Hydroxyethyl cellulose (HEC), e bosehla bo bosoeu kapa bo bobebe, bo se nang monko, bo se nang chefo kapa bo tiileng, bo lokisitsoeng ke karabelo ea etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), ke ea Nonionic soluble cellulose ethers. Kaha HEC e na le thepa e ntle ea ho teteka, ho emisa, ho qhalakanya, emulsifying, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka colloid e sireletsang, e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana, lijo, masela, ho etsa pampiri le polymerization ea polymerization. le masimo a mang.
Ka mor'a seboka sa hydroxyethyl cellulose le pente e thehiloeng metsing?
Joaloka sehlahisoa se se nang ionic, hydroxyethyl cellulose e na le lintho tse latelang ho phaella ho ho teteaneng, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho qhalakanngoa, ho boloka metsi le ho fana ka colloid e sireletsang:
HEC e qhibiliha ka metsing a chesang kapa a batang, mocheso o phahameng kapa o belang ntle le pula, e le hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, le gelation e sa chesang;
Matla a ho boloka metsi a phahame habeli ho feta a methyl cellulose, 'me a na le taolo e ntle ea phallo;
Ha ho bapisoa le methyl cellulose e tsejoang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalakanngoa ba HEC ke bona bo bobe ka ho fetisisa, empa matla a tšireletso a colloid ke a matla ka ho fetisisa;
Ha e na ionic 'me e ka phela hammoho le mefuta e mengata e mengata ea li-polymers tse qhibilihang metsing, li-surfactants le matsoai. Ke colloidal thickener e babatsehang bakeng sa tharollo e nang le li-electrolyte tse phahameng haholo.
Mokhoa oa ho sebelisa hydroxyethyl cellulose?
Eketsa ka ho toba nakong ea tlhahiso - mokhoa ona ke o bonolo ka ho fetisisa 'me o nka nako e khutšoanyane:
Qala ho sisinya u sa khaotse ka lebelo le tlaase 'me butle-butle u sefa hydroxyethyl cellulose ka ho lekana ka har'a tharollo 'me u tsoele pele ho sisinyeha ho fihlela likaroloana tsohle li kolobile. Ebe u eketsa li-preservatives le li-additives tse fapaneng. Tse kang li-pigments, lithuso tsa ho qhalakanya, metsi a ammonia, joalo-joalo Hlohlelletsa ho fihlela cellulose eohle ea hydroxyethyl e qhibiliha ka ho feletseng (viscosity ea tharollo e eketseha haholo) pele o eketsa likarolo tse ling ka mokhoa oa ho itšoara.
Ho hlomelloa ka joala ba 'm'e
Ke ho lokisa joala ba 'm'e ka khatello e phahameng pele, ebe o e eketsa sehlahisoa. Molemo oa mokhoa ona ke hore o na le phetoho e kholoanyane 'me e ka kenyelletsoa ka ho toba sehlahisoa se phethiloeng, empa se tlameha ho bolokoa hantle. Mehato ea mokhoa ona e tšoana le mehato e mengata ea mokhoa oa 1; phapang ke hore ha ho hlokahale hore ho be le agitator e phahameng, 'me ke li-agitator tse ling feela tse nang le matla a lekaneng a ho boloka cellulose ea hydroxyethyl ka mokhoa o ts'oanang e qhalakantsoeng ka tharollo e ka tsoela pele ntle le ho emisa Ho hlohlelletsa ho fihlela e qhibiliha ka ho feletseng ka tharollo ea viscous. Leha ho le joalo, ho lokela ho hlokomeloa hore sebolaea-khuru se tlameha ho eketsoa ho joala ba 'm'e kapele kamoo ho ka khonehang.
Litlhahiso tse molemo:
Kaha selulose ea hydroxyethyl e entsoeng ka holim'a metsi ke phofo kapa fibrous solid, ha u lokisetsa joala ba 'mè oa hydroxyethyl cellulose, u hopotsa hore u ele hloko lintlha tse latelang:
Pele le ka mor'a ho eketsa hydroxyethyl cellulose, e tlameha ho tsosoa ka ho tsoelang pele ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng;
E tlameha ho hloekisoa butle-butle ka har'a tanka ea ho kopanya, 'me u se ke ua e kenya ka ho toba ka tanka ea ho kopanya ka bongata kapa ka maqeba, libolo le hydroxyethyl cellulose;
Mocheso oa metsi le boleng ba PH metsing li na le kamano e totobetseng le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa;
Se ke oa kenya lintho tse ling tsa alkaline motsoakong pele phofo ea hydroxyethyl cellulose e kolobisoa ka metsi. Ho phahamisa boleng ba pH kamora ho koloba ho tla thusa ho qhala;
Ka hohle kamoo ho ka khonehang, eketsa moemeli oa anti-mold esale pele;
Ha u sebelisa high-viscosity hydroxyethyl cellulose, mahloriso a joala ba 'mè ha aa lokela ho ba holimo ho 2.5-3% (ka boima ba' mele), ho seng joalo joala ba 'mè bo tla ba thata ho sebetsana le bona.
Nako ea poso: Dec-23-2022