I-Hydroxyethyl Cellulose (HEC) yinto eqhelekileyo yepolymer enyibilikayo emanzini esetyenziswa kakhulu kwipeyinti yelatex. Ayidlali nje indima ebalulekileyo ekuphuculeni ukusebenza kwemveliso, kodwa iphucula kakhulu amava esicelo kunye nomgangatho wefilimu yokugqibela yokugquma.
Iipropati zeHydroxyethyl Cellulose
I-Hydroxyethyl cellulose yi-nonionic cellulose ether eveliswa kwi-cellulose yendalo ngokuguqulwa kwe-etherification. Inokuqina kakuhle, ukumisa, ukusabalalisa kunye neempawu ze-emulsifying. Ezi zakhiwo zivumela i-HEC ukuba yenze i-colloids ezinzile kwizisombululo ezinamanzi kunye ne-viscosity ephezulu kunye neempawu ezintle ze-rheological. Ukongeza, isisombululo samanzi se-HEC sinokucaca kakuhle kunye nomthamo osebenzayo wokugcina amanzi. Ezi mpawu zenza ukuba isetyenziswe ngokubanzi kwiipende zelatex.
Indima kwipeyinti yelatex
ujiya
Njengomnye wezona zingqinisiso eziphambili zepeyinti ye-latex, owona msebenzi ubalulekileyo we-HEC kukunyusa i-viscosity yolwelo lwepeyinti. I-viscosity efanelekileyo ayinakuphucula kuphela ukuzinza kokugcinwa kwepeyinti ye-latex, kodwa nokuthintela imvula kunye ne-delamination. Ukongeza, i-viscosity efanelekileyo inceda ukulawula ukuthoba kunye nokuqinisekisa umgangatho olungileyo kunye nokugubungela ngexesha lokufaka isicelo, ngaloo ndlela ufumana ifilimu yokwambathisa efanayo.
ukuphuculwa kozinzo
I-HEC inokuphucula kakhulu ukuzinza kweepende ze-latex. Kwimiqulu yepeyinti ye-latex, i-HEC inokuthintela ngokufanelekileyo i-pigments kunye nezizalisi ekuzinzeni, ukuvumela ukuba ipeyinti ihlale ihlakazekile ngexesha lokugcinwa kunye nokusetyenziswa. Le propati ibaluleke kakhulu ukugcina ixesha elide, inceda ukwandisa ubomi beshelufu yepeyinti ye-latex.
Ukugcinwa kwamanzi
Ukwakhiwa kwepeyinti ye-latex ngokuqhelekileyo kubandakanya ukusetyenziswa kwamanzi amaninzi, kwaye iipropati ze-HEC ezigqwesileyo zokugcina amanzi zigcina ifilimu yokugubungela ngokulinganayo ngexesha lokumisa, ukuphepha iziphene zomhlaba ezifana nokuqhekeka, umgubo kunye nezinye iingxaki ezibangelwa ukuguquka kwamanzi ngokukhawuleza. . Oku akuncedi kuphela ukwenza ifilimu yokugqoka, kodwa iphucula ukunamathela kunye nokuqina kwefilimu yokugubungela.
Uhlengahlengiso lwe-Rheology
Njengomlungiseleli we-rheology, i-HEC inokulungelelanisa ukuziphatha kwe-shear thinning yeepende ze-latex, oko kukuthi, i-viscosity yepeyinti iyancitshiswa kumazinga aphezulu okucheba (okufana nokuxubha, i-roller coating, okanye ukutshiza), ukwenza kube lula ukuyifaka, kwaye amazinga aphantsi okucheba. Ukufunyanwa kwe-viscosity kwimilinganiselo yokucheba (umz. xa uphumle) kuthintela ukudodobala nokuhamba. Le propati ye-rheological inempembelelo ngqo kulwakhiwo kunye nomgangatho wokugqibela wokugquma wepeyinti ye-latex.
Uphuculo lolwakhiwo
Ukuqaliswa kwe-HEC kunokuphucula kakhulu ukusebenza kwepeyinti ye-latex, okwenza ipeyinti ibe lula kwaye ifane ngakumbi ngexesha lokusetyenziswa. Inokunciphisa amanqaku ebrashi, inike ukuguda okuhle kunye neglosi yefilimu yokwambathisa, kwaye iphucule amava omsebenzisi.
Khetha kwaye usebenzise
Kwimiqulu yepeyinti ye-latex, ukhetho kunye ne-dosage ye-HEC kufuneka ihlengahlengiswe ngokusekelwe kwiimfuno ezithile zesicelo. I-HEC enee-viscosities ezahlukeneyo kunye needigri zokutshintshwa ziya kuba nemiphumo eyahlukileyo ekusebenzeni kweepende ze-latex. Ngokubanzi, i-HEC ene-viscosity ephezulu ifaneleke ngakumbi kwiipeyinti ze-latex ezityebileyo ezifuna i-viscosity ephezulu, ngelixa i-HEC ene-viscosity ephantsi ilungele iipeyinti ezicatyiswe kakhulu ezinomanzi ongcono. Ukongeza, isixa se-HEC esongeziweyo kufuneka siphuculwe ngokweemfuno zokwenyani. I-HEC eninzi kakhulu iya kubangela ukutyeba okugqithisileyo kwe-coating, engabangeli ukwakhiwa.
Njengesongezo esibalulekileyo esisebenzayo, i-hydroxyethyl cellulose idlala iindima ezininzi kwiipende ze-latex: ukuqina, ukuzinzisa, ukugcina amanzi kunye nokuphucula ukusebenza. Ukusetyenziswa ngokufanelekileyo kwe-HEC akukwazi nje ukuphucula ukuzinza kokugcinwa kunye nokusebenza kokwakhiwa kwepeyinti ye-latex, kodwa nokuphucula kakhulu umgangatho kunye nokuqina kwefilimu yokugqoka. Ngophuhliso lweshishini lokugquma kunye nokuqhubela phambili kwezobuchwepheshe, amathuba okusetyenziswa kwe-HEC kwipeyinti ye-latex aya kuba banzi.
Ixesha lokuposa: Aug-03-2024