hlahisa:
Li-ether tsa cellulose li sebelisoa haholo indastering ea kaho ka lebaka la bokhoni ba tsona bo botle ba ho boloka metsi, ho teteana le ho kopanya. Li ntlafatsa phallo le ho sebetsa ha thepa e thehiloeng samenteng le ho ntlafatsa litšobotsi tsa mechini tsa sehlahisoa sa ho qetela. Li-putty li sebelisoa hangata indastering ea kaho ho tlatsa mapetso, masoba le liphoso tse ling maboteng le siling. Tšebeliso ea li-ether tsa cellulose ka har'a phofo ea putty e ka ntlafatsa bokhoni ba ho sebetsa, ho beha nako le boleng ka kakaretso ba sehlahisoa. Sengoloa sena se tla tšohla phello ea viscosities e fapaneng ea li-ether tsa cellulose holim'a phofo ea putty.
Mefuta ea li-ether tsa cellulose:
Ho na le mefuta e fapaneng ea li-ether tsa cellulose ho kenyeletsoa methylcellulose (MC), hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC) le carboxymethylcellulose (CMC). HPMC ke ether ea cellulose e tsebahalang indastering ea kaho ka lebaka la thepa ea eona e ntle ea ho boloka metsi, ho a tiisa le ho a khomarela. HPMC e tla ka mahlakore a fapaneng, ho tloha tlase ho ea holimo.
Tšusumetso ea ether ea cellulose holim'a phofo ea putty:
Phofo ea putty e sebelisetsoa ho tlatsa mapetsong, masoba le liphoso tse ling maboteng le siling. Tšebeliso ea li-ether tsa cellulose ka har'a phofo ea putty e ka ntlafatsa bokhoni ba ho sebetsa le nako ea ho beha sehlahisoa. Cellulose ether e ka boela ea ntlafatsa bokhoni ba ho sebetsa le ho khomarela phofo ea putty. Se latelang ke phello ea viscosities e fapaneng ea li-ether tsa cellulose holim'a phofo ea putty:
1. HPMC e tiileng haholo:
Ho ba le viscosity e tlase HPMC e ka ntlafatsa ho phalla le ho sebetsa ha phofo ea putty. E boetse e ntlafatsa nako ea ho beha sehlahisoa. Ho ba le viscosity e tlase HPMC e na le mocheso o tlase oa gelation, o ka thibelang phofo ea putty ho tiea kapele haholo. E ka boela ea ntlafatsa ho khomarela le ho kopana ha sehlahisoa. Ho ba le viscosity e tlase HPMC e loketse phofo ea putty e hlokang ho sebetsa hantle le ho boreleli.
2. HPMC e tiileng haholo:
HPMC e nang le viscosity e mahareng e ka ntlafatsa thepa ea thixotropic ea phofo ea putty. E ka boela ea ntlafatsa ts'ebetso ea ho boloka metsi le ho kopanya sehlahisoa. HPMC e nang le viscosity e mahareng e ka ntlafatsa thepa ea mechini ea sehlahisoa, joalo ka matla le ho tšoarella. E loketse phofo ea putty e hlokang ho boloka metsi hantle le ho kopana hantle.
3. HPMC e tiileng haholo:
HPMC e nang le viscosity e phahameng e ka ntlafatsa ho teteana le tshebetso ya ho thibela ho thella ha phofo ya putty. E ka boela ya ntlafatsa tshebetso ya ho boloka metsi le ho kopanya sehlahisoa. HPMC e nang le viscosity e phahameng e ka ntlafatsa thepa ya mechini ya sehlahisoa, jwalo ka matla le ho tshwarella. E loketse phofo ya putty e hlokang ho teteana ho hoholo le tshebetso ya ho thibela ho thella.
ha re phethela:
Li-ether tsa cellulose li sebelisoa haholo indastering ea kaho ka lebaka la thepa ea tsona e ntle ea ho boloka metsi, ho a tiisa le ho a kopanya. HPMC e se e le ether ea cellulose e tsebahalang indastering ea kaho ka lebaka la thepa ea eona e ntle. HPMC e tla ka li-viscosities tse fapaneng, ho tloha tlase ho ea holimo. Tšebeliso ea li-ether tsa cellulose tse nang le li-viscosities tse fapaneng e ka ntlafatsa ts'ebetso, nako ea ho beha, ts'ebetso ea thixotropic, ho boloka metsi, ts'ebetso ea ho kopanya le thepa ea mechini ea phofo ea putty. Tšebeliso ea li-ether tsa cellulose e ka ntlafatsa boleng le ts'ebetso ea phofo ea putty, e leng se etsang hore li lokele lits'ebetso tse fapaneng indastering ea kaho.
Nako ea poso: Phupu-20-2023