Selulose ea Hydroxyethyl (HEC)ke ether e sa qhibiliheng metsing e seng ea ionic cellulose, e sebelisoang haholo ho penteng, thepa ea kaho, meriana, lik'hemik'hale tsa letsatsi le letsatsi le masimong a mang. Leha ho le joalo, HEC e na le ho qhibiliha ho hoholo ha metsi le ho se tšabe metsi hantle, e leng se ka lebisang mefokolong ea ts'ebetso maemong a mang a ts'ebeliso. Ka hona, hydroxyethyl cellulose e fetotsoeng ka hydrophobically (HMHEC) e bile teng ho ntlafatsa thepa ea eona ea rheological, bokhoni ba ho teteana, botsitso ba emulsification le ho hanyetsa metsi.
1. Bohlokoa ba phetoho ea hydroxyethyl cellulose e sa hlokeng metsi
Ho ntlafatsa thepa ea ho teteana le thepa ea rheological
Phetoho ea hydrophobic e ka ntlafatsa haholo bokhoni ba ho teteana ba HEC, haholo-holo ka sekhahla se tlase sa ho kuta. E bontša viscosity e phahameng, e thusang ho ntlafatsa thixotropy le pseudoplasticity ea sistimi. Thepa ena e bohlokoa haholo masimong a ho koahela, maro a ho cheka oli, lihlahisoa tsa tlhokomelo ea motho ka mong, jj., 'me e ka ntlafatsa botsitso le phello ea ts'ebeliso ea sehlahisoa.
Ntlafatsa botsitso ba emulsion
Kaha HEC e fetotsoeng e ka theha sebopeho se kopaneng ka har'a tharollo ea metsi, e ntlafatsa botsitso ba emulsion haholo, e ka fokotsa karohano ea oli le metsi, 'me ea ntlafatsa phello ea emulsification. Ka hona, e na le bohlokoa bo boholo ba ts'ebeliso masimong a lipente tsa emulsion, lihlahisoa tsa tlhokomelo ea letlalo le li-emulsifier tsa lijo.
Ntlafatsa ho hanyetsa metsi le thepa ea ho etsa filimi
HEC ea setso e rata metsi haholo 'me e qhibiliha habonolo libakeng tse mongobo o phahameng kapa metsing, e leng se amang ho hanyetsa metsi ha thepa. Ka phetoho ea ho tšaba metsi, ts'ebeliso ea eona ho lipente, likhomaretsi, ho etsa pampiri le masimo a mang e ka ntlafatsoa, 'me ho hanyetsa metsi le thepa ea ho etsa filimi ho ka ntlafatsoa.
Ntlafatsa thepa ea ho fokotsa ho kuta ha moriri
HEC e fetotsweng ka hydrophobic e ka fokotsa ho teteana tlasa maemo a ho tjhesa haholo, ha ka nako e ts'oanang e boloka botsitso bo phahameng ka sekgahla se tlase sa ho tjhesa, ka hona e ntlafatsa tshebetso ya kaho le ho fokotsa tshebediso ya eneji. E na le bohlokwa ba bohlokwa diindastering tse kang merafo ya oli le dikobo tsa meralo.
2. Phetoho ea hydroxyethyl cellulose e sa hlokeng metsi
Phetoho ea HEC e sa hlokeng metsi hangata e finyelloa ka ho hlahisa lihlopha tse sa hlokeng metsi ho lokisa ho qhibiliha ha eona le thepa ea ho e teteanya ka ho e kopanya ka lik'hemik'hale kapa phetoho ea 'mele. Mekhoa e tloaelehileng ea phetoho ea ho sa hlokeng metsi ke e latelang:
Ho kenya sehlopha se tšabang metsi
Ho hlahisa alkyl (e kang hexadecyl), aryl (e kang phenyl), siloxane kapa lihlopha tse nang le fluorine molek'huleng ea HEC ka karabelo ea lik'hemik'hale ho ntlafatsa ho se kenelle ha metsi. Mohlala:
Ho sebedisa karabelo ya esterification kapa etherification ho alkyl e telele ya graft, jwalo ka hexadecyl kapa octyl, ho theha sebopeho se amanang le hydrophobic.
Ho hlahisa lihlopha tsa silicone ka phetoho ea siloxane ho ntlafatsa ho hanyetsa ha eona metsi le ho tlotsa.
Ho sebedisa phetoho ya fluorination ho ntlafatsa ho hanyetsa boemo ba lehodimo le ho se tshabe metsi, e leng se etsang hore e lokele ho kwahelwa ka maemo a hodimo kapa ditshebediso tse ikgethang tsa tikoloho.
Phetoho ea Copolymerization kapa cross-linking
Ka ho hlahisa di-comonomers (tse kang di-acrylate) kapa di-agent tse hokahanyang (tse kang di-epoxy resins) ho theha marangrang a hokahanyang, khanyetso ya metsi le bokgoni ba ho teteana ba HEC di a ntlafala. Mohlala, ho sebedisa HEC e fetotsweng ka hydrophobically ho di-emulsion tsa polymer ho ka ntlafatsa botsitso le phello ya ho teteana ha emulsion.
Phetoho ea 'mele
Ka ho sebelisa theknoloji ea ho monya metsi holim'a metsi kapa ea ho koahela, limolek'hule tse sa rateng metsi li koahetsoe holim'a HEC ho etsa mofuta o itseng oa ho sa rateng metsi. Mokhoa ona o bonolo haholo 'me o loketse lits'ebetso tse nang le litlhoko tse phahameng tsa botsitso ba lik'hemik'hale, joalo ka lijo le meriana.
Phetoho ea kamano ea ho tšaba metsi
Ka ho hlahisa sehlopha se senyenyane sa lihlopha tse sa hlokeng metsi ho molek'hule ea HEC, e theha motsoako o kopanetsoeng ka har'a tharollo ea metsi, ka hona e ntlafatsa bokhoni ba ho teteana. Mokhoa ona o sebelisoa haholo nts'etsopele ea li-thickeners tse sebetsang hantle 'me o loketse ho koaheloa, lik'hemik'hale tsa oli le masimo a mang.
Phetoho ea ho tšaba metsihydroxyethyl celluloseke mokhoa oa bohlokoa oa ho ntlafatsa ts'ebetso ea ts'ebeliso ea eona, e ka ntlafatsang bokhoni ba eona ba ho teteana, botsitso ba emulsification, khanyetso ea metsi le thepa ea rheological. Mekhoa e tloaelehileng ea phetoho e kenyelletsa ho kenngoa ha sehlopha sa hydrophobic, phetoho ea copolymerization kapa cross-linking, phetoho ea 'mele le phetoho ea kamano ea hydrophobic. Khetho e utloahalang ea mekhoa ea phetoho e ka ntlafatsa ts'ebetso ea HEC ho latela litlhoko tse fapaneng tsa ts'ebeliso, e le ho bapala karolo e kholo masimong a mangata joalo ka lipente tsa meralo, lik'hemik'hale tsa oli, tlhokomelo ea botho le bongaka.
Nako ea poso: Hlakubele-25-2025