Focus on Cellulose ethers

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Mefuta le litšobotsi tse teteaneng

Li-cellulosic thickeners li na le ts'ebetso e phahameng ea ho tiisa, haholo-holo bakeng sa ho teteka ha karolo ea metsi; li na le lithibelo tse fokolang tsa ho etsa litlolo tsa ho roala 'me li sebelisoa haholo; li ka sebelisoa ka mefuta e mengata ea pH. Leha ho le joalo, ho na le bofokoli bo kang boemo bo bobe, ho phatloha ho eketsehileng nakong ea ho roala lirolara, botsitso bo fokolang, le ho senyeha habonolo ha likokoana-hloko. Hobane e na le viscosity e tlase tlas'a ho kuta e phahameng le viscosity e phahameng tlas'a ho kuta e tsitsitseng le e tlaase, viscosity e eketseha ka potlako ka mor'a ho roala, e ka thibelang ho theoha, empa ka lehlakoreng le leng, e baka boemo bo bobe. Liphuputso li bontšitse hore ha boima ba limolek'hule bo ntse bo eketseha, ho phatloha ha pente ea latex le hona hoa eketseha. Li-cellulosic thickeners li tloaetse ho phatloha ka lebaka la boima ba tsona bo boholo ba limolek'hule. 'Me hobane cellulose e na le hydrophilic, e tla fokotsa ho hanyetsa metsi ha filimi ea pente.

cellulosic thickener

Li-thickeners tsa polyacrylic acid li na le thepa e matla ea ho tiisa le ho theola, le botsitso bo botle ba likokoana-hloko, empa li na le maikutlo a pH 'me ha li na metsi a fokolang.

polyacrylic thickener

Sebopeho sa associative sa associative polyurethane thickener se senyeha tlas'a ketso ea matla a ho kuta, 'me viscosity ea fokotseha. Ha matla a ho kuta a nyamela, viscosity e ka tsosolosoa, e ka thibelang ketsahalo ea ho senyeha ha mosebetsi oa kaho. 'Me ho hlaphoheloa ha eona ha viscosity ho na le hysteresis e itseng, e leng se loketseng ho lekanngoa ha filimi ea ho roala. Boima ba molek'hule (likete ho isa ho mashome a likete) tsa polyurethane thickeners e tlase haholo ho feta boima ba molek'hule (tse makholo a likete ho ea ho limilione) tsa mefuta e 'meli ea pele ea li-thickeners,' me e ke ke ea khothalletsa ho phatloha. Limolek'hule tsa polyurethane thickener li na le lihlopha tsa hydrophilic le hydrophobic, 'me lihlopha tsa hydrophobic li na le kamano e matla le matrix ea filimi ea ho roala, e ka ntlafatsang ho hanyetsa metsi ha filimi ea ho roala.


Nako ea poso: Mar-24-2023
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