Hydroxyethyl cellulose (HEC)yog ib qho polymer uas tsis yog ionic, yaj tau hauv dej los ntawm cov cellulose ntuj. Vim nws muaj kev nyab xeeb siab thiab ruaj khov, nws siv dav hauv kev saib xyuas tawv nqaij, kev ntxuav, thiab cov tshuaj pleev ib ce. Nws lub luag haujlwm hauv kev saib xyuas tawv nqaij tsis yog tsuas yog ua kom tuab xwb; nws kuj muaj ntau yam haujlwm, suav nrog kev txhim kho kev xav ntawm daim tawv nqaij, ua kom lub cev ruaj khov, thiab pab tsim cov zaj duab xis.
1. Cov Qauv thiab Cov Khoom
Hydroxyethyl cellulose yog ib qho cellulose derivative uas tau los ntawm cov paj rwb ntuj lossis cov ntoo pulp los ntawm cov tshuaj lom neeg xws li alkalization thiab ethylene oxide etherification. Cov hydroxyethyl substituents uas tau qhia rau hauv nws cov saw molecular txhim kho nws cov hydrophilicity, ua rau nws yaj hauv dej txias thiab dej kub los tsim cov tshuaj colloidal pob tshab lossis translucent. Nws qhov xwm txheej nonionic ua rau nws tsis tshua muaj kev cuam tshuam rau cov tshuaj lom neeg nrog cov khoom xyaw zoo lossis tsis zoo hauv cov qauv, ua rau nws ruaj khov thoob plaws ntau yam pH thiab electrolytes.
2. Lub Luag Haujlwm Tseem Ceeb hauv Kev Saib Xyuas Tawv Nqaij
2.1. Kev Tswj Xyuas Qhov Ua Kom Tuab Thiab Qhov Viscosity
HEC tuaj yeem ua rau cov khoom siv tawv nqaij viscosity ntau ntxiv, pab kom cov dej ua ke zoo li cov kua nplaum lossis cov emulsion. Thaum ntxiv rau hauv toners, serums, thiab lub ntsej muag lub ntsej muag, nws txhim kho kev nthuav dav thiab kev siv cov khoom, tiv thaiv kev ntws, thiab tso cai rau kev nthuav dav thoob plaws daim tawv nqaij.
2.2. Kev Tswj Xyuas Cov Emulsion Systems
Hauv cov roj-hauv-dej lossis cov roj-hauv-dej xws li cov tshuaj pleev thiab cov tshuaj pleev, HEC tuaj yeem qeeb cov roj-dej sib cais los ntawm kev nce qhov viscosity ntawm cov dej theem, yog li ua kom lub cev ruaj khov ntawm cov emulsion. Qhov no yog qhov tseem ceeb rau cov mis uas muaj cov khoom xyaw nquag lossis cov roj volatile.
2.3. Txhim kho qhov kev xav ntawm daim tawv nqaij thiab kev tsim cov zaj duab xis
Cov khoom siv tu tawv nqaij uas muaj HEC feem ntau ua ib daim nyias nyias, pob tshab, thiab mos mos rau ntawm daim tawv nqaij, txo cov dej ua pa thiab muab qhov zoo li mos mos, tsis nplaum. Cov yam ntxwv tsim daim zaj duab xis no tshwj xeeb tshaj yog rau kev ua kom noo noo, so, thiab tiv thaiv cov khoom.
2.4. Kev Ncua thiab Kev Sib Tshuam
Hauv cov khoom siv tawv nqaij uas muaj cov khoom tsis yaj (xws li zinc oxide, titanium dioxide, thiab hmoov hlaws), HEC tuaj yeem ncua thiab sib npaug zos cov khoom khov kho los ntawm kev nce qhov system viscosity thiab tsim cov qauv network peb-seem, tiv thaiv kev sib sau ua ke lossis clumping.
2.5. Cov Khoom Siv Me Me thiab Muaj Kev Nyab Xeeb
HEC, muab los ntawm cov cellulose ntuj, tsis ua rau khaus thiab tsis ua rau khaus, ua raws li ntau txoj cai kev nyab xeeb thoob ntiaj teb. Nws tsis muaj cov surfactants nquag thiab tsis cuam tshuam rau daim tawv nqaij, ua rau nws feem ntau siv rau hauv cov khoom siv saib xyuas tawv nqaij rau cov tawv nqaij rhiab heev lossis cov menyuam mos.
3. Piv txwv ntawm daim ntawv thov hauv ntau yam khoom siv tu tawv nqaij
Cov Tshuaj Pleev Kom Mos: Cov tshuaj HEC tsawg tsawg (0.2% -0.5%) ua rau cov kua dej ntws zoo dua thiab siv tau zoo dua, thaum tseem ua kom cov tshuaj pleev kom mos xws li hyaluronic acid thiab glycerin nyob hauv lub cev ruaj khov.
Tshuaj pleev thiab tshuaj pleev: Kev siv tsawg dua 1% tuaj yeem txhim kho qhov ruaj khov ntawm lub cev emulsion, ua rau cov nplaum du thiab mos.
Cov Npog Ncauj thiab Cov Gels: HEC muab cov qauv pob tshab, zoo li gel thiab pab tso cov khoom xyaw nquag sib npaug. Tshuaj pleev thaiv hnub: Ua haujlwm ua tus neeg sawv cev thiab pab tsim zaj duab xis, pab faib cov hmoov tshuaj pleev thaiv hnub sib npaug thiab txhim kho qhov sib npaug thiab kev tiv thaiv dej ntawm zaj duab xis tiv thaiv.
4. Cov txiaj ntsig ntawm daim ntawv thov
Kev Sib Tw Zoo Tshaj Plaws: Sib xws nrog feem ntau cov khoom xyaw nquag ntawm daim tawv nqaij, cov tshuaj pleev ib ce, cov tshuaj tiv thaiv, thiab ntau ntxiv.
Kev Ruaj Ntseg Muaj Zog: Ruaj khov nyob rau hauv pH ntau ntawm 3-11 thiab tsis cuam tshuam los ntawm feem ntau electrolytes.
Muaj Kev Nyab Xeeb thiab Ib puag ncig zoo: Biodegradable, ua raws li cov ntsiab cai ntsuab formulation.
Kev Ua Haujlwm Yooj Yim: Ob qho tib si yaj tau txias thiab yaj tau kub, tsim nyog rau ntau yam txheej txheem tsim khoom.
Tus nqi ntawm HEC hauv kev saib xyuas tawv nqaijTsis yog tsuas yog nws txoj kev ua haujlwm zoo li cov khoom siv ua kom tuab thiab mos xwb, tab sis kuj tseem muaj peev xwm txhim kho cov khoom siv tag nrho, txuas lub neej txee, thiab txhim kho kev paub ntawm daim tawv nqaij ntawm tus neeg siv. Txawm hais tias nyob rau hauv kev saib xyuas tawv nqaij txhua hnub, kev saib xyuas tawv nqaij ua haujlwm, cov tshuaj pleev xim, lossis tshuaj pleev thaiv hnub, HEC ua haujlwm ua cov khoom xyaw tseem ceeb hauv cov qauv ruaj khov thiab muaj kev nyab xeeb, muab kev txhawb nqa zoo rau kev ua haujlwm ntawm cov khoom kawg.
Lub sijhawm tshaj tawm: Lub Yim Hli-14-2025