiab dej rov qab tus neeg saib xyuas. Nws tshwj xeeb ua ke ntawm cov khoom ua rau nws muaj cov khoom siv tsis tau, xws li kev tswj hwm kev ua tiav, ruaj khov, thiab ib puag ncig compatibility. Raws li cov txheej txheem kev lag luam txuas ntxiv mus evolve, HEC yuav tsum nyob twj tseem ceeb hauv kev txhim kho cov khoom lag luam zoo thiab muaj cov khoom lag luam zoo.
Lub Sijhawm Post: Feb-18-2025