1. Selelekela sa Hydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl Methylcellulose (HPMC)ke non-ionic cellulose ether e entsoeng ka fiber ea tlhaho ea k'hothone kapa makhasi a lehong ka phetoho ea lik'hemik'hale. HPMC e na le solubility e ntle ea metsi, thickening, botsitso, thepa ea ho etsa filimi le biocompatibility, kahoo e sebelisoa haholo kahong, meriana, lijo, lik'hemik'hale tsa letsatsi le letsatsi le masimo a mang.
2. Mehato ea tlhahiso ea HPMC
Tlhahiso ea HPMC haholo-holo e kenyelletsa mehato e latelang ea bohlokoa:
Tokisetso ea lintho tse tala
Lintho tse ka sehloohong tse tala tsa HPMC ke selulose ea tlhaho e hloekileng haholo (hangata e tsoang k'hothone kapa makhasi a lehong), e hlokang phekolo ea pele ho tlosa litšila le ho netefatsa bohloeki le ho tšoana ha selulose.
Kalafo ea alkaline
Kenya selulose ka har'a reactor 'me u kenye tharollo ea sodium hydroxide (NaOH) e loketseng ho ruruha selulose sebakeng sa alkaline ho etsa alkali cellulose. Ts'ebetso ena e ka eketsa ts'ebetso ea cellulose le ho itokisetsa karabelo e latelang ea etherification.
Etherification reaction
Ho ipapisitsoe le alkali cellulose, methylating agents (joalo ka methyl chloride) le hydroxypropylating agents (joalo ka propylene oxide) li hlahisoa ho phethahatsa karabelo ea etherification. Boitšoaro bo atisa ho etsoa ka mochine o koetsoeng oa khatello e phahameng. Ka mocheso o itseng le khatello, lihlopha tsa hydroxyl tse selulose li nkeloa sebaka ke lihlopha tsa methyl le hydroxypropyl ho theha hydroxypropyl methylcellulose.
Ho hlatsoa ha Neutralization
Ka mor'a karabelo, sehlahisoa se ka 'na sa e-na le li-reagents tsa lik'hemik'hale tse sa sebetsaneng le lihlahisoa, kahoo hoa hlokahala ho eketsa tharollo ea acid bakeng sa phekolo ea neutralization, ebe u hlatsoa ka metsi a mangata kapa motsoako oa lintho tse phelang ho tlosa lintho tse setseng tsa alkaline le litšila.
Ho felloa ke metsi le ho omisa
Tharollo e hlatsoitsoeng ea HPMC e centrifuged kapa e tlhotliloeng ho tlosa metsi a mangata, ebe joale theknoloji ea ho omisa ka mocheso o tlaase e sebelisoa ho etsa phofo e omileng kapa li-flakes ho boloka thepa ea 'mele le lik'hemik'hale tsa HPMC.
Ho sila le ho hlahloba
HPMC e omisitsoeng e romelloa lisebelisoa tsa ho sila bakeng sa ho sila ho fumana phofo ea HPMC ea boholo bo fapaneng ba likaroloana. Ka mor'a moo, ho hlahlojoa le ho hlophisoa ho etsoa ho netefatsa ho tšoana ha sehlahisoa ho finyella litlhoko tse fapaneng tsa kopo.
Ho paka le ho boloka
Ka mor'a tlhahlobo ea boleng, sehlahisoa sa ho qetela se phutheloa ho latela litšebeliso tse fapaneng (joalo ka 25kg / mokotla) 'me li bolokoe sebakeng se omeletseng le se nang le moea o hloekileng ho thibela mongobo kapa tšilafalo.
3. Libaka tse ka sehloohong tsa ts'ebeliso ea HPMC
Ka lebaka la thepa ea eona e ntle ea ho tenya, ho etsa lifilimi, ho boloka metsi, emulsifying le biocompatibility thepa, HPMC e sebelisitsoe haholo liindastering tse ngata:
Indasteri ea kaho
HPMC ke tlatsetso ea bohlokoa bakeng sa thepa ea moaho, e sebelisetsoang haholo:
Seretse sa samente: ntlafatsa mokelikeli oa mohaho, ntlafatsa ho khomarela, le ho thibela tahlehelo e feteletseng ea metsi.
