Imikhiqizo ye-cellulose itholakala ku-pulp yemvelo kakotini noma i-pulp yokhuni nge-etherification.Imikhiqizo ehlukene ye-cellulose isebenzisa ama-etherifying ahlukene.I-Hypromellose HPMC isebenzisa ezinye izinhlobo zezinto ezenza i-etherifying (i-chloroform ne-1,2-epoxypropane) , kuyilapho i-hydroxyethyl cellulose HEC isebenzisa i-Oxirane etherifying agents.I-Hydroxyethyl cellulose ingasetshenziswa njenge-thickener kupende wamatshe wangempela nopende we-latex.Ngenxa yenani elikhulu le-aggregate, amandla adonsela phansi athile, imvula, idinga ukwengeza i-ejenti yokuqina ukuze ikhulise i-viscosity yayo, ukuze ihlangabezane nezidingo ze-viscosity yesifutho sokwakha, futhi ithuthukise ukuqina kwayo kwesitoreji, kanye nokuzuza amandla athile.Ukuze kuzuzwe amandla amahle, ukumelana kwamanzi okuhle kanye nokumelana nesimo sezulu, ukukhethwa kwezinto ezingavuthiwe kanye nomklamo wokubunjwa kubaluleke kakhulu.
Ngokuvamile, inani le-emulsion yepende yangempela yamatshe esezingeni eliphakeme lizoba phezulu.Isibonelo, ithani lopende lwamatshe langempela lingase libe ne-300 kg ye-emulsion ye-acrylic ehlanzekile kanye ne-650 kg yesihlabathi samatshe esinemibala yemvelo.Lapho okuqukethwe okuqinile kwe-emulsion kungu-50% , umthamo we-emulsion engu-300 kg ngemva kokumisa cishe amalitha angu-150, u-650 Kg wesihlabathi cishe u-228 amalitha.Okusho ukuthi, ngalesi sikhathi i-PVC (i-pigment volume concentration) yopende lwamatshe wangempela ngu-60% , ngoba izinhlayiya zesihlabathi esinemibala zikhulu futhi zingavamile ngokuma, ngaphansi kwesimo sokusatshalaliswa kosayizi wezinhlayiyana ezithile, ngemva kokumisa. upende wamatshe wangempela ungase ube ku-CPVC (i-pigment ebalulekile yevolumu yokuhlushwa) mayelana.Ukuze kuqiniswe, uma kukhethwa i-viscosity efanele ye-cellulose, ifilimu ecishe iphelele futhi eminyene ingakhiwa ukuze ihlangabezane nezidingo ezintathu ezinkulu zokusebenza zopende wamatshe wangempela.Uma okuqukethwe kwe-emulsion kuphansi, kunconywa ukusebenzisa i-viscosity ephakeme ye-cellulose njenge-thickener (isb. i-viscosity engu-100,000), ikakhulukazi ngemva kokukhuphuka kwentengo ye-cellulose, enganciphisa inani le-cellulose esetshenzisiwe, futhi ingavumela ukusebenza. kapende wamatshe wangempela uphakeme kakhulu.Abanye abakhiqizi bopende bangempela bamanani aphansi bafake i-hypromellose esikhundleni se-hydroxyethyl cellulose ngenxa yezindleko nokunye okucatshangelwayo.Uma kuqhathaniswa nezinhlobo ezimbili ze-cellulose, i-hydroxyethyl cellulose inamandla angcono okubamba amanzi, ayilahlekelwa amandla okubamba amanzi ngenxa yejeli ekushiseni okuphezulu, futhi inokumelana okuthile nokukhunta.Ukuze usebenze, kunconywa ukusebenzisa i-100,000 viscosity hydroxyethyl cellulose njengokuqina kopende wamatshe wangempela.
Isikhathi sokuthumela: Jul-24-2023