Hydroxethyl Cellulose E sebelisoa haholo indastering e fapaneng, ho kopanyelletsa le meriana, litlolo, lipere, ka lebaka la boitšoaro bo botle, le thepa ea litlolo tsa eona. Ho hlophisoa ha hydroxethyll cellulosese e kenyelletsa hore naeldul ea cellulose le oxide ea ethylene e tlasa maemo a alkaline. Ts'ebetso ena e ka robeha mehatong e 'maloa ea bohlokoa: Makhooa a cellulose, alkalization, ativation, e sa nke lehlakore le ho omisa.
1. Tlhoekiso ea celbulase celbulase
Mohato oa pele litokisetsong tsa hydroxethyl celdoulose ea hydrouse Lehlora la Raw le na le litšila tse kang Lignin, Hemicellulose, 'me tse ling li tlameha ho tlosoa ho fumana cellulose e phahameng haholo ea' mala oa lik'hemik'hale.
Mehato e amehang:
Ts'ebetso ea tšebetso: Cllulose ea Rawa e sebetsa ka mokhoa o matla ho fokotsa boholo ba eona le ho eketsa sebaka sa eona, ho tsamaisa litlhahlobo tse latelang tsa lik'hemik'hale.
Phekolo ea lik'hemik'hale: Calluulose e phekoloa ka lik'hemik'hale tse kang sodium hydroxide
2. Alkalization
Cellulose e hloekisitsoeng e etsoa ka nako eo motho a e sebelisang ho kenya tšebetsong karabelo ea boithatelo. Sena se kenyelletsa ho phekola cellulose e nang le phepelo ea metsi a mangata a sodium hydroxide.
Karabelo:
Cehlolose + Naoh → alkali cellulose
Tsamaiso:
Clilouse e emisoa ka metsing, 'me tharollo ea Sodium hydroxide e eketsoa. Ka linako tse ling Nao ka tloaelo - hangata seha ho tloha ho 10-30%, 'me karabelo e etsoa lifotong tse pakeng tsa 20-40 ° C.
Motsoako ona o thetsoe ho netefatsa hore o monya Alkali, 'me o lebisa ho ho theha alkali cellulose ea alkali. Ma-bohareng a naha a sebetsana le ho sebetsa hantle ho feta ho e-ea ethylene, ho nolofalletsa ts'ebetso ea litifition.
3. Etherization
Bohato ba bohlokoa ho lokiseng hydroxethyl celdoulose ke phallo ea alkali cellulase e nang le oxide. Boitšoaro bona bo hlahisa lihlopha tsa hydroxethyl (-ch2chchOhh)
Karabelo:
Hlkali celllolose → Hydroxethyl celdulouse + Naoh
Tsamaiso:
Exide e argide e eketsoa ho alkali chololulese ea alkali, ebang ke sehlopha sa hotch kapa se tsoela pele. Karabelo hangata e etsoa ka autoclave kapa mohatetso oa khatello.
Maemo a hau a karabelo, ho kenyelletsa mocheso (50-100 ° C) le khatello (1-5 ATM), li laoloa ka hloko ho netefatsa hore ho nkeloa sebaka sa hydroyethl. Degree of All off (DS) le sar) (ms) ke lipapatso tse bohlokoa tse susumetsang thepa ea sehlahisoa sa ho qetela.
4. Nolonte
Kamora karabelo ea menyetla, motsoako o na le hydroxethyl celdrokerthyl celdoulose le sale ea sodium ea sodium. Mohato o latelang ke ho se nke lehlakore moo Alkali tse feteletseng u sebelisang acid, hangata acid acid (Ch3cooh) acid (hcdrochloric acid.
ReAyep: Naoh + HCl → Nacl + h2o
Tsamaiso:
Acid e eketsoa butle ka motsoako o laoloang ea ho qoba mocheso o feteletseng ho thibela ho senya monwla.
