Hamwe n'iterambere n'ikoreshwa ry'irangi rya latex rishingiye ku mazi, amahitamo y'imashini igabanya ubushyuhe bw'irangi rya latex aratandukanye. Guhindura uburyo bwo kugenzura rheology no kugenzura ubushyuhe bw'irangi rya latex uhereye ku gipimo cyo hejuru, kiringaniye n'icyo hasi cyo gukata. Guhitamo no gukoresha imashini zigabanya ubushyuhe bw'irangi rya latex n'irangi rya latex mu buryo butandukanye bwa emulsion (acrylic pure, styrene-acrylic, nibindi).
Uruhare rw'ingenzi rw'ibirungo mu marangi ya latex, aho rheology ari kimwe mu bintu by'ingenzi bigize ishusho n'imikorere ya za firime z'irangi. Tekereza kandi ingaruka z'ubushyuhe ku mvura y'irangi, ubushobozi bwo koza, uburinganire, ubwiza bwa firime y'irangi, ndetse n'ubuso bw'ifirime mu gihe cyo koza iburyo. Ibi ni ibibazo by'ubuziranenge abakora bakunze kwitaho.
Imiterere y'ibara igira ingaruka ku miterere y'irangi rya latex, kandi ubukana bushobora guhindurwa hakoreshejwe guhindura ingano ya emulsion n'ingano y'ibindi bintu bikomeye bitandara mu irangi rya latex. Ariko, urwego rwo guhindura ni ruto kandi igiciro ni kinini. Ubukana bwa latex buhindurwa ahanini n'ibinini. Ibinini bikunze gukoreshwa ni: ibinini bya cellulose ether, ibinini bya polyacrylic acid emulsion, ibinini bya polyurethane bitagira ionic, nibindi. Ibinini bya ether bya Hydroxyethyl cellulose ether byongera ubukana buri hagati n'ubuke bw'irangi rya latex, kandi bifite thixotropy nini. Agaciro k'umusaruro ni kanini. Uruhererekane rw'ingenzi rwa hydrophobic rwa cellulose thickener rufitanye isano n'ibice by'amazi bikikije binyuze mu guhuza hydrogen, byongera ingano y'amazi ya polymer ubwayo. Umwanya wo kugenda kw'uduce uragabanuka. Ubukana bwa sisitemu buriyongera, kandi imiterere y'urusobe rw'amazi irakorwa hagati y'ibara n'uduce twa emulsion. Kugira ngo bitandukanye ibinini, uduce twa emulsion ntidukunze kwinjiza.
Igihe cyo kohereza: Ugushyingo-02-2022