Embonini yepende, ukuzinza kanye ne-rheology yokunamathisela umbala kubalulekile. Kodwa-ke, ngesikhathi sokugcina nokusetshenziswa, ukunamathisela kombala kuvame ukuba nezinkinga ezifana nokuqina kanye ne-agglomeration, okuthinta umphumela wokwakha kanye nekhwalithi yokugqoka.I-Hydroxyethyl cellulose (HEC), njenge-polymer thickener evamile encibilika emanzini, idlala indima ebalulekile ekwakhiweni kopende. Ingakwazi ukuthuthukisa ngempumelelo izakhiwo ze-rheological zokunamathisela umbala, ivimbele i-agglomeration, futhi ithuthukise ukuzinza kwesitoreji.
1. Izizathu zokuqina nokuhlanganiswa kokunamathisela kombala kapende
Ukuqina nokuhlanganiswa kokunamathiselwe kombala kapende ngokuvamile kuhlobene nalezi zinto ezilandelayo:
Ukuhlakazeka kwe-pigment okungazinzile: Izinhlayiya ze-pigment ekunamathiselwe kombala zingase zintante futhi zizinze phakathi nokugcinwa, okuholela ekugxiliseni okukhulu kwendawo kanye nokuhlanganisana.
Ukuhwamuka kwamanzi ohlelweni: Ngesikhathi sokugcina, ukuhwamuka kwengxenye yamanzi kuzobangela ukuba i-viscosity yokunamathisela kombala kwande, futhi kuze kwakhiwe indaba eyomile phezulu.
Ukungahambisani phakathi kwezithasiselo: Ama-thickeners athile, ama-disperants noma ezinye izithasiselo zingasabelana, zithinte izakhiwo ze-rheological zokunamathisela kombala, okuholela ekwandeni kwe-viscosity okungavamile noma ukwakheka kwe-flocculent.
Umthelela wamandla okugunda: Ukunyakazisa komshini isikhathi eside noma ukupompa kungase kubangele ukucekelwa phansi kwesakhiwo seketango le-polymer ohlelweni, kunciphise ukumanzi kokunamathisela kombala, futhi kukwenze kube ne-viscous noma i-agglomeration.
2. Indlela yokusebenza ye-hydroxyethyl cellulose
I-Hydroxyethyl cellulose (HEC) iphuma ku-cellulose engeyona i-ionic enokuqina okuhle, ikhono lokulungisa i-rheological kanye nokuzinza kokuhlakazeka. Indlela yayo eyinhloko yokusebenza ekunamathisele umbala kapende ihlanganisa:
Ukuqina nokulungiswa kwe-rheological: I-HEC ingahlangana nama-molecule wamanzi ngokusebenzisa i-hydrogen bonding ukuze yakhe ungqimba oluzinzile lwe-hydration, ikhulise i-viscosity yesistimu, ivimbele izinhlayiya ze-pigment ekuhlanganiseni nasekuzinzeni, futhi iqinisekise ukuthi ukunamathisela kombala kugcina uketshezi oluhle ngesikhathi sokuma noma ukwakhiwa.
Uhlelo lokuhlakazeka oluzinzile: I-HEC inomsebenzi omuhle ongaphezulu, ingamboza izinhlayiya ze-pigment, ithuthukise ukuhlakazeka kwabo esigabeni samanzi, ivimbele ukuhlangana phakathi kwezinhlayiya, futhi ngaleyo ndlela inciphise ukugeleza nokuhlangana.
I-Anti-water evaporation: I-HEC ingenza ungqimba oluthile lokuvikela, inciphise izinga lokuhwamuka kwamanzi, ivimbele ukunamathisela kombala ukuthi ungaqini ngenxa yokulahlekelwa kwamanzi, futhi inwebe isikhathi sokuwagcina.
Ukumelana ne-Shear: I-HEC inika upende i-thixotropy enhle, yehlisa i-viscosity ngaphansi kwamandla aphezulu okugunda, yenza kube lula ukwakhiwa, futhi ingabuyisela ngokushesha i-viscosity ngaphansi kwamandla aphansi okugunda, ithuthukise ukusebenza kukapende okunqanda ukucwila.
