Daim ntawv thov ntawm hydroxyethyl cellulose (HEC) nyob rau hauv cov txheej txheej kev lag luam

1. Pib

Hydroxyethyl cellulose (HEC) yog cov cellulose cellulose ether tau los ntawm kev rov kho cov tshuaj lom neeg nrog ethylene oxide tom qab kho ethylene. HEC tau siv dav nyob rau hauv cov txheej txheem kev lag luam vim nws lub cev nqaij daim tawv thiab tshuaj lom neeg, xws li cov dej solubility siab, zoo viscosity zuj zus peev muaj peev xwm thiab cov dej num nto.

2. Cov yam ntxwv yooj yim ntawm HEC

HEC muaj cov yam ntxwv tshwm sim tseem ceeb, ua rau nws tseem ceeb ntxiv rau hauv kev lag luam pleev xim:
Dej solubility: HEC tuaj yeem rhuav tshem hauv dej txias kom tsim cov tshuaj ntshiab lossis microoemulsion daws tau cov viscosity ntawm txheej.
Thickening nyhuv: HEC muaj cov khoom siv thicking zoo heev thiab tuaj yeem nce cov tshuaj ntawm cov kev ua kom muaj zog, yog li kev txhim kho lub zog ua haujlwm thiab cov yeeb yaj kiab ntawm txheej.
Ncua kev ruaj khov: Hec tuaj yeem siv cov kev tshem tawm hauv lub plab thiab muab tso rau hauv cov xim, yog li kev txhim kho cov kev sib txuam thiab kev ruaj ntseg ntawm txheej.
Thixotrostropy: HEC muab cov txheej txheej zoo thixotropy, uas yog, raws li txheej txheem txo qis, uas yooj yim rau kev tsim kho; Thaum lub zog shear tau tawm, txheej txheej ceev ceev rov qab nws cov viscosity qub, txo sagging thiab splashing.
Cov nyhuv ntawm cov nyhuv colid: HEC tuaj yeem sau cov coloids tiv thaiv kom tiv thaiv kom tsis txhob flocculation ntawm latex polymers thiab txhim kho qhov ruaj khov thiab txhim kho qhov ruaj khov ntawm txheej.

3. Cov ntawv thov tshwj xeeb ntawm HEC hauv cov txheej txheem txheej txheem

3.1 cov xim looj xim looj

Daim ntawv thov ntawm HEC nyob rau hauv looj cov xim yog feem ntau yog xav hauv cov thickeners, stabilizers thiab dej khaws cia:

Thickener: HEC muaj peev xwm nce cov xim viscosity ntawm looj xim, li kev txhim kho cov kua dej thiab kev tsim kho cov xim. Los ntawm kev kho cov kev xav ntawm HEC, qhov tsim nyog viscosity yuav tsum rau cov kev ua haujlwm sib txawv (xws li txhuam hniav, thiab txau) tuaj yeem tau txais.
Stabilizer: HEC muaj peev xwm tiv thaiv cov sedimentation ntawm pigments thiab fillers nyob rau hauv looj cov xim tsev, thiab txhim kho cov kev sib txuam thiab kev ruaj ntseg ntawm cov xim.
Dej-tuav tus neeg sawv cev: HEC muaj cov dej noo zoo khaws cia. Thaum lub sij hawm tsim kho cov dej ua haujlwm, nws tuaj yeem tiv thaiv cov xim ntawm cov xim saum npoo av los ntawm kev ua yeeb yaj kiab sai dhau, yog li kev ua yeeb yaj kiab pleev xim thiab ruaj khov ntawm cov xim pleev xim.

3.2 Cov xim ntoo ntoo

Hauv cov dej ntoo raws li cov ntoo, HEC feem ntau yog siv los ua tus neeg sawv cev theem thiab SAG tswj tus neeg sawv cev:

Tus neeg saib xyuas theem qib siab: HEC muab cov xim ntoo zoo li qub ua kom zoo nkauj, uas pab ua kom cov xim ntoo zoo nkauj thaum co cov ntoo saum npoo av, txo cov kab thiab cov txiv kab ntxwv tev.

Sag Control: los ntawm kev txhim kho lub thixotrotropy ntawm cov av ntoo, HEC tuaj yeem tswj cov xim av ntawm cov xim ntsug, txhim kho kev tsim kho thiab xim ua yeeb yaj kiab zoo.

3.3 Txuj Ci Txheej Txheem

Hauv cov cuab yeej kos duab (xws li sab nrauv phab ntsa tsho tshaj sab thiab sab hauv lub luag haujlwm tseem ceeb li cov ntaub ntawv tuab, dispersant thiab zaj duab xis-ua kev pab:

Thickener: HEC nce cov viscosity ntawm cov cuab yeej ua yeeb yam, ua rau nws muaj cov khoom tsim kho zoo thaum lub sijhawm tsim kho, tsis quav dej, thiab ua kom muaj zog thiab ua kom nruj ntawm cov txheej.
Dispersant: HEC tuaj yeem rhuav tshem cov xim xim, tiv thaiv lawv los ntawm agglomerating thiab setling, thiab txhim kho cov dispersion thiab kev sib xyaw ntawm cov txheej.
Cov yeeb yaj kiab ua yeeb yam: HEC tuaj yeem txhim kho cov khoom ua yeeb yaj kiab ntawm cov txheej txheem pleev xim rau, thiab txhim kho cov duab pleev xim thiab ruaj khov ntawm cov xim pleev xim.

