IHydroxyethyl cellulose (HEC), okuphuzi okumhlophe noma okukhanyayo, okunganuki, okuqinile okunganabuthi noma okuyimpuphu, okulungiselelwe ukusabela kwe-etherification ye-alkaline cellulose ne-ethylene oxide (noma i-chlorohydrin), ingeka-Nonionic soluble cellulose ethers. Njengoba i-HEC inezakhiwo ezinhle zokuqina, ukumisa, ukuhlakazeka, ukuhlanganisa, ukubopha, ukwenza ifilimu, ukuvikela umswakama nokuhlinzeka nge-colloid evikelayo, iye yasetshenziswa kabanzi ekuhloleni amafutha, ukugqoka, ukwakhiwa, imithi, ukudla, izindwangu, ukwenza iphepha kanye ne-polymerization. nezinye izinkambu.
Ngemuva komhlangano we-hydroxyethyl cellulose nopende osuselwe emanzini?
Njenge-surfactant engeyona i-ionic, i-hydroxyethyl cellulose inalezi zakhiwo ezilandelayo ngaphezu kokuqina, ukumisa okwesikhashana, ukubopha, ukuntanta, ukwenza ifilimu, ukuhlakazeka, ukugcinwa kwamanzi kanye nokuhlinzeka nge-colloid evikelayo:
I-HEC iyancibilika emanzini ashisayo noma emanzini abandayo, izinga lokushisa eliphezulu noma abilayo ngaphandle kwemvula, ukuze ibe nohlu olubanzi lwezimpawu ze-solubility kanye ne-viscosity, kanye ne-gelation engashisi;
Umthamo wokugcina amanzi uphakeme ngokuphindwe kabili kunalowo we-methyl cellulose, futhi unokulawulwa okungcono kokugeleza;
Uma kuqhathaniswa ne-methyl cellulose eyaziwayo ne-hydroxypropyl methyl cellulose, ikhono lokuhlakaza le-HEC libi kakhulu, kodwa ikhono le-colloid lokuvikela linamandla kakhulu;
Ayiyona i-ionic futhi ingahlala nohlu olubanzi lwama-polymers ancibilika emanzini, ama-surfactants, nosawoti. Kuyi-colloidal thickener enhle kakhulu yezixazululo eziqukethe ama-electrolyte agxile kakhulu.
Ungayisebenzisa kanjani i-hydroxyethyl cellulose?
Engeza ngokuqondile ngesikhathi sokukhiqiza - le ndlela ilula kakhulu futhi ithatha isikhathi esifushane kakhulu:
Qala ukunyakazisa ngokuqhubekayo ngesivinini esiphansi bese uhlunga kancane kancane i-hydroxyethyl cellulose ngokulinganayo esixazululo futhi uqhubeke ugoqa kuze kube yilapho zonke izinhlayiya sezicwile. Bese wengeza ama-preservatives kanye nezithasiselo ezihlukahlukene. Okufana nezingulube, izinsiza zokusabalalisa, amanzi e-ammonia, njll. Gcoba kuze kube yilapho yonke i-hydroxyethyl cellulose ichitheka ngokuphelele (i-viscosity yesisombululo ikhula kakhulu) ngaphambi kokwengeza ezinye izingxenye kufomula yokusabela.
Ifakwe utshwala bukamama
Kuwukulungisa ugologo kamama ngokugcwala okuphezulu kuqala, bese ulengeza emkhiqizweni. Inzuzo yale ndlela yukuthi inokuguquguquka okukhulu futhi ingafakwa ngokuqondile kumkhiqizo ophelile, kodwa kufanele igcinwe kahle. Izinyathelo zale ndlela zifana nezinyathelo eziningi endleleni 1; umehluko wukuthi asikho isidingo se-high-shear agitator, futhi ama-agitator athile kuphela anamandla anele okugcina i-hydroxyethyl cellulose ihlakazeke ngokulinganayo kusixazululo ingaqhutshwa ngaphandle kokumisa Ukugqugquzela kuze kube yilapho kuqedwa ngokuphelele kusixazululo se-viscous. Kodwa-ke, kufanele kuqashelwe ukuthi umuthi obulala isikhunta kufanele ufakwe etshwaleni likamama ngokushesha okukhulu.
Amathiphu omusa:
Njengoba i-hydroxyethyl cellulose efakwe phezulu iyimpuphu noma i-fibrous solid, lapho ulungiselela ugologo kamama we-hydroxyethyl cellulose, kukukhumbuza ukuthi unake amaphuzu alandelayo:
Ngaphambi nangemva kokwengeza i-hydroxyethyl cellulose, kufanele inyakaziswe ngokuqhubekayo kuze kube yilapho isisombululo sisobala ngokuphelele futhi sicacile;
Kumele ihlungwe kancane kancane ethangini lokuxuba, futhi ungayifaki ngokuqondile ku-tank yokuxuba ngobuningi noma izigaxa, amabhola kanye ne-hydroxyethyl cellulose;
Ukushisa kwamanzi kanye nenani le-PH emanzini kunobudlelwane obusobala nokuqedwa kwe-hydroxyethyl cellulose, ngakho-ke kufanele kuqashelwe ngokukhethekile;
Ungangezi ezinye izinto ezine-alkali engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder icwiliswe ngamanzi. Ukwenyusa inani le-pH ngemuva kokucwiliswa kuzosiza ukuncibilika;
Ngangokunokwenzeka, engeza i-anti-mold agent kusengaphambili;
Uma usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuhlushwa kotshwala kamama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala bomama buyoba nzima ukuphatha.
Isikhathi sokuthumela: Dec-23-2022