Hydroxyethyl cellulose (HEC) ke thepa ea polymer e sa qhibiliheng metsing e sa ionic e sebelisoang haholo litlolong, meriana, lipenteng, liphahlong, kahong le masimong a mang. E na le ho teteana ho hoholo, ho emisoa, ho hasana, ho emulsification, ho etsa filimi, ho boloka metsi le thepa e meng, kahoo e fetohile moemeli oa bohlokoa oa thuso liindastering tse ngata. Leha ho le joalo, hydroxyethyl cellulose ha e fumanoe ka ho toba ho tsoa linthong tsa tlhaho, empa e fumanoa ka ho fetola cellulose ea tlhaho ka lik'hemik'hale. Ho fihlela sena, ho utloisisa mohloli oa tlhaho oa hydroxyethyl cellulose, re hloka pele ho utloisisa mohloli le sebopeho sa cellulose.
Mohloli oa tlhaho oa cellulose
Cellulose ke e 'ngoe ea li-polymer tse ngata ka ho fetisisa tsa tlhaho lefatšeng 'me e fumaneha haholo maboteng a sele a limela, haholo-holo limela tse nang le lehong, k'hothone, folaxe le likhoele tse ling tsa limela. Ke karolo ea bohlokoa sebopehong sa limela 'me e fana ka matla le botsitso ba mechini. Yuniti ea motheo ea cellulose ke molek'hule ea glucose, e hokahaneng ka litlamo tsa β-1,4-glycosidic ho theha sebopeho se selelele sa ketane. Jwalo ka thepa ea tlhaho ea polymer, cellulose e na le thepa e ntle ea 'mele le ea lik'hemik'hale, e leng se etsang hore e be thepa ea bohlokoa bakeng sa lintho tse fapaneng tse hlahisoang.
Mokhoa oa ho lokisa hydroxyethyl cellulose
Leha cellulose ka boeona e na le thepa e mengata e babatsehang, mefuta ea ts'ebeliso ea eona e lekanyelitsoe ho isa bohōleng bo itseng. Lebaka le ka sehloohong ke hore cellulose e na le ho qhibiliha ho fokolang, haholo-holo ho qhibiliha ho fokolang ka metsing. E le ho ntlafatsa thepa ena, bo-rasaense ba fetola cellulose ka lik'hemik'hale ho lokisa lintho tse fapaneng tse hlahisoang ke cellulose. Hydroxyethyl cellulose ke ether ea cellulose e qhibilihang ka metsing e fumanoang ka ho kopanya cellulose ea tlhaho ka ethoxylating ka karabelo ea lik'hemik'hale.
Mokgweng o ikgethang wa ho lokisa, cellulose ya tlhaho e qhibilihiswa pele ka hara tharollo ya alkali, ebe ethylene oxide e eketswa tsamaisong ya karabelo. Karabelo ya ethoxylation ya dihlopha tsa ethylene oxide le hydroxyl ka hara cellulose e etsahala ho hlahisa hydroxyethyl cellulose. Phetoho ena e eketsa hydrophilicity ya diketane tsa cellulose, ka hona e ntlafatsa ho qhibiliha ha yona le thepa ya viscosity ka metsing.
Mehloli e meholo ea thepa e tala
Thepa ea mantlha ea tlhaho e tala bakeng sa ho lokisa hydroxyethyl cellulose ke cellulose, 'me mehloli ea tlhaho ea cellulose e kenyelletsa:
Patsi: Selulose e ngata patsing, haholo-holo patsing e nang le makhasi a mangata le a malelele, moo selulose e ka fihlang ho 40%-50%. Patsi ke e 'ngoe ea mehloli ea bohlokoa ka ho fetisisa ea selulose indastering, haholo-holo ho etseng pampiri le tlhahisong ea lintho tse tsoang ho selulose.
K'hothone: Faeba ea k'hothone e batla e entsoe ka cellulose e hloekileng, 'me selulose e ka har'a k'hothone e phahame ho feta 90%. Ka lebaka la bohloeki ba eona bo phahameng, faeba ea k'hothone hangata e sebelisoa ho lokisa lintho tse tsoang ho cellulose tsa boleng bo holimo.
Likhoele tsa limela tse kang folaxe le hemp: Likhoele tsena tsa limela le tsona li ruile cellulose, 'me kaha likhoele tsena tsa limela hangata li na le matla a phahameng a mechini, li boetse li na le melemo e itseng ho ntšoeng ha cellulose.
Litšila tsa temo: ho kenyeletsoa joang, joang ba koro, joang ba poone, jj. Lisebelisoa tsena li na le selulose e itseng, 'me selulose e ka ntšoa ho tsona ka mekhoa e nepahetseng ea kalafo, e fanang ka mohloli o theko e tlase le o ka nchafatsoang oa thepa e tala bakeng sa tlhahiso ea lintho tse tsoang ho selulose.
Libaka tsa ts'ebeliso ea hydroxyethyl cellulose
Ka lebaka la thepa e ikhethang ea hydroxyethyl cellulose, e sebelisoa haholo masimong a mangata. Tse latelang ke libaka tse 'maloa tse kholo tsa ts'ebeliso:
Indasteri ea kaho: Hydroxyethyl cellulose e sebelisoa haholo thepa ea kaho e le ntho e tenyang le e bolokang metsi, haholo-holo ka har'a seretse sa samente, gypsum, phofo ea putty le lisebelisoa tse ling, tse ka ntlafatsang ka katleho thepa ea kaho le ea ho boloka metsi ea thepa.
Indasteri ea lik'hemik'hale ea letsatsi le letsatsi: Lisepaneng tsa sesepa, lihlahisoa tsa tlhokomelo ea letlalo, li-shampoo le lihlahisoa tse ling tsa lik'hemik'hale tsa letsatsi le letsatsi, hydroxyethyl cellulose e sebelisoa e le setefatsi le se tsitsitseng ho ntlafatsa maikutlo le botsitso ba sehlahisoa.
Pente le dikobo: Indastering ya dikobo, hydroxyethyl cellulose e sebediswa e le sesebelisoa sa ho teteana le sa taolo ya rheology ho ntlafatsa bokgoni ba ho sebetsa ba kobo le ho qoba ho thella.
Tšimo ea meriana: Litokisetsong tsa meriana, hydroxyethyl cellulose e ka sebelisoa e le ntho e kopanyang, e tiisang le e emisang matlapeng ho ntlafatsa litšobotsi tsa ho lokolloa le botsitso ba meriana.
Leha hydroxyethyl cellulose e se ntho e hlahang ka tlhaho, thepa ea eona ea mantlha e tala, cellulose, e fumaneha haholo limela tlhahong. Ka phetoho ea lik'hemik'hale, cellulose ea tlhaho e ka fetoloa hore e be hydroxyethyl cellulose ka ts'ebetso e ntle haholo 'me ea sebelisoa liindastering tse fapaneng. Limela tsa tlhaho tse kang lehong, k'hothone, folaxe, jj. li fana ka mohloli o ruileng oa thepa e tala bakeng sa tlhahiso ea hydroxyethyl cellulose. Ka tsoelo-pele ea saense le theknoloji le keketseho ea tlhoko ea indasteri, ts'ebetso ea tlhahiso ea hydroxyethyl cellulose le eona e ntse e ntlafatsoa khafetsa, 'me ho lebelletsoe hore e tla bontša bohlokoa ba eona bo ikhethang masimong a mangata nakong e tlang.
Nako ea poso: Mphalane-23-2024