Hydroxyethyl cellulose (HEC) yog dej-soluble polymer compound tau los ntawm kev hloov tshuaj lom neeg ntawm ntuj cellulose. Nws yog dav siv rau hauv cov tsho tiv no, tshuaj txhua hnub, cov ntaub ntawv tsim tsev thiab lwm thaj teb. Ntau hom HEC feem ntau yog cais tawm ntawm cov tsis xws li qib ntawm kev hloov pauv (DS), tus kab mob hniav puas haum (ms), viscosity, thiab lwm yam.
1. Kev faib tawm los ntawm cov qib hloov chaw
Cov qib degree hloov pauv (DS) yog hais txog qhov nruab nrab tus naj npawb ntawm cov pab pawg hydroxyethyl ntawm txhua chav dej qab zib. Hloov pauv hauv DS yuav cuam tshuam rau lub solubility, viscosity thiab cov chaw thov ntawm HEC.
Qib qib qis ntawm kev hloov pauv ntawm HEC: DS yog qis dua 1.0. QIB QAUV HLOOV DUA HEC muaj cov solubility uas yuav tsum tau siv nyob rau hauv cov chaw uas xav tau ib co dej tsis kam, xws li cov ntaub ntawv hauv tsev thiab qee yam txheej txheem.
Nruab nrab Qib ntawm Kev Hloov Chaw Haujlwm HEC: DS yog nruab nrab ntawm 1.0 thiab 2.0. Qhov no hom HEC muaj cov dej ua kom zoo thiab feem ntau yog siv hauv cov khoom lag luam txhua hnub (xws li tshuaj ntxuav kom txhua hnub (xws li tshuaj ntxuav kom huv thiab tshuaj pleev ib ce), pleev xim thiab emulsions.
Qib siab ntawm kev hloov pauv ntawm HEC: DS yog saum toj 2.0. Qhov Hec no muaj ntau dua cov dej solubility thiab feem ntau yog siv hauv cov ntawv thov uas yuav tsum muaj qhov muag zoo, xws li cov tee qhov muag, txo qis hauv kev lag luam khoom noj, thiab lwm yam.
2. Kev faib tawm los ntawm cov hniav mob mower hloov chaw
Mail coloritation hloov (MS) hais txog cov pab pawg nruab nrab ntawm cov pab pawg hydroxyethyl ntawm txhua chav dej qab zib, tab sis suav nrog ntau kauj ruam ntawm cov neeg hloov pauv. Qhov siab dua MS tus nqi, qhov zoo dua cov dej solubility thiab cov lej kawg ntawm HEC feem ntau.
Tsawg tus hniav puas qis dua HEC: MS yog tsawg dua 1. Hom HEC muaj qeeb qeeb dhau los thiab yuav xav tau cov sijhawm kub siab lossis ntev dua. Nws yog qhov tsim nyog rau cov ntawv thov uas yuav tsum muaj kev sib cais lossis tso tawm kev tso tawm.
Nruab Nrab Mail Mail li cas hloov HEC: MS yog nruab nrab ntawm 1 thiab 2. Nws tau siv ntau yam kev txwv thiab yog siv siv cov tshuaj txhua hnub, thiab kev tsim kho.
Siab Mail cov qhab nia HEC: ms yog ntau dua 2. Nws muaj cov kev siv ua kom nrawm dua, xws li cov tshuaj pleev ib ce thiab npaj tshuaj kho mob.
3. Kev faib tawm los ntawm viscosity
Lub viscosity ntawm HEC yog qhov taw qhia tseem ceeb ntawm kev daws teeb meem, feem ntau raws li kev daws teeb meem (xws li kev ntsuas tus nqi (xws li shear tus nqi).
Tsis tshua muaj viscosity HEC: Lub viscosity nyob rau hauv 1% kev daws yog tsawg dua 1000 mpa a. Tsis muaj viscosity HEC yog tsim nyog rau siv raws li kev tswj hwm cov neeg sawv cev, dispersant thiab yog siv dav hauv cov khoom siv tshuaj lom txhua hnub, kev lag luam khoom noj khoom haus, thiab kev lag luam khoom noj muaj txiaj ntsig zoo.
Nruab nrab viscosity HEC: Lub viscosity nyob rau hauv 1% tov yog nruab nrab ntawm 1000 thiab 4000 mpa. Nruab nrab viscosity HEC tau dav hauv cov txheej txheem, cov nplaum, luam ntawv cov ntaub ntawv, muab cov khoom lag luam ua kom zoo dua thiab kho kom zoo.
High viscosity hac: Lub viscosity nyob rau hauv 1% kev daws teeb meem yog siab dua 4000 mpa a. Siab viscosity HEC yog tsuas yog siv los ua cov tuab thiab muaj stabilitizor, xws li high-ast txheej, thiab tej yam kev lag luam tshwj xeeb.
4. Kev faib tawm los ntawm daim ntawv foos
HEC tuaj yeem raug cais raws li nws lub cev daim ntawv, uas feem ntau cuam tshuam nws daim ntawv thov thiab tuav.
Hmoov rau HEC: Cov ntawv uas muaj, kev thauj khoom yooj yim thiab khaws cia. Siv nyob rau hauv feem ntau cov ntawv thov kev lag luam thiab txhua hnub tshuaj, nws yuav tsum tau sib xyaw rau hauv dej los ua kev daws teeb meem.
Granular Hec: Granular Hec yog yooj yim dua los lis thiab yaj tshaj hmoov hmoov hmoov, txo cov teeb meem hmoov av thiab haum rau cov khoom lag luam loj.
Kev siv HEC: Hauv qee cov ntawv thov has kawg, HEC -S yuav tau muab ncaj qha rau lub sijhawm daws teeb meem, xws li qee cov tshuaj pleev ib ce thiab cov khoom siv tshuaj.
5. Tshwj Xeeb Ua Haujlwm Hec
Tseem muaj qee qhov Hecs uas tau hloov kho cov tshuaj ntxiv lossis lub cev tau kho kom tau raws li qhov xav tau ntawm cov ntawv thov tshwj xeeb.
Crosslinked Hec: HEC cov khoom siv dej tsis taus thiab cov neeg kho tshuab tau txhim kho los ntawm cov tshuaj tua kab ke, thiab nws yog qhov haum rau lub sijhawm kom muaj zog thiab kav ntev.
Hloov kho HEC: kev hloov kho ntxiv (xws li Carboxymethylation, xws li txhim kho cov khoom siv tshuaj tua kab mob, xws li ua kom sov lossis cov nplaum.
Sib xyaw Hec: compounded nrog lwm cov ntaub ntawv tuab lossis ua haujlwm kom txhawb nqa nws cov kev ua tau zoo, xws li daim ntawv thov ntawm cov pa xaim hluav taws xob hauv cov txheej txheej.
Raws li ib qho tseem ceeb dej-soluble cov khoom siv, sib txawv ntawm cov hydroxyethyl cellulose (HEC) hloov kho cov ntawv thov hloov, puas tau hloov kho, viscosity thiab lub cev daim ntawv. To taub cov kev faib tawm no pab xaiv hec cov khoom lag luam uas haum rau hauv cov ntawv thov kev ua tau zoo thiab cov nyhuv zoo. Txawm hais tias nyob hauv cov ntaub ntawv hauv tsev txhua hnub, cov khoom siv lossis tshuaj, HEC tau dav siv rau nws cov khoom siv ua kom zoo thiab ua yeeb yaj kiab zoo nkauj thiab ua yeeb yaj kiab.
Lub Sijhawm Post: Feb-17-2025