Abstract:
Xyoo tsis ntev los no, cov dej pleev dej tau txais kev saib xyuas dav vim lawv ib puag ncig kev phooj ywg thiab cov lus sib xyaw tsis tshua muaj organic (voc) cov ntsiab lus. Hydroxyethylulose (HEC) yog siv dej-soluble polymer nyob rau hauv cov formulations, kev pab ua cov tuab kom muaj vencosity thiab tswj cov rhelology.
Qhia:
1.1 Tom Qab:
Cov txheej txheem dej ua ke tau dhau los ua cov kev hloov kho ib puag ncig rau cov teeb meem ib txwm muaj kev cuam tshuam nrog cov teeb meem volatile, daws teeb meem cov orgissions thiab ib puag ncig cuam tshuam. Hydroxyethylulose (HEC) yog ib qho tseem ceeb ntawm cellulative uas yog cov khoom siv tseem ceeb hauv kev tsim cov dej txheej txheem dej thiab muab rheology tswj thiab ruaj khov.
1.2 lub hom phiaj:
Kab lus no ua rau Elubility cov yam ntxwv ntawm HEC hauv cov dej pleev dej thiab kev kawm txog ntau yam ntawm nws cov viscosity. Nkag siab cov kab ke no tseem ceeb rau kev ua kom zoo thiab ua tiav kev ua tau zoo.
Hydroxyethylcellulose (HEC):
2.1 qauv thiab kev ua tau zoo:
HEC yog lub cellulose derivative tau los ntawm lub etherification tshuaj tiv thaiv ntawm cellulose thiab ethylene oxide. Kev qhia txog cov pab pawg hydroxyethyl mus rau hauv lub cellulose tus caj qaum pab rau nws cov dej solubility thiab ua rau nws muaj txiaj ntsig zoo polymer hauv cov dej-raws li cov tshuab. Cov qauv molecular thiab cov yam ntxwv ntawm HEC yuav tau tham txog cov kev nthuav dav.
Solubility ntawm HEC hauv dej:
3.1 yam cuam tshuam rau solubility:
Lub solubility ntawm HEC hauv dej cuam tshuam los ntawm ntau yam, suav nrog qhov kub thiab txias, pH, confentration. Cov xwm txheej no thiab lawv qhov kev cuam tshuam rau HECUBILANILANY yuav tau tham, muab kev pom rau cov xwm txheej uas nyiam HEC sib txawv.
3.2 solubility txwv:
Nkag siab txog sab sauv thiab qis dua solubility txwv ntawm Hec hauv dej yog qhov tseem ceeb los tsim cov txheej txheej nrog kev ua tau zoo tshaj plaws. Seem no yuav delve ntau npaum li cas ntau yam uas HC Cov Khoom Taw Qhia Kev Ua Haujlwm Hec no thiab lub txim ntawm kev txwv no.
Txhim khu viscosity nrog HEC:
4.1 Lub Luag Hauj Lwm Ntawm Hec Hauv Viscosity:
Hec yog siv los ua cov tuab hauv cov dej ua haujlwm kom pab ua kom viscosity thiab txhim kho rheological tus cwj pwm. Cov txheej txheem uas HEC ua tiav Viscosity tswj kev tswj hwm, hais txog nws kev sib cuam tshuam nrog dej lwg me me thiab lwm yam khoom xyaw hauv txheej txheej txheej txheej.
4.2 Cov nyhuv ntawm cov mis sib txawv ntawm viscosity:
Ntau hom kev sib txawv sib txawv, suav nrog kev ntxhibrel, ntsuas kub, thiab cov kab mob shear, tuaj yeem cuam tshuam ntau yam ntawm cov powered ntawm dej. Seem no yuav tshawb xyuas qhov cuam tshuam ntawm cov hloov pauv no ntawm kev sib txawv ntawm kev sib txawv ntawm kev pom ntawm cov txheej txheem rau cov tswv yim.
Cov ntawv thov thiab yav tom ntej cov zeem muag:
5.1 Kev Siv Daim Ntawv Thov:
HEC tau dav siv hauv ntau cov ntawv thov xws li cov xim av, cov nplaum thiab cov xov xwm. Seem no qhia txog qhov kev txhawb nqa tshwj xeeb ntawm HEC mus rau DireBorne txheej hauv cov ntawv thov no thiab sib tham txog nws cov txiaj ntsig tag nrho cov kev sib txawv.
5.2 Yav Yav Tom Ntej Cov Lus Qhia:
Raws li qhov kev thov rau kev ua kom muaj kev ruaj ntseg thiab kev ua tau zoo tshaj plaws ntxiv kom loj hlob, cov lus qhia kev tshawb fawb yav tom ntej, kev tshawb fawb yav tom ntej. Qhov no yuav suav nrog kev nrhav kev nrhav hauv HCC hloov kho, cov txheej txheem tshiab tshaj plaws.
Hauv kev xaus:
Summarizing lub ntsiab kev tshawb pom, ntu no yuav nthuav tawm qhov tseem ceeb ntawm solubility thiab viscosity tswj nyob rau hauv cov dej tiv thaiv kev siv HEC. Kab lus no yuav xaus nrog cov tswv yim cuam tshuam rau cov tswv yim thiab cov lus pom zoo rau kev tshawb nrhiav kev nkag siab ntawm HEC hauv cov dej ntawm cov dej.
Lub Sijhawm Post: Dec-05-2023