Methyl Hydroxyethyl Cellulose (MHEC): Tlhaloso e Feletseng
Selelekela:
Methyl Hydroxyethyl Cellulose, e atisang ho khutsufatsoa e le MHEC, ke cellulose ether e fumaneng botumo ho pholletsa le liindasteri tse fapaneng ka thepa ea eona e ikhethang le e fapaneng.K'hemik'hale ena e tsoang ho cellulose e fumana ts'ebeliso ho tsa kaho, meriana, litlolo, le tse ling.Phuputsong ena e pharaletseng, re hlahloba sebopeho, thepa, mekhoa ea tlhahiso, le mefuta e fapaneng ea likopo tsa MHEC.
Sebopeho sa Lik'hemik'hale:
MHEC ke ether ea cellulose e fetotsoeng e nkiloeng ho cellulose ea tlhaho ea polymer, lik'habohaedreite tse rarahaneng tse nang le likarolo tsa tsoekere.Phetoho e kenyelletsa ho hlahisa lihlopha tsa methyl le hydroxyethyl mokokotlong oa cellulose.Phetoho ena e fana ka litšobotsi tse khethehileng ho MHEC, e etsa hore e tšoanelehe bakeng sa mefuta e mengata ea likopo.
Thepa ea MHEC:
1. Thickening le Viscosity Taolo:
MHEC e tsebahala ka thepa ea eona e teteaneng, e etsa hore e be moemeli ea sebetsang hantle oa ho laola li-viscosity tsa tharollo.Tšobotsi ena e bohlokoa haholo indastering eo ho eona ho hlokahalang taolo e nepahetseng ea rheological, joalo ka ha ho etsoa lipente, likhomaretsi le lihlahisoa tse fapaneng tsa mokelikeli.
2. Paballo ea Metsi:
E 'ngoe ea likarolo tse hlokomelehang tsa MHEC ke bokhoni ba eona ba ho boloka metsi.Sebakeng sa lisebelisoa tsa kaho, tse kang seretse le samente, MHEC e sebetsa e le moemeli o babatsehang oa ho boloka metsi.Bokhoni bona bo thusa ho thibela ho omisoa ka potlako, ho matlafatsa ts'ebetso le ho khomarela tšebeliso ea lisebelisoa tsena.
3. Binder ho Lihlahisoa tsa Kaho:
MHEC e bapala karolo ea bohlokoa e le tlamahano ho thehoeng ha lihlahisoa tsa kaho.Li-adhesives tsa lithaele, li-renders tse thehiloeng ho samente, le metsoako e kopanetsoeng e rua molemo ka ho eketsoa ha MHEC, e ntlafatsang ts'ebetso ea bona ka kakaretso le ho tšoarella.
4. Likopo tsa Meriana le Litlolo:
Liindasteri tsa meriana le tsa litlolo li amohetse MHEC bakeng sa ho feto-fetoha ha eona.Mekhatlong ea meriana, MHEC e sebetsa e le motenya, stabilizer, le binder ka mefuta e fapaneng ea litekanyetso, ho kenyeletsoa meriana ea molomo le lisebelisoa tsa lihlooho tse kang mafura le litlolo.Ka mokhoa o ts'oanang, indasteri ea litlolo e kenyelletsa MHEC bakeng sa bokhoni ba eona ba ho ntlafatsa sebopeho le botsitso ba lihlahisoa.
5. Lintho tsa ho Etsa Lifilimi:
MHEC e bonts'a thepa ea ho etsa lifilimi, e etsa hore e tšoanelehe bakeng sa lits'ebetso tsa ho roala le likhomaretsi.Tšobotsi ena e kenya letsoho ho thehoeng ha filimi e kopanetsoeng le e sireletsang, ho matlafatsa ts'ebetso ea sehlahisoa sa ho qetela.
Mokhoa oa Tlhahiso:
Tlhahiso ea MHEC e kenyelletsa mehato e mengata, ho qala ka ho ntšoa ha selulose mehloling e thehiloeng limela.Wood pulp ke ntho e tloaelehileng ea ho qala, le hoja mehloli e meng e kang k'hothone le limela tse ling tse nang le fiber le tsona li ka sebelisoa.Joale selulose e kenngoa ka tlas'a phetoho ea lik'hemik'hale ka mekhoa ea etherification, ho hlahisa lihlopha tsa methyl le hydroxyethyl holim'a ketane ea cellulose.Tekanyo ea ho kenya sebaka le boima ba limolek'hule bo ka laoloa nakong ea tlhahiso, ho lumella hore MHEC e tloaelehe ho finyella litlhoko tse khethehileng tsa kopo.