3.4 Txheej Txheem Tshwj Xeeb

Hauv qee lub tsho tshwj xeeb tshwj xeeb (xws li tiv thaiv kab mob corrosion, thiab cov tshuaj tua hluav taws xob ua kom zoo nkauj, thiab thermal rwb thaiv tsev ua haujlwm, ruaj khov, thiab rheology tswj cov haujlwm:

Anti-corrosion Txheej txheem: HEC txhim kho lub viscosity thiab muab ncua kev ruaj ntseg ntawm cov txheej txheem corrosion, uas pab rau txheej fayly thiab ua ib txheej tiv thaiv tuab.
Hluav taws kub-retardant txheej: lub hom phiaj viscosity thiab cov yeeb yaj kiab-ua cov txheej txheem hluav taws kub ntawm cov kub thiab txhim kho hluav taws kub.
Thermal Rwb Thaiv Tsev Cov Txheej Txheem: HEC muab thermal rwb thaiv tsev cov kev ruaj khov thiab kev ua haujlwm tau yooj yim thaum lub sijhawm txheej txheem txheej txheej thiab txhim kho cov nyhuv thermal rwb thaiv tsev.

4. HEC xaiv thiab siv kev ceev faj

Thaum xaiv thiab siv HEC, cov ntsiab lus hauv qab no yuav tsum tau sau tseg:

Viscosive Xaiv: Xaiv qhov tsim nyog hac viscosity qib raws li cov tshuab sib txawv. Piv txwv li, cov siab-viscosity HEC yog qhov tsim nyog rau cov ntsiab lus zoo lossis cov txiaj ntsig siab zoo, thaum cov xim qis, thaum cov xim qis dua yog cov ntsiab lus tseem ceeb lossis cov viscosity qis.
Ib qho ntxiv txoj kev: txhawm rau zam dhau qhov kev tsim cov lumps thaum HEC yog saws hauv cov chav me me thiab lub sijhawm ntsuas kub tau nce thiab lub sijhawm txuas ntxiv thaum lub sij hawm sib cais.
Kev sib txuam: Thaum HEC tau tshaj lwm tus ntxiv (xws li Dispersive thiab Defoamers yuav tsum tau them rau lawv cov teeb meem tsis txhob muaj teeb meem thiab cuam tshuam rau kev ua tau zoo ntawm txheej.

5. Yav Tom Ntej Kev Loj Hlob

Nrog kev txhim kho txuas ntxiv ntawm cov txheej kev lag luam, qhov yuav tsum ua rau txheej ua kom tiav ib hnub dhau ib hnub. Raws li kev ua haujlwm tseem ceeb ntxiv, HEC muaj qhov dav thov cov kev cia siab. Yav tom ntej, daim ntawv thov ntawm Hec nyob rau hauv cov txheej txheej tuaj yeem tsim kho hauv cov lus qhia hauv qab no:

Kev tiv thaiv ntsuab thiab ib puag ncig: Tsim cov khoom lag luam qis, cov tshuaj hnyav kom tau txais kev tiv thaiv ib puag ncig thiab kev lag luam xav tau.
Kev hloov kho ua haujlwm: los ntawm kev hloov kho tshuaj lom neeg lossis kev hloov kho lub cev, xws li cov tshuaj tiv thaiv kab mob, kev tiv thaiv, ntxuav tus kheej, thiab lwm yam.
Kev ua tau zoo cov txheej txheem: Tsim cov khoom siv hec tsim rau kev ua tau zoo ntawm cov teb uas tsim nyog nyob rau hauv kev tsim kho ntawm kev tsim kho, tsheb, nkoj, thiab lwm yam.
Hydroxyethyl cellulose (HEC), raws li kev sib txuam ua ke ntxiv, ua lub luag haujlwm tseem ceeb hauv kev lag luam txheej. Nws cov zoo heev thickening, ncua kev ncua, kev tiv thaiv kab mob colloid thiab tiv thaiv cov ntoo, cov txheej txheem ntoo thiab cov tsho tiv no tshwj xeeb. Nrog kev txhim kho kev lag luam txuas ntxiv ntawm kev lag luam txheej txheej, daim ntawv thov kev cia siab ntawm HEC yuav yog dav. Yav tom ntej, los ntawm kev txhim kho cov kev ua haujlwm ib puag ncig thiab cov yam ntxwv ua haujlwm ntawm HEC, nws cov ntawv thov tus nqi hauv cov txheej txheej yuav ua kom zoo dua.