Indima ye-hydroxyethyl cellulose (HEC) embotsheni!

I-Hydroxyethyl cellulose (HEC), okuqinile okuphuzi okumhlophe noma okukhanyayo, okunganuki, okungewona ubuthi noma okuyimpuphu, okulungiselelwe ukufakwa kwe-etherification ye-alkaline cellulose ne-ethylene oxide (noma i-chlorohydrin), okuyingxenye yohlobo lwe-Nonionic soluble cellulose ethers. Ngenxa yokuthi i-HEC inezakhiwo ezinhle zokuqina, ukumisa, ukuhlakazeka, ukufakwa kwe-emulsifying, ukubopha, ukwenza ifilimu, ukuvikela umswakama nokuhlinzeka ngama-colloid avikelayo, iye yasetshenziswa kabanzi ekuhloleni amafutha, ukugqoka, ukwakhiwa, imithi nokudla, izindwangu, ukwenza amaphepha kanye nama-polymers. I-polymerization nezinye izinkambu.

Ngemuva kokuthi i-hydroxyethyl cellulose ihlangana nopende osuselwe emanzini?

Njenge-surfactant engeyona i-ionic, i-hydroxyethyl cellulose inalezi zakhiwo ezilandelayo ngaphezu kokujiya, ukumisa okwesikhashana, ukubopha, ukuntanta, ukwenza ifilimu, ukuhlakazwa, ukugcinwa kwamanzi nokuhlinzeka ngama-colloid avikelayo:

I-HEC iyancibilika emanzini ashisayo noma abandayo, futhi ayidli ekushiseni okuphezulu noma ekubiliseni, okwenza ibe nezici eziningi zokuncibilika kanye nezici ze-viscosity, kanye ne-gelling engashisi;

Umthamo wokugcina amanzi uphindwe kabili kune-methyl cellulose, futhi unokulawula ukugeleza okungcono;

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-thickener ye-colloidal enhle kakhulu yezixazululo ze-electrolyte zokugxila okuphezulu.

Ungayisebenzisa kanjani i-hydroxyethyl cellulose?

Engeza ngokuqondile ngesikhathi sokukhiqiza - le ndlela ilula kakhulu futhi ithatha isikhathi esincane:

Qala ukunyakazisa ngokuqhubekayo ngesivinini esiphansi bese uhlunga kancane kancane i-hydroxyethyl cellulose ngokulinganayo esixazululo bese uqhubeka ugqugquzela kuze kube yilapho zonke izinhlayiya sezicwile. Bese wengeza ama-preservatives kanye nezithasiselo ezihlukahlukene. Okufana nezingulube, izinsiza ezisakazisayo, i-ammonia, njll. Gqugquzela kuze kube yilapho yonke i-hydroxyethyl cellulose ichitheka ngokuphelele (i-viscosity yesisombululo ikhula kakhulu) ngaphambi kokwengeza ezinye izingxenye zefomula ukuze wenze ukusabela.

Ifakwe utshwala bukamama

Kuwukulungisa utshwala bomama obunezinga eliphezulu kuqala, bese ubufaka emkhiqizweni. Inzuzo yale ndlela yukuthi inokuguquguquka okukhulu futhi ingafakwa ngokuqondile kumkhiqizo ophelile, kodwa kufanele igcinwe kahle. Izinyathelo zale ndlela zifana nezinyathelo eziningi ezikuNdlela 1; umehluko wukuthi asikho isidingo se-high-shear agitator, futhi amanye ama-agitator anamandla anele okugcina i-hydroxyethyl cellulose ihlakazeke ngokulinganayo kusixazululo ingasetshenziswa, futhi uqhubeke Ugqugquzela kuze kube yilapho uhlakazeka ngokuphelele kusixazululo se-viscous. Kodwa-ke, kufanele kuqashelwe ukuthi i-ejenti ye-antifungal kufanele yengezwe kugologo kamama ngokushesha ngangokunokwenzeka.

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 igcinwe ivuselela kuze kube yilapho isisombululo sisobala ngokuphelele futhi sicacile;

Kumele ihlungwe emgqonyeni wokuxuba kancane kancane, futhi ungaxhumi ngokuqondile izigaxa noma ama-spheroids kanye ne-hydroxyethyl cellulose emgqonyeni wokuxuba;

Izinga lokushisa lamanzi kanye nenani le-pH lamanzi linobudlelwano obubalulekile nokuqedwa kwe-hydroxyethyl cellulose, ngakho-ke kufanele kuqashelwe ngokukhethekile;

Ungangezi ezinye izinto ezine-alkali engxubeni ngaphambi kwei-hydroxyethyl celluloseimpushana ifakwe emanzini. Ukwenyusa inani le-pH ngemuva kokucwiliswa emanzini kuzosiza ukuncibilika;

Kaningi ngangokunokwenzeka, engeza i-ejenti ye-antifungal kusengaphambili;

Uma usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuhlushwa kotshwala kamama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala bomama kunzima ukuphatha.