01. Izakhiwo ze-sodium carboxymethylcellulose
I-sodium carboxymethyl cellulose iyi-anionic polymer electrolyte.Izinga lokushintshwa kwe-CMC yezentengiso lisukela ku-0.4 kuye ku-1.2.Kuye ngobumsulwa, ukubukeka kumhlophe noma impushana emhlophe.
1. I-viscosity yesisombululo
I-viscosity yesisombululo samanzi se-CMC ikhula ngokushesha ngokwanda kokugxila, futhi isisombululo sinezici zokugeleza kwe-pseudoplastic.Izixazululo ezinezinga eliphansi lokushintsha (DS=0.4-0.7) zivame ukuba ne-thixotropy, futhi i-viscosity ebonakalayo izoshintsha lapho ukugunda kusetshenziswa noma kukhishwa esixazululweni.I-viscosity yesisombululo samanzi se-CMC siyehla ngokukhuphuka kwezinga lokushisa, futhi lo mphumela uyabuyiseleka emuva lapho izinga lokushisa lingeqi ku-50 °C.Ezingeni lokushisa eliphakeme isikhathi eside, i-CMC izokwehlisa izinga.Lesi yisizathu esenza kube lula ukucwebezela okopha kube mhlophe futhi konakale lapho uphrinta iphethini yomugqa omncane wopha i-glaze.
I-CMC esetshenziselwa ukucwebezela kufanele ikhethe umkhiqizo onezinga eliphezulu lokushintsha, ikakhulukazi okopha okucwebezelayo.
2. Umthelela yenani le-pH ku-CMC
I-viscosity yesisombululo samanzi se-CMC ihlala ijwayelekile ebangeni elibanzi le-pH, futhi izinze kakhulu phakathi kwe-pH 7 kanye no-9. Nge-pH
Inani liyehla, futhi i-CMC ishintsha isuka kusawoti ibe yi-asidi, engancibiliki emanzini futhi iwa.Uma inani le-pH lingaphansi kuka-4, iningi lefomu likasawoti liphenduka libe yi-asidi bese liyawa.Uma i-pH ingaphansi kuka-3, izinga lokushintsha lingaphansi kuka-0.5, futhi lingashintsha ngokuphelele lisuka kusawoti liye kwifomu le-asidi.Inani le-pH lokuguqulwa okuphelele kwe-CMC enezinga eliphezulu lokushintsha (ngaphezulu kuka-0.9) lingaphansi kuka-1. Ngakho-ke, zama ukusebenzisa i-CMC ngezinga eliphezulu lokushintsha i-glaze ephuma emanzini.
3. Ubudlelwano phakathi kwe-CMC nama-ion ensimbi
Ama-ion ensimbi e-Monovalent angakha usawoti oncibilikayo emanzini nge-CMC, ongeke uthinte i-viscosity, obala nezinye izakhiwo zesisombululo esinamanzi, kodwa i-Ag+ ihlukile, okuzokwenza ukuthi isisombululo sinciphe.Ama-ion ensimbi e-Divalent, afana ne-Ba2+, Fe2+, Pb2+, Sn2+, njll. abangela ukuba ikhambi lihle;I-Ca2+, Mg2+, Mn2+, njll. azinawo umthelela esixazululweni.Ama-ion ensimbi amathathu enza usawoti ongancibiliki nge-CMC, noma imvula noma ijeli, ngakho-ke i-ferric chloride ayikwazi ukujiya nge-CMC.
Kukhona ukungaqiniseki kumphumela wokubekezelela usawoti we-CMC:
(1) Kuhlobene nohlobo lukasawoti wensimbi, inani le-pH lesixazululo kanye nezinga lokushintsha i-CMC;
(2) Kuhlobene nokuhleleka kokuxuba kanye nendlela ye-CMC nosawoti.
I-CMC enezinga eliphezulu lokushintsha inokuhambisana kangcono nosawoti, futhi umphumela wokwengeza usawoti kusixazululo se-CMC ungcono kunalowo wamanzi anosawoti.
I-CMC yinhle.Ngakho-ke, lapho ulungiselela i-osmotic glaze, ngokuvamile ncibilikisa i-CMC emanzini kuqala, bese wengeza isixazululo sikasawoti we-osmotic.
