Hydroxyethyl cellulose (HEC)ke 'mala o mosehla o mosoeu kapa o bobebe, o sa nkhang hamonate, o se nang chefo kapa o se nang chefo, o lokisitsoeng ke karabelo ea etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin). Nonionic soluble cellulose ethers. Ntle le ho tiisa, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho hasana, ho boloka metsi le ho fana ka colloid e sireletsang, e na le thepa e latelang:
1. HEC e qhibiliha ka metsing a chesang kapa a batang, mocheso o phahameng kapa ho belisa ntle le pula, e le hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, le gelation e se nang mocheso;
2. Ha e na ionic 'me e ka phela hammoho le mefuta e mengata e mengata ea li-polymers tse qhibilihang ka metsing, li-surfactants, le letsoai. Ke colloidal thickener e babatsehang bakeng sa tharollo ea electrolyte e phahameng haholo;
3. Matla a ho boloka metsi a phahame ka makhetlo a mabeli ho feta a methyl cellulose, 'me a na le taolo e ntle ea ho phalla.
4. Ha ho bapisoa le methyl cellulose e tsejoang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalakanngoa ba HEC ke bo bobe ka ho fetisisa, empa matla a tšireletso a colloid a matla ka ho fetisisa. Ka lebaka la thepa ea eona e ntle ea ho teteka, ho emisa, ho qhalakanya, emulsifying, ho khomarela, ho etsa filimi, ho sireletsa mongobo le ho fana ka colloid e sireletsang, HEC e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana, lijo, masela, pampiri le polymerization. le masimo a mang.
Mehato ya tlhokomelo:
Kaha hydroxyethyl cellulose e entsoeng ka holim'a metsi ke phofo kapa cellulose e tiileng, ho bonolo ho e tšoara le ho e qhaqha ka metsing hafeela lintho tse latelang li lebisoa tlhokomelo ho tsona. the
1. 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. the
2. E tlameha ho kenngoa butle-butle ka har'a tanka ea ho kopanya, u se ke ua eketsa ka ho toba palo e kholo ea hydroxyethyl cellulose kapa hydroxyethyl cellulose e entseng makukuno le libolo ka har'a tanka ea ho kopanya. the
3. 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 tlameha ho lefshoa. the
4. U se ke ua kenya lintho tse ling tsa alkaline motsoako pele phofo ea hydroxyethyl cellulose e futhumala ka metsing. Ho phahamisa boleng ba PH kamora ho futhumala ho tla thusa ho qhibiliha. the
5. Ka hohle kamoo ho ka khonehang, eketsa moemeli oa anti-fungal kapele kamoo ho ka khonehang. the
6. Ha u sebelisa high-viscosity hydroxyethyl cellulose, mahloriso a joala ba 'mè ha aa lokela ho ba holimo ho 2.5-3%, ho seng joalo joala ba' mè bo tla ba thata ho sebetsana le bona. Hydroxyethyl cellulose ka mor'a ho phekoloa hangata ha e bonolo ho etsa makukuno kapa lilika-likoe, ebile e ke ke ea theha li-colloid tse chitja tse sa tsitsang ka mor'a ho eketsa metsi.
Nako ea poso: Dec-27-2022