Ngokuthuthukiswa nokusetshenziswa kopende we-latex osekelwe emanzini, ukukhetha i-thickener yopende we-latex kuyahlukahluka. Ukulungiswa kwe-rheology kanye nokulawulwa kwe-viscosity kopende we-latex kusuka kumazinga aphezulu, aphakathi naphansi okucheba. Ukukhethwa nokusetshenziswa kwe-thickeners yopende we-latex kanye nopende we-latex ezinhlelweni ezahlukene ze-emulsion (i-acrylic emsulwa, i-styrene-acrylic, njll.).
Indima eyinhloko yezithisi ezicijile kupende we-latex, lapho i-rheology ingenye yezinto ezibalulekile ezakha ukubukeka nokusebenza kwamafilimu opende. Cabanga futhi ngomphumela we-viscosity ekunisweni kwe-pigment, ukuxubha, ukulingana, ukugcwala kwefilimu yopende, kanye nokugoba kwefilimu engaphezulu ngesikhathi sokuxubha okuqondile. Lezi yizinkinga zekhwalithi abakhiqizi abavame ukuzicabangela.
Ukwakheka kwengubo kuthinta i-rheology yepende le-latex, futhi i-viscosity ingalungiswa ngokushintsha ukuhlushwa kwe-emulsion kanye nokuhlushwa kwezinye izinto eziqinile ezisakazeke kupende le-latex. Kodwa-ke, ububanzi bokulungiswa bunqunyelwe futhi izindleko ziphezulu. I-viscosity yepende le-latex ilungiswa kakhulu yi-thickeners. Izi-thickeners ezivame ukusetshenziswa yilezi: i-cellulose ether thickeners, i-alkali-swellable polyacrylic acid emulsion thickeners, i-non-ionic associative polyurethane thickeners, njll. I-Hydroxyethyl cellulose ether thickener ikhulisa kakhulu i-medium and low shear viscosity yepende le-latex, futhi ine-thixotropy enkulu. Inani lesivuno likhulu. I-hydrophobic main chain ye-cellulose thickener ihlotshaniswa nama-molecule amanzi azungezile ngokubopha i-hydrogen, okwandisa ivolumu yoketshezi lwe-polymer uqobo. Isikhala sokuhamba ngokukhululeka kwezinhlayiya sincishisiwe. I-viscosity yesistimu iyanda, futhi kwakheka isakhiwo senethiwekhi esixhumene phakathi kwe-pigment kanye nezinhlayiya ze-emulsion. Ukuze kuhlukaniswe imibala, izinhlayiya ze-emulsion azivamile ukumunca.
Isikhathi sokuthunyelwe: Novemba-02-2022