Hydroxyethyl cellulose (HEC) ke motsoako o mosweu kapa o mosehla o bobebe, o se nang monko, o se nang chefo kapa o nang le phofo. E entsoe ka li-linters tsa k'hothone tse tala kapa pulp e hloekisitsoeng e kolobisitsoeng ka 30% ea soda e metsi e bakang caustic. Kamora halofo ea hora, e ntšoa ebe e hatelloa. Hatella ho fihlela karolelano ea metsi a alkaline e fihla ho 1:2.8, ebe e silakanngoa. E lokisoa ka karabelo ea etherification 'me ke ea li-ether tsa cellulose tse qhibilihang tse seng tsa ionic. Hydroxyethyl cellulose ke setei sa bohlokoa penteng ea latex. A re tsepamiseng maikutlo mokhoeng oa ho sebelisa hydroxyethyl cellulose HEC penteng ea latex le mehato ea tlhokomelo.
1. E hlomelitsoe ka joala ba 'm'e bakeng sa tšebeliso: sebelisa hydroxyethyl cellulose HEC pele ho lokisa joala ba 'm'e bo nang le khatello e phahameng, ebe u bo eketsa sehlahisoa. Molemo oa mokhoa ona ke hore o na le ho tenyetseha ho hoholo 'me o ka eketsoa ka ho toba sehlahisoa se felileng, empa o tlameha ho bolokoa hantle. Mehato ea mokhoa ona e tšoana le boholo ba mehato e ho mokhoa oa 2; phapang ke hore ha ho hlokahale agitator e nang le ho kuta ho hoholo, 'me ke li-agitator tse ling feela tse nang le matla a lekaneng a ho boloka hydroxyethyl cellulose e hasantsoe ka ho lekana ka har'a tharollo tse ka tsoelang pele ntle le ho emisa Hlohlelletsa ho fihlela e qhibiliha ka ho feletseng ka tharollo e nang le viscous. Leha ho le joalo, ho lokela ho hlokomeloa hore fungicide e tlameha ho eketsoa ho joala ba 'm'e kapele kamoo ho ka khonehang.
2. Kenya ka ho toba nakong ea tlhahiso: mokhoa ona ke o bonolo ka ho fetisisa 'me o nka nako e khutšoanyane ka ho fetisisa. Kenya metsi a hloekileng ka baketeng e kholo e nang le motsoako o matla oa ho shapa. Qala ho hlohlelletsa ka lebelo le tlase 'me butle-butle u sefe hydroxyethyl cellulose ka har'a tharollo ka ho lekana. Tsoela pele ho hlohlelletsa ho fihlela likaroloana tsohle li kolobisitsoe. Ebe u eketsa lintho tse bolokang le lintho tse ling tse eketsang. Tse kang li-pigment, li-dispersing aids, metsi a ammonia, jj. Hlohlelletsa ho fihlela hydroxyethyl cellulose HEC eohle e qhibilihile ka botlalo (ho hlaka ha tharollo hoa eketseha) ebe u eketsa likarolo tse ling foromong ea karabelo.
Kaha HEC e phekotsoeng ka holim'a metsi e na le phofo kapa fibrous solid, ha o lokisa hydroxyethyl cellulose mother liquor, ela hloko lintlha tse latelang:
(1) Ha o sebedisa HEC e nang le viscosity e phahameng ya hydroxyethyl cellulose, bongata ba jwala ba mme ha boa lokela ho feta 2.5-3% (ka boima), ho seng jwalo jwala ba mme bo tla ba thata ho bo sebetsana.
(2) Pele le ka mora ho eketsa hydroxyethyl cellulose HEC, e lokela ho hlohlelletsoa khafetsa ho fihlela tharollo e bonaletsa ka botlalo ebile e hlakile.
(3) Ka hohle kamoo ho ka khonehang, eketsa sebolaya-mafu esale pele.
(4) Mocheso oa metsi le boleng ba pH ba metsi li amana ka ho hlaka le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e lokela ho lefshoa.
(5) O se ke wa eketsa dintho tse ding tsa alkaline motswakong pele phofo ya hydroxyethyl cellulose e kolobiswa ka metsi. Ho phahamisa pH ka mora ho e kolobisa ho tla thusa ho qhibilihisa.
(6) E lokela ho sefshoa butle-butle ka tankeng ea ho kopanya, 'me u se ke ua eketsa bongata bo boholo kapa ua eketsa ka ho toba hydroxyethyl cellulose e entseng li-klips le libolo ka tankeng ea ho kopanya.
Mabaka a bohlokoa a amang ho hlaka ha pente ea latex:
(1) Ho senyeha ha sethibela-mafu ke dikokwana-hloko.
(2) Mokgweng wa ho etsa pente, na tatellano ya mehato ya ho eketsa setenya e loketse.
(3) Hore na bongata ba activator ea bokaholimo le metsi a sebelisitsoeng foromong ea pente li loketse.
(4) Karolelano ea bongata ba lintho tse ling tse teteaneng tsa tlhaho ho ea ka bongata ba hydroxyethyl cellulose e entsoeng ka pente.
(5) Ha latex e thehoa, dikahare tsa di-catalyst tse setseng le di-oxide tse ding di a fumaneha.
(6) Mocheso o phahame haholo nakong ea ho hasana ka lebaka la ho hlohlelletsa ho feteletseng.
(7) Ha dipululana tsa moya di ntse di le ngata penteng, viscosity e ba e phahameng.
Viscosity ea hydroxyethyl cellulose HEC e fetoha hanyane ka har'a pH ea 2-12, empa viscosity ea fokotseha ka nģ'ane ho sebaka sena. E na le litšobotsi tsa ho teteana, ho emisa, ho tlama, ho kopanya, ho hasanya, ho boloka mongobo le ho sireletsa colloid. Litharollo tse fapaneng tsa viscosity li ka lokisoa. Ha li tsitse tlas'a mocheso o tloaelehileng le khatello, qoba mongobo, mocheso le mocheso o phahameng, 'me li na le ho qhibiliha ha letsoai ho dielectric tse ntle ka ho fetisisa, 'me tharollo ea eona ea metsi e lumelloa ho ba le mahloriso a mangata a letsoai 'me e lula e tsitsitse.
Nako ea poso: Mmesa-01-2023