Hydroxyethyl cellulose (HEC) ke bosehla bo bosoeu kapa bo bobebe, bo se nang monko, bo se nang chefo kapa bo tiileng. E entsoe ka lithara tse tala tsa k'hothone kapa makhasi a hloekisitsoeng a kolobisitsoeng ka 30% ea mokelikeli oa caustic soda. Ka mor'a halofo ea hora, e ntšoa 'me e hatelloa. Penya ho fihlela karo-karolelano ea metsi a alkaline e fihla ho 1: 2.8, ebe o silakanya. E hlophisitsoe ke etherification reaction 'me ke ea li-non-ionic soluble cellulose ethers. Hydroxyethyl cellulose ke setenya sa bohlokoa sa pente ea latex. Ha re shebeng mokhoa oa ho sebelisa hydroxyethyl cellulose HEC penteng ea latex le litemoso.
1. Ho hlomelloa ka joala ba 'mè bakeng sa tšebeliso: qala ka ho sebelisa hydroxyethyl cellulose HEC ho lokisetsa joala ba' mè ka bongata bo phahameng, ebe u bo 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 2; 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.
2. Eketsa ka ho toba nakong ea tlhahiso: mokhoa ona ke o bonolo ka ho fetisisa 'me o nka nako e khutšoanyane. Kenya metsi a hloekileng ka nkhong e kholo e nang le motsoako o phahameng oa ho kuta. Qala ho sisinya o sa khaotse ka lebelo le tlaase 'me butle-butle u sefa hydroxyethyl cellulose ka har'a tharollo ka ho lekana. Tsoela pele ho hlohlelletsa ho fihlela likaroloana tsohle li kolobile. Ebe u eketsa li-preservatives le li-additives tse fapaneng. Tse kang li-pigments, lithuso tsa ho qhala, metsi a ammonia, joalo-joalo Hlohlelletsa ho fihlela hydroxyethyl cellulose HEC e qhibiliha ka ho feletseng (viscosity ea tharollo e eketseha ka ho hlakileng) ebe o eketsa likarolo tse ling ka mokhoa oa ho itšoara.
Kaha hydroxyethyl cellulose HEC e phekotsoeng ka holim'a metsi ke phofo kapa fibrous solid, ha o lokisa joala ba 'mè oa hydroxyethyl cellulose, ela hloko lintlha tse latelang:
(1) Ha u sebelisa high-viscosity hydroxyethyl cellulose HEC, 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.
(2) Pele le ka mor'a ho eketsa hydroxyethyl cellulose HEC, e tlameha ho tsosoa ka ho tsoelang pele ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng.
(3) Ka hohle kamoo ho ka khonehang, eketsa moemeli oa antifungal esale pele.
(4) Mocheso oa metsi le pH boleng ba metsi li na le kamano e totobetseng le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa.
(5) Se ke oa kenya lintho tse ling tsa alkaline motsoakong pele phofo ea hydroxyethyl cellulose e kolobisoa ka metsi. Ho phahamisa pH ka mor'a ho koloba ho tla thusa ho qhibiliha.
(6) E tlameha ho sefshoa butle-butle ka har'a tanka e kopanyang, 'me u se ke ua eketsa bongata kapa ua eketsa ka ho toba cellulose ea hydroxyethyl e entseng makukuno le libolo ka har'a tanka ea motsoako.
Lintlha tsa bohlokoa tse amang viscosity ea pente ea latex:
(1) Ho bola ha motenya ke likokoana-hloko.
(2) Ts'ebetsong ea ho etsa pente, hore na tatellano ea mehato ea ho eketsa thickener e loketse.
(3) Hore na palo ea activator ea holim'a metsi le metsi a sebelisitsoeng ka foromo ea pente e nepahetse.
(4) Karo-karolelano ea palo ea li-thickeners tse ling tsa tlhaho ho palo ea hydroxyethyl cellulose ha ho etsoa pente.
(5) Ha latex e thehoa, litaba tsa li-catalyst tse setseng le li-oxide tse ling.
(6) Mocheso o phahame haholo nakong ea ho hasana ka lebaka la ho sisinyeha ho feteletseng.
(7) Ha lipululana tsa moea li ntse li le ngata penteng, li-viscosity li phahame.
Viscosity ea hydroxyethyl cellulose HEC e fetoha hanyane ka har'a pH ea 2-12, empa viscosity e fokotseha ho feta sebaka sena. E na le thepa ea ho tiisa, ho emisa, ho tlama, emulsifying, ho qhalakanya, ho boloka mongobo le ho sireletsa colloid. Litharollo ka mekhahlelo e fapaneng ea viscosity li ka lokisoa. E sa tsitsang tlas'a mocheso o tloaelehileng le khatello, qoba mongobo, mocheso le mocheso o phahameng, 'me e na le ho qhibiliha ha letsoai ka mokhoa o ikhethang ho dielectrics,' me tharollo ea eona e nang le metsi e lumelloa ho ba le letsoai le phahameng le ho lula le tsitsitse.
Nako ea poso: Apr-01-2023