Hydroxyethyl Cellulose (HEC) ke polima e qhibilihang ka metsing e se nang ionic e sebelisoang haholo ho koahela, litlolo, meriana, lijo, ho etsa pampiri, ho cheka oli le masimo a mang a indasteri. Ke motsoako oa cellulose ether o fumanoang ka etherification ea cellulose, moo hydroxyethyl e nkelang karolo ea lihlopha tsa hydroxyl tsa cellulose. Thepa ea 'mele le ea lik'hemik'hale ea hydroxyethyl cellulose e etsa hore e be e' ngoe ea likarolo tsa bohlokoa tsa li-thickeners, li-gelling agents, li-emulsifiers le li-stabilizers.
Sebaka se belang sa hydroxyethyl cellulose
Hydroxyethyl cellulose ke polymer e phahameng ea molek'hule e nang le boima bo boholo ba molek'hule, 'me ntlha ea eona e khethehileng ea ho bela ha ho bonolo ho e tseba joaloka ea metsoako e nyenyane ea limolek'hule. Lits'ebetsong tse sebetsang, lisebelisoa tse phahameng tsa limolek'hule tse kang hydroxyethyl cellulose ha li na sebaka se belang se hlakileng. Lebaka ke hore lintho tse joalo li tla bola nakong ea ho futhumatsa, ho e-na le ho fetoha ka ho toba ho tloha mokelikeli ho ea ho khase ka phetoho ea mohato joaloka lintho tse tloaelehileng tsa molek'hule. Ka hona, khopolo ea "boiling point" ea hydroxyethyl cellulose ha e sebetse.
Ka kakaretso, ha hydroxyethyl cellulose e futhumala ka mocheso o phahameng, e tla qala ho qhibiliha ka metsing kapa ho qhibiliha ha motsoako ho etsa tharollo ea colloidal, ebe ka mocheso o phahameng, ketane ea polymer e tla qala ho senya 'me qetellong e bola ka mocheso, e lokolla limolek'hule tse nyenyane tse kang metsi, carbon dioxide le lintho tse ling tse sa tsitsang ntle le ho etsa mokhoa o tloaelehileng oa ho belisa. Ka hona, hydroxyethyl cellulose ha e na sebaka se belang se hlakileng, empa mocheso oa ho bola, o fapaneng le boima ba molek'hule le tekanyo ea ho fetola. Ka kakaretso, mocheso oa ho bola oa hydroxyethyl cellulose hangata o ka holimo ho 200°C.
Thermal botsitso ba hydroxyethyl cellulose
Hydroxyethyl cellulose e na le botsitso bo botle ba lik'hemik'hale mochesong oa kamore, e khona ho mamella mefuta e itseng ea tikoloho ea asiti le alkali, 'me e na le ho hanyetsa mocheso o itseng. Leha ho le joalo, ha mocheso o phahame haholo, haholo-holo ha ho se na li-solvents kapa li-stabilizers tse ling, liketane tsa polymer li tla qala ho senya ka lebaka la ketso ea mocheso. Ts'ebetso ena ea ho senyeha ha mocheso ha e tsamaee le ho belisoa ho totobetseng, empa ho e-na le hoo ke ho robeha ha ketane butle-butle le karabelo ea ho felloa ke metsi 'meleng, ho lokolla lintho tse sa tsitsang' me qetellong ho siea lihlahisoa tsa carbonized.
Lits'ebetsong tsa indasteri, molemong oa ho qoba ho bola ho bakoang ke mocheso o phahameng, hydroxyethyl cellulose hangata ha e pepesehe tikolohong e fetang mocheso oa eona oa ho bola. Esita le lits'ebetsong tsa mocheso o phahameng (joalo ka tšebeliso ea maro a ho cheka sebakeng sa oli), hydroxyethyl cellulose hangata e sebelisoa hammoho le lisebelisoa tse ling ho matlafatsa botsitso ba eona ba mocheso.
Tšebeliso ea hydroxyethyl cellulose
Le hoja hydroxyethyl cellulose e se na ntlha e hlakileng ea ho bela, ho qhibiliha ha eona le thepa ea eona e teteaneng e etsa hore e sebelisoe haholo liindastering tse ngata. Ka mohlala:
Indasteri ea ho roala: hydroxyethyl cellulose e ka sebelisoa e le setenya ho thusa ho lokisa rheology ea ho roala, ho thibela pula le ho ntlafatsa boemo le botsitso ba ho roala.
Litlolo le lik'hemik'hale tsa letsatsi le letsatsi: Ke motsoako oa bohlokoa ho li-detergents tse ngata, lihlahisoa tsa tlhokomelo ea letlalo, li-shampoo le litlolo tsa meno, tse ka fanang ka sehlahisoa sa viscosity se nepahetseng, se mongobo le botsitso.
Indasteri ea meriana: Litokisetsong tsa meriana, hydroxyethyl cellulose e atisa ho sebelisoa ha ho etsoa matlapa le litlolo tse sa khaotseng ho laola sekhahla sa ho lokolloa ha lithethefatsi.
Indasteri ea lijo: Joalo ka setei, stabilizer le emulsifier, hydroxyethyl cellulose e boetse e sebelisoa lijong, haholo-holo ice cream, jelly le li-sauces.
Ho cheka oli: Ha ho cheka sebakeng sa oli, hydroxyethyl cellulose ke karolo ea bohlokoa ea mokelikeli oa ho cheka, o ka eketsang viscosity ea mokelikeli, ho tsitsisa lebota la seliba le ho fokotsa tahlehelo ea seretse.
Joaloka thepa ea polymer, hydroxyethyl cellulose ha e na ntlha e hlakileng ea ho bela hobane e senyeha ka mocheso o phahameng ho e-na le ntho e tloaelehileng ea ho belisa. Mocheso oa eona oa ho bola ha mocheso hangata o ka holimo ho 200 ° C, ho itšetlehile ka boima ba molek'hule le tekanyo ea ho fetola. Leha ho le joalo, selulose ea hydroxyethyl e sebelisoa haholo ho koaheloa, litlolo, meriana, lijo le peterole ka lebaka la thepa ea eona e ntle haholo ea ho tenya, ea gelling, e emulsifying le ho tsitsisa. Lits'ebetsong tsena, hangata e qojoa hore e se ke ea pepesetsoa mocheso o phahameng haholo ho netefatsa ts'ebetso ea eona le botsitso.
Nako ea poso: Oct-23-2024