Likopo tsa MHEC:
1. Indasteri ea Kaho:
MHEC e fumana ts'ebeliso e kholo indastering ea kaho.Joaloka moemeli oa ho boloka metsi, e matlafatsa ts'ebetso ea lisebelisoa tsa samente, ho kenyelletsa le seretse le li-grouts.Lintho tsa eona tse tlamang li kenya letsoho ho thehoeng ha likhomaretsi tsa lithaele tse sebetsang hantle haholo, samente le metsoako e kopaneng.
2. Litlhahiso tsa Meriana:
Lefapheng la meriana, MHEC e sebelisoa ka mefuta e fapaneng ea litlhare.Karolo ea eona e le ntho e tiisang matla le e kopanyang e bohlokoa haholo tlhahisong ea matlapa, li-capsules le li-topical formulations.Mekhoa e laoloang ea ho fana ka lithethefatsi e ka boela ea rua molemo ho thepa ea rheological ea MHEC.
3. Litlolo le Lihlahisoa tsa Tlhokomelo ea Motho:
Litlolo tsa litlolo hangata li kenyelletsa MHEC ho fihlela sebopeho se lakatsehang, botsitso le viscosity.Litlolo, litlolo, le li-gel li ka sebelisa MHEC e le sekontiri le se tsitsitseng, e leng se tlatsetsang ho boleng ba kakaretso le bophelo ba lihlahisoa tsena.
4. Lipente le Mekhabiso:
Indasteri ea ho penta le ea ho roala e phahamisa MHEC bakeng sa thepa ea eona e teteaneng le ea ho etsa lifilimi.E thusa ho thibela ho theoha kapa ho rotha nakong ea kopo mme e kenya letsoho ho thehoeng ha seaparo sa junifomo le se tšoarellang.
5. Likhomaretsi:
MHEC e phetha karolo ea ho etsa li-adhesives, tse tlatsetsang ho viscosity ea tsona le matla a ho khomarela.Thepa ea eona ea ho etsa lifilimi e ntlafatsa ts'ebetso ea likhomaretsi ho li-substrates tse fapaneng.
Lintlha tsa Tikoloho le Taolo:
Joalo ka ntho efe kapa efe ea lik'hemik'hale, likarolo tsa tikoloho le taolo ea MHEC ke lintlha tsa bohlokoa.Ho senyeha ha tikoloho ea MHEC, hammoho le phello e ka bang teng tikolohong le bophelong ba batho, li tlameha ho hlahlojoa ka botlalo.Mekhatlo e laolang, joalo ka Setsi sa Tšireletso ea Tikoloho (EPA) le mekhatlo e amehang ea machaba, e ka fana ka tataiso bakeng sa tšebeliso e sireletsehileng le ho lahla lihlahisoa tse nang le MHEC.
Methyl Hydroxyethyl Cellulose, ka motsoako oa eona o ikhethang oa thepa, e fetohile karolo ea bohlokoa lits'ebetsong tse fapaneng tsa indasteri.Ho tloha ho ntlafatsa ts'ebetso ea thepa ea kaho ho kenya letsoho mofuteng le botsitso ba meriana le litlolo, MHEC e ntse e tsoela pele ho phetha karolo ea bohlokoa.Ha liindasteri li ntse li fetoha le tlhokahalo ea lisebelisoa tse tšoarellang le tse sebetsang hantle li ntse li hola, ho feto-fetoha ha maemo ha MHEC ho e beha e le karolo ea bohlokoa tikolohong ea mahlale a thepa ea sejoale-joale.Liphuputso tse ntseng li tsoela pele le nts'etsopele li ka 'na tsa senola menyetla e mecha le lits'ebetso, ho tiisa le ho feta bohlokoa ba MHEC ho theha bokamoso ba liindasteri tse ngata.
Nako ea poso: Jan-04-2024