Ungayisebenzisa kanjani i-hydroxyethyl cellulose kupende we-latex
1. I-Hydroxyethyl cellulose isetshenziselwa ukwenza iphalishi: Njengoba i-hydroxyethyl cellulose ingelula ukuncibilika ezincibilikisweni zemvelo, ezinye izinyibilikisi zemvelo zingasetshenziswa ukulungisa iphalishi.Amanzi eqhwa nawo awasincibilikisi esibi, ngakho-ke amanzi eqhwa avame ukusetshenziswa kanye noketshezi oluphilayo ukuze kulungiswe iphalishi.Iphalishi efana ne-hydroxyethyl cellulose ingafakwa ngokuqondile kupende we-latex.I-Hydroxyethyl cellulose isicwiliswe ngokuphelele ephalishini.Uma yengezwe kupende, iyancibilika ngokushesha futhi isebenze njenge-thickener.Ngemuva kokwengeza, qhubeka ugqugquzela kuze kube yilapho i-hydroxyethyl cellulose ihlakazeka ngokuphelele futhi ichitheka.Ngokuvamile, iphalishi lenziwa ngokuxuba izingxenye eziyisithupha ze-organic solvent noma amanzi eqhwa nengxenye eyodwa ye-hydroxyethyl cellulose.Ngemva kwemizuzu emi-5-30, i-hydroxyethyl cellulose izokwenziwa i-hydrolyzed futhi ivuvuke ngokusobala.(Khumbuza ukuthi umswakama wamanzi ajwayelekile uphezulu kakhulu ehlobo, ngakho akufanele asetshenziselwe ukuhlomisa iphalishi.)
2. Faka i-hydroxyethyl cellulose ngokuqondile lapho ugaya umbala: Le ndlela ilula futhi ithatha isikhathi esifushane.Indlela enemininingwane imi kanje:
(1) Engeza inani elifanele lamanzi ahlanziwe ebhakedeni elikhulu le-high shear mixer (ngokuvamile, izinsiza zokwakha ifilimu nezinto zokumanzisa ziyengezwa ngalesi sikhathi)
(2) Qala ukunyakazisa ngokuqhubekayo ngesivinini esiphansi futhi kancane kancane futhi ngokulinganayo wengeze i-hydroxyethyl cellulose
(3) Qhubeka ugoqa kuze kube yilapho zonke izinhlayiya zihlakazeka ngokulinganayo futhi zicwiliswe
(4) Engeza izithasiselo zokulwa nesikhutha ukuze ulungise inani le-PH
(5) Hlanganisa kuze kube yilapho yonke i-cellulose ye-hydroxyethyl ichitheka ngokuphelele (i-viscosity yesisombululo ikhula kakhulu), bese wengeza ezinye izingxenye kufomula, futhi ugaye kuze kube yilapho upende lwakhiwe.
3. Lungiselela i-hydroxyethyl cellulose ngotshwala kamama ukuze uyisebenzise kamuva: Le ndlela iwukulungisa ugologo kamama ngokugxilile kakhulu kuqala, bese ubufaka kupende we-latex.Inzuzo yale ndlela yukuthi iguquguqukayo futhi ingafakwa ngokuqondile kupende ophelile, kodwa kufanele igcinwe kahle..Izinyathelo kanye nendlela ziyafana nezinyathelo (1)-(4) endleleni yesi-2, umehluko wukuthi asikho isishunqisi esisheya kakhulu esidingekayo, futhi ama-agitator athile kuphela anamandla anele okugcina i-hydroxyethyl fiber ihlakazeke ngokulinganayo esixazululweni yi-Can. .Qhubeka ugoqa ngokuqhubekayo kuze kube yilapho uncibilika ngokuphelele kwisixazululo se-viscous.Kumele kuqashelwe ukuthi i-ejenti ye-antifungal kufanele yengezwe kutshwala kamama wepende ngokushesha ngangokunokwenzeka.
4 Izinto ezidinga ukunakwa lapho kulungiswa utshwala bomama be-hydroxyethyl cellulose
Njengoba i-hydroxyethyl cellulose iyimpushana ecutshungulwayo, kulula ukuyiphatha nokuyincibilikisa emanzini inqobo nje uma lezi zinto ezilandelayo zinakwa.
(1) Ngaphambi nangemva kokwengeza i-hydroxyethyl cellulose, kufanele inyakaziswe ngokuqhubekayo kuze kube yilapho isixazululo sisobala ngokuphelele futhi sicacile.
(2) Kumelwe ihlungwe kancane kancane ethangini lokuxuba, futhi ungafaki ngokuqondile inani elikhulu le-hydroxyethyl cellulose eyenze izigaxa noma amabhola ethangini lokuxuba.
(3) Izinga lokushisa lamanzi kanye nenani le-pH emanzini kunobudlelwano obubalulekile nokuqedwa kwe-hydroxyethyl cellulose, ngakho-ke kufanele kuqashelwe ngokukhethekile.
(4) Ungangezi ezinye izinto ezine-alkali engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder icwiliswe ngamanzi.Ukwenyusa i-pH ngemuva kokumanzisa kusiza ukuhlakazeka.
(5) Ngokusemandleni akho, engeza i-anti-fungal agent kusenesikhathi.
(6) Uma usebenzisa i-high-viscosity hydroxyethyl cellulose, ukugcwala kotshwala kamama akumele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala bukamama buyoba nzima ukubuphatha.
Izici ezithinta i-viscosity kapende we-latex:
(1) Ngenxa yokunyakazisa ngokweqile, umswakama ushisa ngokweqile ngesikhathi sokuhlakazwa.
(2) Inani lamanye amajiya emvelo ekwakhiweni kukapende kanye nesilinganiso senani ne-hydroxyethyl cellulose.
(3) Ukuthi inani le-surfactant nenani lamanzi elisetshenziswe kufomula kapende lifanelekile yini.
(4) Lapho kuhlanganiswa i-latex, inani lokuqukethwe kwe-oxide njenge-catalyst eyinsalela.
(5) Ukugqwala kwe-thickener yizinambuzane ezincane.
(6) Enqubweni yokwenza upende, noma ngabe ukulandelana kwesinyathelo sokwengeza i-thickener kufanelekile.
7 Lapho amabhamuza omoya engeziwe ehlala kupende, i-viscosity iyanda
Isikhathi sokuthumela: Mar-04-2023