Hydroxyethyl cellulose (HEC) yog cov tuab dua, stabilizer, nplaum thiab zaj duab xis yav dhau los siv hauv kev lag luam thiab khoom siv txhua hnub. Nws yog dav siv rau hauv cov txheej txheem, xim av, tshuaj pleev ib ce, tshuaj ntxuav tshuaj, khoom noj, cov chaw muag tshuaj thiab lwm thaj teb. Rau cov txiaj ntsig zoo tshaj plaws, qhov tseeb siv piv yog qhov tseem ceeb heev. Txawm li cas los xij, qhov kev piv no tsis tau tsau thiab sib txawv nyob ntawm ntau yam xws li kev thov hom kev xaiv, xav tau viscosity, lwm yam khoom xyaw hauv cov mis, thiab lwm yam.
1. Kev ntsuas kev sib piv ua cov txheej txheem thiab xim av
Nyob rau hauv cov txheej xim thiab cov xim tha xim, hydroxyethyl cellulose feem ntau yog siv los ua cov tuab thiab ncua tus neeg sawv cev. Nws cov kev siv piv feem ntau yog nruab nrab ntawm 0.2% thiab 2.5%. Rau cov dej pleev dej xws li cov xim looj kua yas, cov kev pab raug ntawm HEC yog ntawm 0.3% thiab 1.0%. Cov kev sib piv siab dua feem ntau yog siv hauv cov khoom lag luam uas yuav tsum viscosity thiab zoo dua fluamonity, xws li cov xim tuab thiab cov xim tuab heev thiab cov xim zoo nkauj. Thaum siv, them sai sai rau qhov kev txiav txim ntawm kev ntxiv thiab nplawm cov kev mob kom tsis txhob muaj cov kab mob lumps lossis cuam tshuam rau kev ua tau zoo ntawm cov xim pleev xim.
2. Kev Siv Txoj Cai Hauv Tshuaj Pleev
Hauv cov tshuaj pleev ib ce, HEC feem ntau yog siv los ua cov tuab dua, stabilizer thiab zaj duab xis yav tas los. Nws cov kev siv piv yog feem ntau ntawm 0.1% thiab 1.0%. Rau cov khoom lag luam xws li lotions thiab cream, 0.1% rau 0.5% yog txaus los muab cov qauv zoo thiab ruaj khov. Hauv pob tshab gels thiab txias, cov piv yuav nce 0.5% rau 1.0%. Vim nws cov biocompatibility thiab kev txob txob qis, HEC tau dav siv hauv cov tshuaj pleev ib ce.
3. Kev siv kev txheeb xyuas hauv xab npum
Hauv tsev neeg thiab kev tsim cov tshuaj ntxuav tsev, hydroxyethyl cellulose yog siv los kho cov viscosity ntawm cov khoom thiab siv zog tshem tawm cov khib nyiab. Cov kev siv tau siv tau yog 0.2% mus rau 0.5%. Txij li thaum HEC tuaj yeem ua kom cov txheej txheem viscosity ntawm qhov kev pom zoo, nws siv hauv cov xab npum yog qhov me me. Nyob rau tib lub sijhawm, nws kuj tseem tuaj yeem pab tswj cov dispersed system thiab tiv thaiv cov khoom xyaw nquag los ntawm kev sib txuas, yog li kev txhim kho cov khoom tu ntawm cov khoom.
4. Kev siv kev sib piv hauv cov zaub mov thiab cov tshuaj
Hauv kev lag luam khoom noj khoom haus, kev siv ntawm kev txwv tsis pub muaj cov khoom noj yog qhov tsis muaj zaub mov ntxiv, feem ntau ntawm 0.01% thiab 0.5%. Nws yog feem ntau siv nyob rau hauv cov khoom qab zib khov, cov khoom noj mis nyuj, cov kua thiab lwm cov khoom kom txhim kho saj thiab ruaj khov. Hauv cov chaw muag tshuaj, HEC yog siv los ua cov txheej txheem, cov neeg sawv cev tsis txaus siab thiab cov tshuaj siv feem ntau yog nruab nrab ntawm 0.5% thiab 2.0%, nyob ntawm seb hom phiaj npaj thiab cov khoom yuav tsum tau ua.
5. Kev siv piv rau hauv kev kho dej
Hauv kev kho dej, HEC yog siv los ua cov flocculant thiab cov tuab tuab, thiab siv tau feem ntau ntawm 0.1% thiab 0.3%. Nws tuaj yeem txhim kho Flocculation hauv cov txheej txheem kev kho dej, tshwj xeeb tshaj yog nyob rau hauv kev kho mob ntawm qhov dej siab turbidity. Kev txiav tawm qis ntawm HEC tuaj yeem ua cov txiaj ntsig tseem ceeb thiab tsis tau siv rau theem ob. Nws yog ib puag ncig tus neeg saib xyuas dej.
6. Kev ceev faj rau kev siv
Thaum siv hydroxyethyl cellulose, ntxiv rau xaiv xaiv qhov tsim nyog, txoj kev sib cais thiab lub sijhawm yuav tsum tau txiav txim siab. Hec feem ntau yuav tsum tau maj mam ntxiv rau dej ntawm tsawg kub thiab nplawm tsis tu ncua kom txog thaum nws tau yaj tag tsis txhob agglomeration. Lub viscosity ntawm kev daws teeb meem yuav maj mam nce sijhawm, yog li cov tshuaj pleev yog tias lub viscosity ntawm daim ntawv thov zaum kawg kom pom tias nws ua tau raws li qhov yuav tsum tau ua.
Qhov kev faib ua feem ntawm hydroxyethyl cellulose txawv nyob ntawm daim ntawv thov teb thiab siv tshwj xeeb. Feem ntau hais lus, cov feem sib piv los ntawm 0.01% rau 2.5%, thiab nws yog dav siv nyob rau hauv ntau daim teb, tshuaj pleev ib ce, khoom noj khoom haus thiab kev kho dej. Txhawm rau kom ua tiav cov nyhuv zoo tshaj plaws, nws raug nquahu kom txiav txim siab cov feem ntau raws li kev kuaj me me thiab sijhawm ua kom ntseeg tau tias qhov kev ruaj ntseg thiab kev ua tau zoo ntawm cov khoom.
Lub Sijhawm Post: Feb-17-2025