I-Hydroxyethyl cellulose iphakathi ukuya kwibakala eliphezulu le-viscosity ye-cellulose ether, esetyenziswa njenge-thickener kunye ne-stabilizer yokwambathisa okusekelwe emanzini, ngakumbi xa i-viscosity yokugcina iphezulu kwaye i-viscosity yesicelo iphantsi. I-ether ye-cellulose kulula ukusabalalisa emanzini abandayo kunye nexabiso le-pH ≤ 7, kodwa kulula ukudibanisa kulwelo lwe-alkaline ngexabiso le-pH ≥ 7.5, ngoko kufuneka sinikele ingqalelo kwi-dispersibility ye-cellulose ether.
Iimpawu kunye nokusetyenziswa kwe-hydroxyethyl cellulose:
1. I-Anti-enzyme ye-non-ionic yamanzi i-thickener, engasetyenziselwa uluhlu olubanzi lwexabiso le-pH (PH = 2-12).
2. Ukusabalalisa ngokulula, kunokongezwa ngokuthe ngqo kwifom yepowder eyomileyo okanye ngendlela ye-slurry xa ugaya ii-pigments kunye nezizaliso.
3. Ulwakhiwo olugqwesileyo. Ineengenelo zokonga abasebenzi, akukho lula ukuthontsiza nokuxhoma, kunye nokuxhathisa okulungileyo kokuchaphaza.
4. Ukuhambelana kakuhle kunye neentlobo ezahlukeneyo ze-surfactants kunye ne-preservatives ezisetyenziswa kwipeyinti ye-latex.
5. I-viscosity yokugcina izinzile, enokuthintela i-viscosity yepeyinti ye-latex ekunciphiseni ngenxa yokuchithwa kwe-enzymes ngokubanzi i-hydroxyethyl cellulose.
Iipropati zeHydroxyethyl Cellulose
I-Hydroxyethyl cellulose ether yipolymer e-non-ionic emanzini. Ngumgubo omhlophe okanye okhanyayo omthubi ohamba lula. Ngokuqhelekileyo ayinyibiliki kwizinyibilikisi ezininzi eziphilayo
1. I-HEC iyancibilika emanzini atshisayo okanye kumanzi abandayo, kwaye ayifaki ukushisa okuphezulu okanye ukubilisa, okwenza kube neentlobo ezininzi ze-solubility kunye neempawu ze-viscosity, kunye ne-gelation engeyona i-thermal.
2. Ayina-ionic kwaye inokuhlalisana nezinye iipolymers ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa. Yinto egqwesileyo ye-colloidal thickener yezisombululo eziqulethe i-electrolyte ephezulu yoxinaniso.
3. Umthamo wokugcinwa kwamanzi uphindwe kabini kunalowo we-methyl cellulose, kwaye unolawulo olungcono lokuhamba.
4. Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, isakhono sokusabalalisa se-HEC sisona sibi kakhulu, kodwa ikhono lokukhusela i-colloid linamandla (umbala).
Ukutyeba
Ukuchaphazela ukusebenza, okufana noku: ukukwazi ukugubungela, ukuchasana kwe-splash, ukuxhathisa ilahleko; isakhiwo esikhethekileyo sothungelwano se-cellulose ether sinokuzinzisa umgubo kwinkqubo yokwaleka, icothise ukuhlaliswa kwayo, kwaye yenza inkqubo ifumane isiphumo esingcono sokugcina.
Ukuxhathisa okulungileyo kwamanzi
Emva kokuba ifilimu yepeyinti yomile ngokupheleleyo, inokuchasana kwamanzi okugqwesileyo. Oku kubonakalisa ngakumbi ixabiso lokuchasana kwamanzi kwinkqubo yokuqulunqwa kwe-PVC ephezulu. Ukususela kumazwe angaphandle ukuya kwi-Chinese formulations, kule nkqubo ye-PVC ephezulu, inani le-cellulose ether eyongeziweyo liyisiseko se-4-6‰.
ugcino lwamanzi olugqwesileyo
I-Hydroxyethyl cellulose inokwandisa ixesha lokuvezwa kunye nokulawula ixesha lokumisa ukufumana ukubunjwa kwefilimu engcono; phakathi kwabo, ukugcinwa kwamanzi kwe-methyl cellulose kunye ne-hypromellose kwehla kakhulu ngaphezu kwe-40 ° C, kwaye ezinye izifundo zangaphandle zikholelwa ukuba zingancitshiswa ngo-50% , amathuba okuba neengxaki ehlobo kunye nokushisa okuphezulu kwanda kakhulu.
Ukuzinza okulungileyo ukunciphisa i-flocculation yepeyinti
Ukuphelisa intlenga, i-syneresis kunye ne-flocculation; okwangoku, i-hydroxyethyl cellulose ether luhlobo lwemveliso engeyiyo i-ionic. Ayisebenzi ngezongezo ezahlukeneyo kwisixokelelwano.
Ukuhambelana kakuhle nenkqubo yemibala emininzi
Ukuhambelana okugqwesileyo kwemibala, ii-pigments kunye nezihluzi; I-hydroxyethyl cellulose ether inombala obalaseleyo, kodwa emva kokuguqulwa, njenge-methyl kunye ne-ethyl, kuya kubakho iingozi ezifihliweyo zokuhambelana kwe-pigment.
Ukuhambelana kakuhle kunye neemathiriyeli ekrwada ezahlukeneyo
Ingasetyenziselwa kwiinkqubo ezahlukeneyo zokuqulunqa iingubo.
Umsebenzi ophezulu we-antimicrobial
Ifanelekile kwiinkqubo ze-silicate
Ixesha lokuposa: Feb-02-2023