Hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) ke 'mala o mosehla o mosoeu kapa o bobebe, o sa nkhang hamonate, o se nang chefo kapa oa phofo o lokisitsoeng ke etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin). 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. Hydroxyethyl cellulose ha e tsitsa ka mocheso o tloaelehileng le khatello, e qoba mongobo, mocheso le mocheso o phahameng, 'me e na le ho qhibiliha ha letsoai ka mokhoa o ikhethang bakeng sa dielectrics. Tharollo ea eona ea metsi e lumelloa ho ba le letsoai le phahameng 'me le tsitsitse.

Litaelo
Kopana ka kotloloho tlhahiso

1. Kenya metsi a hloekileng ka nkhong e kholo e nang le blender e phahameng ea ho kuta.

2. Qala ho sisinyeha ka ho tsoelang pele ka lebelo le tlaase 'me butle-butle sieve cellulose ea hydroxyethyl ka har'a tharollo ka mokhoa o ts'oanang.

3. Tsoela pele ho sisinya ho fihlela likaroloana tsohle li kolobisitsoe.

4. Ebe u eketsa li-antifungal agents, li-additives tsa alkaline tse kang li-pigments, lithuso tse qhalakang, metsi a ammonia.

5. Hlohlelletsa ho fihlela cellulose eohle ea hydroxyethyl e qhibiliha ka ho feletseng (viscosity ea tharollo e eketseha haholo) pele u eketsa likarolo tse ling ka foromo, 'me u sila ho fihlela sehlahisoa se felile.

Ho hlomelloa ka joala ba 'm'e

Mokhoa ona ke oa ho qala ka ho lokisetsa joala ba 'mè bo nang le khatello e phahameng, ebe o e eketsa ho pente ea latex. Molemo oa mokhoa ona ke hore o na le phetoho e kholoanyane 'me e ka kenyelletsoa ka ho toba penteng e phethiloeng, empa e lokela ho bolokoa hantle. Mehato e tšoana le mehato ea 1-4 ka mokhoa oa 1, ntle le hore ho tsosoa ho phahameng ha ho hlokahale ho qhibiliha ka ho feletseng ka tharollo ea viscous.

E-ba hlokolosi
Kaha hydroxyethyl cellulose e entsoeng ka holimo ke phofo kapa cellulose e tiileng, ho bonolo ho sebetsana le ho qhibiliha ka metsing hafeela litaba tse latelang li hlokomeloa.

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.

2. E tlameha ho sefshoa ka har'a moqomo oa ho kopanya butle-butle. U se ke ua eketsa ka ho toba cellulose ea hydroxyethyl e entsoeng ka makukuno kapa libolo ka har'a barrel e kopanyang ka bongata kapa ka ho toba.

3. Mocheso oa metsi le pH ea metsi li na le kamano e kholo le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa ho eona.

4. Le ka mohla u se ke ua kenya lintho tse ling tsa alkaline motsoakong pele phofo ea hydroxyethyl cellulose e futhumatsoa ke metsi. Ho phahamisa boleng ba PH kamora ho futhumala hoa thusa bakeng sa ho qhibiliha.

5. Ka hohle kamoo ho ka khonehang, eketsa moemeli oa antifungal kapele kamoo ho ka khonehang.

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 thata ho sebetsa. Hydroxyethyl cellulose ka mor'a ho phekoloa hangata ha ho bonolo ho etsa li-tumps kapa li-sphere, 'me e ke ke ea theha li-colloid tse chitja tse sa tsitsang ka mor'a ho eketsa metsi.