Hydroxyethyl cellulose (HEC), e tšoeu kapa e mosehla o bobebe, e se nang monko, e se nang chefo e tiileng kapa e phofo, e lokisitsoeng ka ho etherifying ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), e leng ea mofuta oa Nonionic soluble cellulose ethers. Hobane HEC e na le litšobotsi tse ntle tsa ho teteana, ho emisa, ho qhalakanya, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka li-colloid tse sireletsang, e sebelisitsoe haholo lipatlisisong tsa oli, ho koahela, kaho, meriana le lijo, masela, ho etsa pampiri le li-polymer. Polymerization le masimo a mang.
Kamora hore hydroxyethyl cellulose e kopane le pente e thehiloeng metsing?
Jwalo ka sesebediswa se seng sa ionic, hydroxyethyl cellulose e na le thepa e latelang ho phaella ho ho teteana, ho emisa, ho tlama, ho flotation, ho etsa filimi, ho qhalanya, ho boloka metsi le ho fana ka di-colloid tse sireletsang:
HEC e qhibiliha metsing a chesang kapa a batang, 'me ha e potlake mochesong o phahameng kapa e belang, e leng se etsang hore e be le mefuta e mengata ea litšobotsi tsa ho qhibiliha le ho teteana, hammoho le gelling e sa cheseng;
Bokgoni ba ho boloka metsi bo habeli ho feta methyl cellulose, mme bo na le taolo e betere ya phallo;
Ha ho bapisoa le methyl cellulose e tsebahalang le hydroxypropyl methyl cellulose, bokhoni ba ho qhala ha HEC ke bo bobe ka ho fetisisa, empa bokhoni ba ho sireletsa ba colloid ke bona bo matla ka ho fetisisa;
Ha e na ionic 'me e ka sebetsa hammoho le mefuta e mengata ea li-polymer tse ling tse qhibilihang ka metsing, li-surfactant le letsoai. Ke setenya se setle sa colloidal bakeng sa litharollo tsa electrolyte tse nang le mahloriso a mangata.
Mokhoa oa ho sebelisa hydroxyethyl cellulose?
Kenya ka ho toba nakong ea tlhahiso - mokhoa ona ke o bonolo ka ho fetisisa 'me o nka nako e nyane:
Qala ho hlohlelletsa ka ho tsoelang pele ka lebelo le tlase 'me butle-butle u sefe hydroxyethyl cellulose ka ho lekana ka har'a tharollo 'me u tsoele pele ho hlohlelletsa ho fihlela likaroloana tsohle li kolobisitsoe ka hare. Ebe u eketsa lintho tse bolokang le lintho tse ling tse tlatsetsang. Tse kang li-pigment, li-dispersing aids, ammonia, jj. Hlohlelletsa ho fihlela hydroxyethyl cellulose eohle e qhibilihile ka botlalo (viscosity ea tharollo e eketseha haholo) pele u eketsa likarolo tse ling foromong ho etsa karabelo.
E na le joala ba 'mè
Ke ho lokisa jwala ba mme bo nang le mahloriso a mangata pele, ebe o bo eketsa sehlahisweng. Molemo wa mokgwa ona ke hore bo na le ho tenyetseha ho hoholo mme bo ka eketswa ka ho toba sehlahisweng se fedileng, empa bo lokela ho bolokwa hantle. Mehato ya mokgwa ona e tshwana le boholo ba mehato e ho Mokgwa wa 1; phapang ke hore ha ho hlokahale agitator e nang le ho kuta haholo, mme ke di-agitator tse ding feela tse nang le matla a lekaneng a ho boloka hydroxyethyl cellulose e hasantswe ka ho lekana ka hara tharollo tse ka sebediswang, mme di tswele pele ho Hlohlelletsa ho fihlela di qhibilihile ka ho feletseng ka hara tharollo e nang le viscous. Leha ho le jwalo, ho lokela ho hlokomelwa hore setlhare sa antifungal se lokela ho eketswa ho jwala ba mme kapele kamoo ho ka kgonehang.
Malebela a mosa:
Kaha hydroxyethyl cellulose e phekotsoeng holim'a metsi e tšoana le phofo kapa fibrous solid, ha u lokisa hydroxyethyl cellulose mother liquor, u hopotse ho ela hloko lintlha tse latelang:
Pele le ka mora ho eketsa hydroxyethyl cellulose, e lokela ho dula e hlohlelletswa ho fihlela tharollo e bonaletsa ka botlalo ebile e hlakile;
E tlameha ho hlohloreloa ka har'a moqomo o kopanyang butle, 'me u se ke ua hokahanya ka ho toba li-klips kapa li-spheroid le hydroxyethyl cellulose ka har'a moqomo o kopanyang;
Mocheso oa metsi le boleng ba pH ba metsi li na le kamano ea bohlokoa le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa ho eona;
U se ke ua eketsa lintho tse ling tsa alkaline motswakong pelehydroxyethyl cellulosePhofo e kolobisoa ka metsi. Ho eketsa boleng ba pH ka mora ho e kolobisa ho tla thusa ho qhibilihisa;
Ka hohle kamoo ho ka khonehang, eketsa moemeli oa antifungal esale pele;
Ha o sebedisa hydroxyethyl cellulose e nang le viscosity e phahameng, mahloriso a jwala ba mme ha a lokela ho ba hodimo ho feta 2.5-3% (ka boima), ho seng jwalo jwala ba mme bo thata ho bo sebetsana.
Nako ea poso: Mmesa-28-2024