Hydroxyethyl cellulose (HEC), 'mala o mosehla o mosoeu kapa o bobebe, o sa nkhang hamonate, o se nang chefo o nang le fibrous kapa powdery solid, o lokiselitsoeng ke etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin), e leng ea mofuta oa Nonionic soluble cellulose ethers. Hobane HEC e na le thepa e ntle ea ho tiisa, ho emisa, ho qhalakanya, emulsifying, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka li-colloid tse sireletsang, e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana le lijo, masela, ho etsa pampiri le li-polymers. Polymerization le likarolo tse ling.
Ka mor'a hore hydroxyethyl cellulose e kopane le pente e thehiloeng metsing?
Joalo ka sehlahisoa se seng sa ionic, hydroxyethyl cellulose e na le lintho tse latelang ho kenyelletsa ho tenya, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho qhalakanya, ho boloka metsi le ho fana ka li-colloid tse sireletsang:
HEC e qhibiliha ka metsing a chesang kapa a batang, 'me ha e chese ka mocheso o phahameng kapa ho belisoa, ho etsa hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, hammoho le gelling e sa chesang;
Bokhoni ba ho boloka metsi bo habeli ho feta ba methyl cellulose, 'me bo 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 ea electrolyte e phahameng haholo.
Mokhoa oa ho sebelisa hydroxyethyl cellulose?
Eketsa ka ho toba nakong ea tlhahiso - mokhoa ona o bonolo ka ho fetisisa 'me o nka nako e fokolang:
Qala ho sisinya ka lebelo le tlase 'me butle-butle sefa hydroxyethyl cellulose ka ho lekana ka har'a tharollo 'me u tsoele pele ho sisinya ho fihlela likaroloana tsohle li kolobisitsoe. Ebe u eketsa li-preservatives le li-additives tse fapaneng. Tse kang li-pigments, lithuso tsa ho qhalakanya, 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 foromo ho phethahatsa karabelo.
Ho hlomelloa ka joala ba 'm'e
Ke ho lokisetsa joala ba 'm'e ka motsoako o 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 Method 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 sebelisoa,' me e tsoele pele ho Hlohlelletsa ho fihlela e qhibiliha ka ho feletseng ka tharollo ea viscous. Leha ho le joalo, ho lokela ho hlokomeloa hore moriana oa antifungal o tlameha ho eketsoa ho joala ba 'mè kapele kamoo ho ka khonehang.
Litlhahiso tse molemo:
Kaha hydroxyethyl cellulose e entsoeng ka holim'a metsi e na le phofo kapa fibrous solid, ha u lokisetsa joala ba 'mè oa hydroxyethyl cellulose, u hopotsa ho ela hloko lintlha tse latelang:
Pele le ka mor'a ho eketsa hydroxyethyl cellulose, e tlameha ho bolokoa e tsosoa ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng;
E tlameha ho sefshoa ka har'a moqomo oa ho kopanya butle-butle, 'me u se ke ua kopanya ka ho toba li-lumps kapa spheroids le hydroxyethyl cellulose ka har'a moqomo o kopanyang;
Mocheso oa metsi le pH ea metsi li na le kamano e kholo le ho qhibiliha ha hydroxyethyl cellulose, kahoo ho lokela ho lebisoa tlhokomelo e khethehileng ho eona;
U se ke ua eketsa lintho tse ling tsa alkaline motsoako pele hohydroxyethyl cellulosephofo e kolobisitsoe ka metsi. Ho phahamisa boleng ba pH kamora ho koloba ho tla thusa ho qhala;
Ka hohle kamoo ho ka khonehang, eketsa moemeli oa antifungal 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 thata ho sebetsana le bona.
Nako ea poso: Apr-28-2024