Ndi chitukuko ndi kugwiritsa ntchito utoto wa latex wopangidwa ndi madzi, kusankha kwa utoto wa latex kumakhala kosiyanasiyana.Kusintha kwa rheology ndi viscosity control ya utoto wa latex kuchokera kumitengo yapamwamba, yapakatikati komanso yotsika.Kusankha ndi kugwiritsa ntchito zokhuthala za utoto wa latex ndi utoto wa latex m'machitidwe osiyanasiyana a emulsion (akriliki wangwiro, styrene-acrylic, etc.).
Udindo waukulu wa thickeners mu utoto wa latex, momwe rheology ndi chimodzi mwazinthu zofunika zomwe zimapanga maonekedwe ndi machitidwe a mafilimu a utoto.Komanso ganizirani zotsatira za mamasukidwe akayendedwe pa pigment mpweya, brushability, kusanja, chidzalo cha utoto filimu, ndi sag wa pamwamba filimu pa ofukula brushing.Izi ndizovuta zomwe opanga nthawi zambiri amaziganizira.
The zikuchokera ❖ kuyanika zimakhudza rheology wa utoto utoto, ndi mamasukidwe akayendedwe akhoza kusinthidwa ndi kusintha ndende ya emulsion ndi ndende ya zinthu zina zolimba omwazika mu latex utoto.Komabe, kusintha kosinthika kumakhala kochepa ndipo mtengo wake ndi wapamwamba.Kukhuthala kwa utoto wa latex kumasinthidwa makamaka ndi thickeners.Ambiri ntchito thickeners ndi: mapadi etha thickeners, alkali-swellable polyacrylic asidi emulsion thickeners, sanali ionic associative polyurethane thickeners, etc. Hydroxyethyl mapadi efa thickener makamaka kumawonjezera sing'anga ndi otsika kukameta ubweya kukhuthala kwa latex utoto, ndipo ali ndi thixotropy lalikulu.Mtengo wa zokolola ndi waukulu.Unyolo waukulu wa hydrophobic wa thickener wa cellulose umalumikizidwa ndi mamolekyu amadzi ozungulira kudzera pa hydrogen bonding, zomwe zimawonjezera kuchuluka kwamadzimadzi a polima palokha.Danga la kuyenda kwaulere kwa tinthu tating'ono tachepa.The mamasukidwe akayendedwe a dongosolo chiwonjezeke, ndi mtanda zogwirizana dongosolo maukonde aumbike pakati pigment ndi emulsion particles.Kulekanitsa inki wina ndi mzake, ndi emulsion particles kawirikawiri adsorb.
Nthawi yotumiza: Nov-02-2022