Cellulose ether e ka ntlafatsa haholo ts'ebetso ea seretse se metsi, 'me ke tlatsetso e kholo e amang ts'ebetso ea kaho ea seretse. Khetho e utloahalang ea li-cellulose ethers tsa mefuta e sa tšoaneng, li-viscosities tse fapaneng, boholo bo fapaneng ba likaroloana, likhato tse fapaneng tsa viscosity le chelete e eketsehileng e tla ba le phello e ntle ntlafatsong ea ts'ebetso ea seretse se omeletseng sa phofo.
Ho boetse ho na le kamano e ntle pakeng tsa ho lumellana ha pente ea samente le tekanyo ea cellulose ether. Cellulose ether e ka eketsa viscosity ea seretse haholo. Ha tekanyo e le kholoanyane, phello e totobetse haholoanyane. High-viscosity cellulose ether aqueous solution e na le thixotropy e phahameng, eo hape e leng tšobotsi e kholo ea cellulose ether.
Phello e matla e itšetlehile ka tekanyo ea polymerization ea cellulose ether, mahloriso a tharollo, sekhahla sa ho kuta, mocheso le maemo a mang. Thepa ea gelling ea tharollo e ikhethile ho alkyl cellulose le li-derivatives tsa eona tse fetotsoeng. Thepa ea gelation e amana le tekanyo ea ho fetola, mahloriso a tharollo le li-additives. Bakeng sa li-derivatives tse fetotsoeng tsa hydroxyalkyl, thepa ea gel e boetse e amana le boemo ba phetoho ea hydroxyalkyl. 10% -15% tharollo e ka lokisoa bakeng sa MC le HPMC, 5% -10% tharollo e ka lokisoa bakeng sa MC le HPMC, 'me 2% -3% tharollo e ka lokisoa feela bakeng sa MC e phahameng ea viscosity. le HPMC. Hangata, sehlopha sa viscosity sa cellulose ether se boetse se hlophisoa ka tharollo ea 1% -2%.
Ether ea cellulose e boima ba molek'hule e na le ts'ebetso e phahameng ea ho tenya. Li-polymers tse nang le boima bo fapaneng ba limolek'hule li na le li-viscosity tse fapaneng ka tharollo e tšoanang ea mahloriso. Tekanyo e phahameng. Sepheo sa viscosity se ka finyelloa feela ka ho eketsa palo e kholo ea boima bo tlaase ba molek'hule cellulose ether. Viscosity ea eona ha e itšetlehe haholo ka sekhahla sa ho kuta, 'me viscosity e phahameng e fihla ho viscosity e reriloeng,' me palo e hlokahalang ea tlatsetso e nyane, 'me viscosity e ipapisitse le katleho e kholo. Ka hona, ho finyella ts'ebetso e itseng, palo e itseng ea cellulose ether (ho tsepamisa maikutlo ho tharollo) le viscosity ea tharollo e tlameha ho tiisetsoa. Mocheso oa mocheso oa gel oa tharollo o boetse o fokotseha ka mokhoa o ts'oanang le ho eketseha ha motsoako oa tharollo, le li-gel ka mocheso oa motsoako ka mor'a hore li fihle boemong bo itseng. Motsoako oa gelling oa HPMC o batla o phahame mocheso oa kamore.
Nako ea poso: Mar-08-2023