3. Izinzuzo ze-hydroxyethyl cellulose ekunamathiseleni kombala kapende
Ukwengeza i-hydroxyethyl cellulose ohlelweni lokunamathisela umbala kapende kunezinzuzo ezilandelayo:
Ukuthuthukisa ukuzinza kwesitoreji sokunamathisela kombala: I-HEC ingavimbela ngokuphumelelayo i-pigment sedimentation kanye ne-agglomeration, iqinisekise ukuthi ukunamathisela kombala kugcina i-fluidity efanayo ngemva kokugcinwa kwesikhathi eside.
Ukuthuthukisa ukusebenza kokwakhiwa: I-HEC inikeza ukunamathisela kombala izici ezinhle kakhulu ze-rheological, okwenza kube lula ukuxubha, ukugoqa noma ukufutha ngesikhathi sokwakha, ukuthuthukisa ukuguquguquka kokwakhiwa kopende.
Ukuthuthukisa ukumelana namanzi: I-HEC inganciphisa ukuguqulwa kwe-viscosity okubangelwa ukuhwamuka kwamanzi, ukuze ukunamathisela kombala kungagcina ukuzinza okuhle ngaphansi kwezimo ezihlukahlukene zemvelo.
Ukuhambisana okuqinile: I-HEC i-thickener engeyona i-ionic, enokuhambisana okuhle nama-dispersants amaningi, ama-wetting agents nezinye izithasiselo, futhi ngeke kubangele ukungazinzi ohlelweni lokubunjwa.
Ukuvikelwa kwemvelo nokuphepha: I-HEC isuselwa ku-cellulose yemvelo, ihlangabezana nezimfuneko zokuvikelwa kwemvelo, ayikhiphi izinto eziyingozi, futhi ihambisana nenkambiso yokuthuthukiswa kokuvikelwa kwemvelo kwezingubo ezisekelwe emanzini.
4. Ukusetshenziswa nokusikisela kwe-hydroxyethyl cellulose
Ukuze udlale kangcono indima ye-HEC, amaphuzu alandelayo kufanele aqashelwe lapho uyisebenzisa kufomula yokunamathisela umbala wokunamathisela:
Ukulawulwa okunengqondo kwenani lokwengeza: Inani le-HEC livamise ukuba phakathi kuka-0.2% -1.0%. Inani elithile lokusetshenziswa lidinga ukulungiswa ngokuvumelana nezidingo zesistimu yokugqoka ukuze kugwenywe i-viscosity ngokweqile futhi kuthinte ukusebenza kokwakhiwa.
Inqubo yokuchithwa kwangaphambili: I-HEC kufanele ihlakazwe futhi ihlakazwe emanzini kuqala, bese yengezwa ohlelweni lokunamathisela umbala ngemuva kokwenza isisombululo esifanayo sokuqinisekisa ukuthi isebenzisa ngokugcwele imiphumela yayo yokuqina nokuhlakazeka.
Sebenzisa nezinye izithasiselo: Ingafaniswa ngokunengqondo nama-disperants, ama-ejenti wokumanzisa, njll. ukuze kuthuthukiswe ukuqina kokuhlakazeka kwemibala kanye nokwenza kahle kokumboza.
Gwema imiphumela yokushisa ephezulu: I-solubility ye-HEC ithintwa kakhulu izinga lokushisa. Kunconywa ukuyincibilikisa ezingeni lokushisa elifanele (25-50℃) ukugwema ukuhlangana noma ukuhlakazeka okunganele.
I-Hydroxyethyl celluloseinenani lesicelo esibalulekile ohlelweni lokunamathisela umbala wepende. Ingakwazi ukuxazulula ngempumelelo izinkinga zokunamathisela kombala ukujiya nokuhlanganisa, futhi ithuthukise ukuqina kwesitoreji nokusebenza kokwakhiwa. Ukuqina kwayo, ukuzinza kokuhlakazeka kanye nokumelana nokuhwamuka kwamanzi kuyenza ibe isithasiselo esibalulekile samapende asekelwe emanzini. Ekusetshenzisweni okungokoqobo, ukulungiswa okunengqondo komthamo we-HEC nendlela yokwengeza kungakhulisa izinzuzo zayo futhi kuthuthukise ikhwalithi iyonke kapende. Ngokuthuthukiswa kopende abasekelwe emanzini abangayingcolisi imvelo, amathuba okufaka isicelo e-HEC azoba banzi.
Isikhathi sokuthumela: Apr-09-2025