Joalo ka thepa e sebelisoang hangata liindastering tse fapaneng, phofshoana ea cellulose ether e na le sekhomaretsi se setle, se teteaneng le ho boloka metsi. E sebelisoa haholo kahong, meriana, litlolo, lijo le masimo a mang a mangata. Leha ho le joalo, ho fumana tshebetso e ntle ka ho fetisisa ho tswa ho cellulose ether powders, tlhokomelo e tlameha ho lefshoa ts'ebetsong ea eona ea ho qhibiliha. Mona ke lintlha tse ling tsa bohlokoa tseo u ka li nahanang ha u qhaqha cellulose ether powder:
1. Khetha solvent e nepahetseng
Cellulose ether powder e qhibiliha haholo ka metsing, e etsa tharollo e hlakileng, ea viscous. Leha ho le joalo, mefuta e fapaneng ea li-cellulose ethers e na le ho qhibiliha ho fapaneng metsing, 'me ho qhibiliha ha tsona ho tla angoa ke lintlha tse kang mocheso le pH. Ka hona, ho bohlokoa ho khetha setlolo se nepahetseng bakeng sa litholoana tse ntle.
Ka mohlala, haeba phofshoana ea ether ea cellulose e hloka ho qhibiliha sebakeng se tlaase sa mocheso kapa tsamaisong e tlaase ea pH, hydroxypropylmethylcellulose (HPMC) kapa methylcellulose (MC) e ka ba molemo ho feta ethylcellulose (EC) kapa carboxylate Molemo o Molemo oa Khetho Methylcellulose (CMC). Ke habohlokoa ho khetha solvent e nepahetseng ho nahanoa ka litlhoko tsa kopo le thepa ea solvent.
2. Laola mocheso
Mocheso ke ntlha e 'ngoe ea bohlokoa e amang ho qhibiliha ha cellulose ether powder. The solubility ea cellulose ethers e eketseha ka mocheso, empa ho joalo le ka sekhahla sa ho qhibiliha, se ka lebisang ho li-powders tse kopantsoeng kapa tse kopantsoeng. Ka hona, mocheso o tlameha ho laoloa ka hloko nakong ea ts'ebetso ea ho qhibiliha.
Ka kakaretso, mocheso o nepahetseng bakeng sa ho qhala cellulose ether ke 20-40°C. Haeba mocheso o le tlase haholo, ho ka 'na ha hlokahala ho lelefatsa nako ea ho qhibiliha kapa ho sebelisa solvent e loketseng haholoanyane. Haeba mocheso o phahame haholo, o ka baka ho senyeha ha cellulose ether le ho ama ts'ebetso ea eona.
3. Hlohlelletsa le ho hlohlelletsa
Ho hlohlelletsa le ho ferekana ho boetse ho bohlokoa ha ho qhaqha selulose ether phofo. Ho ferekana ho loketseng ho thusa phofo hore e qhalane ka ho lekana ka har'a sehlaolosa 'me e thibela ho bokellana. Ho hlohlelletsa ho boetse ho thusa ho eketsa sekhahla sa ho qhibiliha, haholo-holo bakeng sa tharollo e phahameng ea viscosity.
Leha ho le joalo, ho ferekana ho feteletseng ho ka hlahisa li-bubble tsa moea kapa foam, tse ka amang ho hlaka le botsitso ba tharollo. Ka hona, hoa hlokahala ho fetola lebelo le matla a susumetsang ho latela litlhoko tse khethehileng le tikoloho ea kopo ea phofo ea cellulose ether.
4. Lisebelisoa
Li-additives li ka eketsoa nakong ea ho qhibiliha ha phofo ea ether ea cellulose ho ntlafatsa ts'ebetso ea eona kapa botsitso. Mohlala, borax kapa lintho tse ling tsa alkaline li ka eketsoa ho lokisa pH ea tharollo le ho eketsa viscosity. Sodium bicarbonate e boetse e eketsa viscosity ea tharollo, e fokotsa lebelo la ho qhibiliha.
Li-additives tse ling tse kang li-surfactants, matsoai kapa li-polymer li ka sebelisoa ho matlafatsa ho qhibiliha, botsitso kapa lisebelisoa tse ling tsa tharollo ea cellulose ether. Leha ho le joalo, ke habohlokoa ho sebelisa li-additives ka mokhoa o itekanetseng le ho khetha ka hloko, kaha li-additives tse feteletseng kapa tse sa lokelang li ka baka litla-morao tse sa batleheng.
5. Ho qeta nako
Nako ea ho qhibiliha ke parameter ea bohlokoa tlhahiso le tšebeliso ea phofo ea cellulose ether. Nako ea ho qhibiliha e itšetlehile ka lintlha tse ngata tse kang mofuta oa cellulose ether, solvent, mocheso, lebelo le susumetsang maikutlo.
Ka kakaretso, phofo ea cellulose ether e lokela ho kenngoa ho solvent butle-butle le butle-butle ka ho kopanya kamehla ho fihlela ho fumanoa tharollo ea homogeneous. Linako tsa ho qhala li ka fapana ho tloha ho metsotso e seng mekae ho ea ho lihora tse 'maloa, ho itšetlehile ka lintlha tse boletsoeng ka holimo.
Ke habohlokoa ho shebella ka hloko ts'ebetso ea ho qhibiliha le ho fetola litekanyetso ha ho hlokahala ho netefatsa boleng le ho tsitsisa ha tharollo ea cellulose ether.
Qetellong, phofo ea cellulose ether ke lisebelisoa tse ngata le tsa bohlokoa likarolong tse sa tšoaneng tsa indasteri. Leha ho le joalo, ts'ebetso ea ho qhala e bohlokoa ho fihlela ts'ebetso ea eona e nepahetseng. Ka ho ela hloko lintlha tse kang khetho ea solvent, taolo ea mocheso, ho sisinyeha, li-additives, le nako ea ho qhibiliha, hoa khoneha ho fumana tharollo ea boleng bo phahameng ba cellulose ether e finyellang litlhoko tsa kopo.
Nako ea poso: Aug-18-2023