02. Ungayibona kanjani i-CMC emakethe
Kuhlukaniswa ngobumsulwa
Ibanga lokuhlanzeka okuphezulu - okuqukethwe kungaphezulu kwama-99.5%;
Izinga elihlanzekile lemboni - okuqukethwe kungaphezu kwama-96%;
Umkhiqizo ongahluziwe - okuqukethwe kungaphezu kwama-65%.
Kuhlukaniswa nge-viscosity
Uhlobo oluphezulu lwe-viscosity - i-viscosity ye-1% yesisombululo ingaphezu kwe-5 Pa s;
Uhlobo lwe-viscosity ephakathi - i-viscosity yesisombululo se-2% ingaphezu kwama-5 Pa s;
Uhlobo oluphansi lwe-viscosity - i-viscosity yesisombululo esingu-2% ngaphezu kwe-0.05 Pa·s.
03. Incazelo yamamodeli avamile
Umkhiqizi ngamunye unemodeli yakhe, kuthiwa kunezinhlobo ezingaphezu kuka-500.Imodeli evame kakhulu inezingxenye ezintathu: X—Y—Z.
Incwadi yokuqala imele ukusetshenziswa kwemboni:
F - izinga lokudla;
I——ibanga lezimboni;
C - ibanga le-ceramic;
O - ibanga le-petroleum.
Incwadi yesibili imele izinga le-viscosity:
H - i-viscosity ephezulu
I-M——i-viscosity emaphakathi
L - i-viscosity ephansi.
Uhlamvu lwesithathu lumelele izinga lokushintshwa, futhi inombolo yalo ehlukaniswe ngo-10 yizinga langempela lokushintshwa kwe-CMC.
Isibonelo:
Imodeli ye-CMC yi-FH9, okusho ukuthi i-CMC enebanga lokudla, i-viscosity ephezulu kanye ne-substitution degree engu-0.9.
Imodeli ye-CMC yi-CM6, okusho ukuthi i-CMC yebanga le-ceramic, i-viscosity emaphakathi kanye ne-substitution degree engu-0.6.
Ngokuhambisanayo, kukhona futhi amamaki asetshenziswa kwezokwelapha, izindwangu nezinye izimboni, okungavamile ukutholwa ekusetshenzisweni kwemboni ye-ceramic.
04. Amazinga Okukhethwa Kwemboni Yobumba
1. Ukuzinza kwe-viscosity
Lesi yisimo sokuqala sokukhetha i-CMC ye-glaze
(1) I-viscosity ayishintshi kakhulu nganoma yisiphi isikhathi
(2) I-viscosity ayishintshi kakhulu ngokushisa.
2. I-thixotropy encane
Ekukhiqizeni amathayili acwebezelisiwe, i-glaze slurry ayikwazi ukuba yi-thixotropic, ngaphandle kwalokho izothinta ikhwalithi yendawo ecwebezelayo, ngakho-ke kungcono ukukhetha i-CMC yebanga lokudla.Ukuze kuncishiswe izindleko, abanye abakhiqizi basebenzisa i-CMC yezinga lezimboni, futhi ikhwalithi ye-glaze ithinteka kalula.
3. Naka indlela yokuhlola i-viscosity
(1) Ukugxiliswa kwe-CMC kunobudlelwane obucacile ne-viscosity, ngakho-ke kufanele kuqashelwe ukunemba kwesisindo;
(2) Naka ukufana kwesixazululo se-CMC.Indlela yokuhlola eqinile iwukushukumisa ikhambi amahora ama-2 ngaphambi kokulinganisa i-viscosity yayo;
(3) Izinga lokushisa linethonya elikhulu ku-viscosity, ngakho-ke kufanele kuqashelwe izinga lokushisa elizungezile ngesikhathi sokuhlolwa;
(4) Naka ukulondolozwa kwesixazululo se-CMC ukuvimbela ukuwohloka kwaso.
(5) Naka umehluko phakathi kwe-viscosity nokuvumelana.
Isikhathi sokuthumela: Jan-05-2023