1. Selelekela ho Hydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl Methylcellulose (HPMC)ke ether ya cellulose e seng ya ionic e entsweng ka faeba ya k'hothone ya tlhaho kapa pulp ya lehong ka ho fetola dikhemikhale. HPMC e na le ho qhibiliha ho hotle ha metsi, ho teteana, botsitso, thepa ya ho etsa filimi le ho ikamahanya le diphedi, kahoo e sebediswa haholo kahong, merianeng, dijong, dikhemikhaleng tsa letsatsi le letsatsi le mafapheng a mang.
2. Mehato ea tlhahiso ea HPMC
Tlhahiso ea HPMC e kenyelletsa haholo-holo mehato ea bohlokoa e latelang:
Tokisetso ea thepa e tala
Thepa e ka sehloohong e tala ea HPMC ke cellulose ea tlhaho e hloekileng haholo (hangata e tsoa k'hothoneng kapa pulp ea lehong), e hlokang phekolo ea pele ho tlosa litšila le ho netefatsa bohloeki le ho tšoana ha cellulose.
Kalafo ea alkalinization
Kenya cellulose ka har'a reactor 'me u kenye tharollo e loketseng ea sodium hydroxide (NaOH) ho ruruhisa cellulose tikolohong ea alkaline ho theha alkali cellulose. Ts'ebetso ena e ka eketsa ts'ebetso ea cellulose le ho itokisetsa liketso tse latelang tsa etherification.
Karabelo ea Etherification
Ho latela alkali cellulose, metsoako ea methylating (joalo ka methyl chloride) le metsoako ea hydroxypropylating (joalo ka propylene oxide) li hlahisoa ho etsa karabelo ea etherification. Hangata karabelo e etsoa ka har'a reactor e koetsoeng ea khatello e phahameng. Mochesong le khatellong e itseng, lihlopha tsa hydroxyl tse holim'a cellulose li nkeloa sebaka ke lihlopha tsa methyl le hydroxypropyl ho theha hydroxypropyl methylcellulose.
Ho hlatsoa ka mokhoa o sa nke lehlakore
Kamora karabelo, sehlahisoa se ka 'na sa ba le li-reagent tsa lik'hemik'hale tse sa arajoang le lihlahisoa tse ling, kahoo ho hlokahala ho eketsa tharollo ea asiti bakeng sa kalafo ea ho se nke lehlakore, ebe u hlatsoa ka metsi a mangata kapa tharollo ea manyolo ho tlosa lintho tse setseng tsa alkaline le litšila.
Ho felloa ke metsi 'meleng le ho omisa
Tharollo ea HPMC e hlatsoitsoeng e tšeloa ka seterifung kapa e sefshoa ho tlosa metsi a mangata, ebe theknoloji ea ho omisa ea mocheso o tlase e sebelisoa ho etsa phofo e omileng kapa li-flakes ho boloka thepa ea 'mele le ea lik'hemik'hale ea HPMC.
Ho sila le ho hlahloba
HPMC e omisitsweng e romelwa disebedisweng tsa ho sila bakeng sa ho sila ho fumana phofo ya HPMC ya boholo bo fapaneng ba dikarolwana. Ka mora moo, ho hlahlojwa le ho hlophiswa ha dihlahiswa ho netefatsa hore dihlahiswa di tshwana ho fihlela ditlhoko tse fapaneng tsa tshebediso.
Ho paka le ho boloka
Kamora tlhahlobo ea boleng, sehlahisoa sa ho qetela se pakoa ho latela tšebeliso e fapaneng (joalo ka 25kg/mokotla) 'me se bolokoa tikolohong e omileng le e nang le moea o kenang 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 filimi, ho boloka metsi, ho etsa emulsifying le ho lumellana le lintho tse phelang, HPMC e 'nile ea sebelisoa haholo liindastering tse ngata:
Indasteri ea kaho
HPMC ke sehlomathiso sa bohlokoa bakeng sa thepa ea kaho, se sebelisetsoang haholo-holo:
Seretse sa samente: ntlafatsa ho phalla ha moaho, ho ntlafatsa ho khomarela, le ho thibela tahlehelo e feteletseng ea metsi.