Motsoako o sa jelloang oa paate o ile oa hlahella ho etsa bonnete ba hore e ka hare ho moo o lakatsehang, ka tloaelo ph (6-8).
5. Ho hlatsoa
Kamora ho se nke lehlakore ho sa nke lehlakore, sehlahisoa se tlameha ho hlatsuoa ho tlosa letsoai le lihlahisoa tse ling. Mohato ona ke oa bohlokoa bakeng sa ho fumana Cllroxethyl Cem Celdlese.
Tsamaiso:
Motsoako oa karabelo o hlapollotsoe ka metsi, 'me hydroxethyl cellulose e arotsoe ke ho feto-fetoha ha ho feto-fetoha ha ho fifala kapa ho bokelloa.
Heldrolese ea hydrothbethll e hlatsoitsoe khafetsa ke metsi a mabekang ho tlosa letsoai le sa feleng la letsoai le litšila. Ts'ebetso ea ho hlatsoa e tsoela pele ho fihlela metsi a hlatsoa a fihla ho phepelo e itseng, e bonts'a ho tlosa litšila tsa qubu.
6. Ho omella
Mohato oa ho qetela litokisetso tsa hydroxethyl conluulose e omile. Mohato ona o tlosa metsi a mangata, a hlahisang sehlahisoa se ommeng, e tsoekere e loketse likopo tse fapaneng.
Tsamaiso:
Heldroxethyl Cellulose ea Hydroxethyl e phatlalalitsoe ka litselana tse omileng kapa li fetisa kotopong e omileng. Mocheso o omiso o laoloa ka hloko ho qoba ho nyonyeha hoa botloea, hangata ho tloha ho 50-80 ° C.
Ntle le moo, ho omella ho omella ho ka sebelisoa bakeng sa ho omisoa ka potlako le ka mokhoa o atlehileng. Ka ho omella, tharollo ea hydrousyl e atoloha ka marotholi a matle ebe o omisoa ka letsohong le chesang la moea, e fella ka phofo e ntle.
Sehlahisoa se omisitsoeng se entsoe ka boholo bo khethiloeng le ho paka ka polokelo le ho tsamaisoa.
Taolo ea boleng le lits'ebetso
Nakong ea ts'ebetso eohle ea ho lokisa, mehato e thata ea taolo ea boleng bo boima e kenngoa ho netefatsa hore e tla etsa hore cellulose ea hydroyethyl. Liraka tsa bohlokoa tse kang liketsahalo, litaba tsa mongobo le boholo ba tsona li shebelletsoe feela ho hlahlojoa.
Likopo:
Meriana: e sebelisoang e le moemeli ea toneng, ea tlama le maemo a hlomeliang ke liforomo, likatse le litlolo le lisebelisoa.
Li-cosmetics: e fana ka pono le ho tsamaisa lihlahisoa tse kang litlolo, litlolo le shampoos.
Paints le Coatis: liketso: dipere e le modufier ea thipa le rheology, o ntlafatsa thepa ea kopo le botsitso ba lipere.
Indasteri ea lijo: e sebetsa joaloka bolo ea thipa, e hlohlelletsang, le emulifier lihlahisoa tse fapaneng tsa lijo.
Ho hlophisoa ha hydroxethyll celdlose e kenyelletsa letoto la liphetoho tse hlalositsoeng hantle le mesebetsing e hlophisitsoeng e etselitsoeng ho kenya celdulose ea hydroxethyl. Mohato o mong le o mong, ho tsoa ho tlhoekiso ea Molulo ho omella, e bohlokoa ho khetholla boleng le ts'ebetso ea sehlahisoa sa ho qetela. Makhoba a feto-lekane a hydroxethyl a etsa hore e be lekhalomong ea bohlokoa ho indasteri e mengata, e totobatsang bohlokoa ba litloaelo tse hlakileng tsa likotlo tse fapaneng.
Nako ea poso: May-28-2024