Sekhomaretsi sa lithaele: eketsa ho boloka metsi a sekhomaretsi sa lithaele le ho ntlafatsa ts'ebetso ea kaho.
Lihlahisoa tsa Gypsum: ntlafatsa khanyetso ea crack le ts'ebetso ea kaho.
Putty powder: ntlafatsa ho khomarela, ho hanyetsa ho qhekella le bokhoni ba ho thibela ho fokotseha.
Mokato oa ho ikemela: ho matlafatsa metsi, ho hanyetsa le botsitso.
Indasteri ea meriana
HPMC e sebelisoa haholo lefapheng la meriana e le:
Ho roala le ho etsa filimi bakeng sa matlapa a lithethefatsi: ntlafatsa botsitso ba lithethefatsi le ho laola sekhahla sa ho lokolloa ha lithethefatsi.
Litokisetso tsa tokollo e tsitsitseng le tse laoloang: tse sebelisoang matlapeng a tsoelang pele a lokolloa le likhetla tsa capsule tse laoloang ho laola ho lokolloa ha lithethefatsi.
Li-capsules substitutes: tse sebelisoang ha ho etsoa li-capsules tsa meroho (li-capsules tsa meroho).
4. Indasteri ea lijo
HPMC e sebelisoa e le tlatsetso ea lijo haholo-holo bakeng sa:
Thickener le emulsifier: e sebelisoa ka thepa e halikiloeng, jelly, lisoso, joalo-joalo ho ntlafatsa tatso ea lijo.
Stabilizer: e sebelisoa ka ice cream le lihlahisoa tsa lebese ho thibela ho na ha protheine.
Sejo sa meroho: se sebedisoang joalo ka motenya bakeng sa lijo tse thehiloeng limela ho nka sebaka sa li-stabilizers tse tsoang ho liphoofolo joalo ka gelatin.
Indasteri ea letsatsi le letsatsi ea lik'hemik'hale
HPMC ke motsoako oa bohlokoa ho litlolo le lihlahisoa tsa tlhokomelo ea motho ka mong:
Lihlahisoa tsa tlhokomelo ea letlalo: tse sebelisoang ka lotions, mask a sefahleho, joalo-joalo ho fana ka mongobo le botsitso.
Shampoo le gel ea ho hlatsoa: eketsa botsitso ba foam le ho ntlafatsa viscosity.
Sesepa sa meno: se sebedisoang joalo ka setenya le se nosetsang ho ntlafatsa tatso.
Lipente le li-inks
HPMC e na le thepa e ntle ea ho etsa lifilimi le botsitso ba ho emisa mme e ka sebelisoa bakeng sa:
Pente ea Latex: ntlafatsa ho phunyeha le rheology ea pente le ho thibela pula.
Enke: Ntlafatsa rheology le ho ntlafatsa boleng ba khatiso.
Lisebelisoa tse ling
HPMC e ka sebelisoa hape bakeng sa:
Indasteri ea Ceramic: Joalo ka setlamo, ntlafatsa matla a likheo tsa ceramic.
Temo: E sebelisoa ha ho emisoa chefo e bolaeang likokoanyana le ho koaheloa ka peō ho ntlafatsa botsitso ba moemeli.
Indasteri ea ho etsa lipampiri: Joaloka moemeli oa boholo, ntlafatsa ho thibela metsi le ho hatisoa ha pampiri.
HPMCke sesebelisoa sa polymer se sebelisoang haholo, se sebelisoang haholo ho aha, meriana, lijo, lik'hemik'hale tsa letsatsi le letsatsi, liphahlo le liindasteri tse ling. Ts'ebetso ea eona ea tlhahiso e kenyelletsa pretreatment e tala, alkalization, etherification, ho hlatsoa, ho omisa, ho sila le mehato e meng, sehokelo se seng le se seng se ama boleng ba sehlahisoa sa ho qetela. Ka ntlafatso ea litlhoko tsa ts'ireletso ea tikoloho le kholo ea tlhoko ea 'maraka, theknoloji ea tlhahiso ea HPMC e ntse e ntlafatsoa ho fihlela litlhoko tsa liindasteri tse ling.
Nako ea poso: Mar-25-2025