Hydroxypropylmethylcellulose (HPMC) ke ether ea cellulose e nkiloeng mehloling ea tlhaho joalo ka li-pulp tsa patsi le li-cotton linters. Ka lebaka la thepa ea eona e ikhethang, ho kenyeletsoa ho qhibiliha ha metsi, bokhoni ba ho teteana, thepa ea ho etsa filimi, jj., e sebelisoa haholo liindastering tse fapaneng. E 'ngoe ea lintlha tsa bohlokoa tseo u lokelang ho li nahana ha u sebelisa HPMC ke viscosity ea eona, e ka amang haholo ts'ebetso ea eona libakeng tse fapaneng tsa ts'ebeliso. Sehloohong sena, re buisana ka hore na ke hobane'ng ha cellulose HPMC e nang le viscosity e fapaneng e lokela ho khethoa bakeng sa libaka tse fapaneng tsa ts'ebeliso, le hore na viscosity e nepahetseng e ka thusa joang ho ntlafatsa ts'ebetso ea HPMC.
Ho teteana ke tekanyo ea ho hanyetsa ha mokelikeli ho phalla 'me ke taba ea bohlokoa ha ho etsoa lihlahisoa tse hlokang litšobotsi tse itseng tsa phallo. Ho teteana ho ama ts'ebetso ea HPMC hobane e khetholla bokhoni ba eona ba ho etsa li-gel, e ama pH ea tharollo, botenya ba lesela, le thepa e meng ea 'mele. HPMC e fumaneha ka mefuta e fapaneng ea ho teteana, mefuta e tloaelehileng haholo ke ho teteana ho tlase (LV), ho teteana ho mahareng (MV) le ho teteana ho phahameng (HV). Mofuta o mong le o mong oa tsena o na le morero o itseng 'me o loketse tikoloho e itseng.
Ho ba le Viscosity e Tlase (LV) HPMC
HPMC e nang le viscosity e tlase e na le boima bo tlase ba limolek'hule 'me e qhibiliha habonolo ka metsing. Ke mofuta o tloaelehileng haholo oa HPMC 'me e sebelisoa liindastering tse fapaneng ho kenyeletsoa lijo, litlolo, kaho le meriana. LV HPMC e loketse haholo bakeng sa lits'ebetso tse hlokang litharollo tsa viscosity tse tlase ho isa bohareng joalo ka li-gel tse hlakileng, li-emulsion le lipente. LV HPMC e ka boela ea sebelisoa ho atolosa bophelo ba lijo, ho fokotsa syneresis le ho fana ka sebopeho se boreleli.
LV HPMC e boetse e sebelisoa khafetsa indastering ea kaho ho ntlafatsa ho sebetsa ha thepa e thehiloeng samenteng joalo ka li-mortar, grout le likhomaretsi tsa thaele. E thusa ho fokotsa tahlehelo ea metsi metswakong ea samente, e thibela ho petsoha, 'me e matlafatsa kamano pakeng tsa thepa. LV HPMC e boetse e sebelisoa ho eketsa matla le ho tšoarella ha plaster, stucco le thepa e 'ngoe e amanang le eona.
Ho tsikinyeha ho Mahareng (MV) HPMC
Viscosity e mahareng ea HPMC e na le boima bo phahameng ba limolek'hule ho feta LV HPMC 'me ha e qhibilihe ka metsing. Hangata e sebelisoa lits'ebetsong tse hlokang litharollo tse tiileng tse kang lipente, li-varnish le enke. MV HPMC e na le taolo e betere ea phallo le thepa ea ts'ebeliso ho feta LV HPMC, e leng se fellang ka botenya ba filimi bo ts'oanang le bo tsitsitseng. MV HPMC e ka boela ea sebelisoa ho feta mefuta e mengata ea pH, e fanang ka ho tenyetseha ho eketsehileng bakeng sa lits'ebetso tse fapaneng.
MV HPMC e boetse e sebelisoa haholo lihlahisoa tsa meriana, joalo ka matlapa a tokollo a laoloang, kaha e liehisa ho qhibiliha 'me kahoo e lelefatsa ho lokolloa ha metsoako e sebetsang.
Ho tsikinyeha ho Hoholo (HV) HPMC
HPMC e nang le viscosity e phahameng e na le boima bo phahameng ka ho fetisisa ba limolek'hule ho feta mefuta eohle e meraro 'me ha e qhibilihe ka metsing ka ho fetisisa. Hangata e sebelisoa lits'ebetsong tse hlokang thepa ea ho teteana le ho tsitsisa, joalo ka lisoso, litlolo le li-gel. HV HPMC e thusa ho ntlafatsa sebopeho le viscosity ea lihlahisoa, e fana ka boiphihlelo bo monate haholoanyane ba mosebelisi. E ka boela ea sebelisoa ho tsitsisa li-emulsion, ho thibela ho lula le ho lelefatsa nako ea ho boloka. Ho feta moo, HV HPMC e atisa ho sebelisoa indastering ea pampiri ho ntlafatsa matla a pampiri le ho hatisoa habonolo.
ha re phethela
Ho teteana ho nepahetseng ha HPMC ho bohlokoa ho ntlafatsa ts'ebetso ea eona libakeng tse fapaneng tsa ts'ebeliso. LV HPMC e loketse haholo lits'ebetso tse hlokang litharollo tsa ho teteana tse tlase ho isa ho tse mahareng, ha MV HPMC e loketse litharollo tse teteaneng joalo ka pente, li-varnish le enke. Qetellong, HV HPMC e loketse lits'ebetso tse hlokang thepa ea ho teteana le ho tsitsisa joalo ka litlolo tsa tranelate, li-gel le lisoso. Ho khetha ho teteana ho nepahetseng ho ka thusa ho ntlafatsa ts'ebetso eohle ea HPMC le ho e etsa hore e tšoanelehe haholoanyane lits'ebetsong tse fapaneng.
Nako ea poso: Phato-31-2023