Pente, eo ka tloaelo e bitsoang pente Chaena. Pente eo ho thoeng ke pente e manehiloe holim'a ntho e lokelang ho sireletsoa kapa ho khabisoa, 'me e ka etsa filimi e tsoelang pele e khomaretsoeng ka thata nthong e lokelang ho manehisoa.
Hydroxyethyl Cellulose ke eng?
Hydroxyethyl cellulose (HEC), e leng solid e tšoeu kapa e mosehla o bobebe, e se nang monko, e se nang chefo kapa e phofo, e lokisitsoeng ka karabelo ea etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), ke ea li-ether tsa cellulose tse qhibilihang tse seng tsa ionic. Kaha 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 colloid e sireletsang, e 'nile ea sebelisoa haholo lipatlisisong tsa oli, ho koahela, kaho, meriana, lijo, masela, ho etsa pampiri le polymer Polymerization le masimo a mang.
Ho etsahala'ng ha hydroxyethyl cellulose e kopana 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 phaphamala, ho etsa filimi, ho qhalanya, ho boloka metsi le ho fana ka colloid e sireletsang:
HEC e qhibiliha ka metsing a chesang kapa a batang, mocheso o phahameng kapa e belisa ntle le pula, hoo e nang le mefuta e mengata ea litšobotsi tsa ho qhibiliha le ho teteana, le gelation e sa cheseng;
Bokgoni ba ho boloka metsi bo phahame habeli ho feta ba 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? Mokhoa oa ho e eketsa joang?
Kenya ka ho toba nakong ea tlhahiso - mokhoa ona ke o bonolo ka ho fetisisa 'me o nka nako e khutšoanyane ka ho fetisisa.
Kenya metsi a hloekileng ka baketeng e kholo e nang le motswako o matla oa ho shapa. Qala ho hlohlelletsa khafetsa ka lebelo le tlase 'me butle-butle u sefe hydroxyethyl cellulose ka har'a tharollo ka ho lekana. Tsoela pele ho hlohlelletsa ho fihlela likaroloana tsohle li kolobisitsoe. Ebe u eketsa lintho tse bolokang mongobo le lintho tse ling tse eketsehileng. Tse kang li-pigment, li-dispersing aid, metsi a ammonia, jj. Hlohlelletsa ho fihlela hydroxyethyl cellulose eohle e qhibilihile ka botlalo (ho teteana ha tharollo ho eketseha haholo) pele u eketsa likarolo tse ling foromong ea karabelo.
E na le joala ba 'mè
Ke ho lokisa jwala ba mme ka mahloriso a phahameng pele, ebe o bo eketsa sehlahisweng. Molemo wa mokgwa ona ke hore o na le ho tenyetseha ho hoholo mme o ka eketswa ka ho toba sehlahisweng se fedileng, empa o lokela ho bolokwa hantle. Mehato ya mokgwa ona e tshwana le boholo ba mehato e mokgweng 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 tswelwang pele ntle le ho emisa. Hlohlelletsa ho fihlela e qhibilihile ka ho feletseng hore e be tharollo e nang le viscous. Leha ho le jwalo, ho lokela ho hlokomelwa hore fungicide e tlameha ho eketswa ho jwala ba mme kapele kamoo ho ka kgonehang.
Kaha hydroxyethyl cellulose e phekotsoeng holim'a metsi e tšoana le phofo kapa fibrous solid, Lihongde e u hopotsa hore u ele hloko lintlha tse latelang ha u lokisa hydroxyethyl cellulose mother liquor:
(1) Pele le ka mora ho eketsa hydroxyethyl cellulose, e lokela ho hlohlelletsoa khafetsa ho fihlela tharollo e bonaletsa ka botlalo ebile e hlakile.
(2) E tlameha ho hlohloreloa butle ka tankeng ea ho kopanya, 'me u se ke ua kenya bongata bo bongata kapa ua kenya hydroxyethyl cellulose ka ho toba ka tankeng ea ho kopanya.
(3) Mocheso oa metsi le boleng ba PH metsing li na le kamano ea bohlokoa le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa.
(4) O se ke wa eketsa dintho tse ding tsa alkaline motswakong pele phofo ya hydroxyethyl cellulose e kolobiswa ka metsi. Ho phahamisa pH kamora ho kolobisa ho thusa ho qhibilihisa.
(5) Ka hohle kamoo ho ka khonehang, eketsa sebolaya-mafu esale pele
(6) Ha o sebedisa hydroxyethyl cellulose e nang le viscosity e phahameng, bongata ba jwala ba mme ha boa lokela ho feta 2.5-3% (ka boima), ho seng jwalo jwala ba mme bo tla ba thata ho bo sebetsana.
Nako ea poso: Hlakubele-02-2023