Sekhomaretsi sa thaele: eketsa ho boloka metsi ha sekhomaretsi sa thaele le ho ntlafatsa ts'ebetso ea kaho.
Lihlahisoa tsa gypsum: li ntlafatsa ho hanyetsa mapetso le ts'ebetso ea kaho.
Phofo ea putty: e ntlafatsa ho khomarela, ho hanyetsa mapetso le bokhoni ba ho thibela ho thella.
Fatše e iketsang: ntlafatsa ho phalla ha metsi, ho hanyetsa ho tsofala le botsitso.
Indasteri ea meriana
HPMC e sebelisoa haholo lefapheng la meriana e le:
Setlolo le se etsang filimi bakeng sa matlapa a meriana: se ntlafatsa botsitso ba meriana le sekhahla sa taolo ea ho lokolloa ha meriana.
Litokisetso tsa ho lokolla ka mokhoa o tsitsitseng le ho lokolla ka mokhoa o laoloang: li sebelisoa matlapeng a lokollang ka mokhoa o tsitsitseng le likhetleng tsa capsule tse lokollang ka mokhoa o laoloang ho laola ho lokolloa ha moriana.
Lintho tse nkang sebaka sa capsule: li sebelisoa tlhahisong ea li-capsule tsa meroho (li-capsule tsa meroho).
4. Indasteri ea lijo
HPMC e sebediswa e le sehlomathiso sa dijo haholo-holo bakeng sa:
Sekoekoe le se kopanyang: se sebelisoa lijong tse besitsoeng, lijeli, lisoso, jj. ho ntlafatsa tatso ea lijo.
Sehatsetsi: se sebediswang ka hara ice cream le dihlahiswa tsa lebese ho thibela ho na ha protheine.
Lijo tsa meroho: li sebelisoa e le setefatsi bakeng sa lijo tse thehiloeng limela ho nkela lintho tse matlafatsang tse tsoang liphoofolong tse kang gelatin sebaka.
Indasteri ea lik'hemik'hale ea letsatsi le letsatsi
HPMC ke motsoako oa bohlokoa litlolong le lihlahisoa tsa tlhokomelo ea botho:
Lihlahisoa tsa tlhokomelo ea letlalo: li sebelisoa li-lotion, limaske tsa sefahleho, jj. ho fana ka mongobo le botsitso.
Shampoo le gel ea shaoara: eketsa botsitso ba foam le ho ntlafatsa ho hlaka ha letlalo.
Setlolo sa meno: se sebelisoa e le setenya le se nolofatsang letlalo ho ntlafatsa tatso.
Pente le enke
HPMC e na le thepa e ntle ea ho etsa filimi le botsitso ba ho emisoa 'me e ka sebelisoa bakeng sa:
Pente ea latex: e ntlafatsa ho hlanya le ho rarahana ha pente le ho thibela pula.
Enke: Ntlafatsa rheology le ho ntlafatsa boleng ba khatiso.
Lisebelisoa tse ling
HPMC e ka boela ea sebelisoa bakeng sa:
Indasteri ea letsopa: Joaloka sehokelo, ntlafatsa matla a likheo tsa letsopa.
Temo: E sebelisoa ho li-suspension tsa chefo e bolaeang likokoanyana le ho koahela peo ho ntlafatsa botsitso ba moemeli.
Indasteri ea ho etsa pampiri: Joaloka moemeli oa boholo, ntlafatsa ho hanyetsa metsi le ho khona ho hatisa pampiri.
HPMCke thepa ea polymer e sebetsang haholo, e sebelisoang haholo kahong, meriana, lijong, lik'hemik'hale tsa letsatsi le letsatsi, liphahlo le liindastering tse ling. Ts'ebetso ea eona ea tlhahiso e kenyelletsa kalafo ea pele ea thepa e tala, alkalization, etherification, ho hlatsoa, ho omisa, ho sila le mehato e meng, khokahano ka 'ngoe e 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 le eona e ntse e ntlafatsoa ho fihlela litlhoko tsa liindasteri tse ling.
Nako ea poso: Hlakubele-25-2025