Ngophuhliso kunye nokusetyenziswa kwepeyinti ye-latex esekelwe emanzini, ukhetho lwe-latex yepeyinti yepeyinti iyahluka.Ukulungelelaniswa kwe-rheology kunye nokulawulwa kwe-viscosity yepende ye-latex ukusuka kumazinga aphezulu, aphakathi kunye naphantsi.Ukukhethwa kunye nokusetyenziswa kwe-thickeners kwiipende ze-latex kunye nepeyinti ye-latex kwiinkqubo ezahlukeneyo ze-emulsion (i-acrylic ecocekileyo, i-styrene-acrylic, njl.).
Indima ephambili ye-thickeners kwiipende ze-latex, apho i-rheology yenye yezinto ezibalulekileyo ezenza ukubonakala kunye nokusebenza kweefilimu zepeyinti.Kwakhona qwalasela umphumo we-viscosity kwimvula ye-pigment, ukuxubha, ukulinganisa, ukugcwala kwefilimu yepeyinti, kunye ne-sag yefilimu yomhlaba ngexesha lokuxubha ngokuthe nkqo.Le yimiba esemgangathweni abavelisi bahlala beyiqwalasela.
Ukubunjwa kwengubo kuchaphazela i-rheology yepeyinti ye-latex, kwaye i-viscosity inokulungiswa ngokuguqula ukuxinwa kwe-emulsion kunye nokuxinwa kwezinye izinto eziqinileyo ezihlakazwe kwipeyinti ye-latex.Nangona kunjalo, uluhlu lohlengahlengiso lulinganiselwe kwaye iindleko ziphezulu.I-viscosity yepeyinti ye-latex ilungiswa ikakhulu ngama-thickeners.Izityebi ezisetyenziswa ngokuqhelekileyo zezi: i-cellulose ether thickeners, i-alkali-swellable polyacrylic acid emulsion thickeners, i-non-ionic associative polyurethane thickeners, njl njl. I-Hydroxyethyl cellulose ether thickeners inyusa ubukhulu becala i-shear viscosity ephakathi nesezantsi yepeyinti yelatex, kwaye ine-thixotropy enkulu.Ixabiso lesivuno likhulu.Ikhonkco eliphambili le-hydrophobic ye-cellulose thickener idibaniswa neemolekyuli zamanzi ezijikelezayo ngokusebenzisa i-hydrogen bonding, eyandisa umthamo we-polymer ngokwayo.Isithuba sokuhamba ngokukhululekileyo kwamasuntswana sincitshisiwe.I-viscosity yenkqubo yanda, kwaye isakhiwo sothungelwano esidibeneyo senziwe phakathi kwe-pigment kunye neengqungquthela ze-emulsion.Ukwahlula ii-pigments komnye nomnye, iinqununu ze-emulsion azifane zidsorb.
Ixesha lokuposa: Nov-02-2022