Indima ye-hydroxyethyl cellulose (HEC) ekumbozweni!

I-Hydroxyethyl cellulose (HEC), okuqinile okumhlophe noma okukhanyayo okuphuzi, okungenaphunga, okungenayo ubuthi okune-fibrous noma okufana nempuphu, okulungiselelwe ngokushintsha i-alkaline cellulose kanye ne-ethylene oxide (noma i-chlorohydrin), okungokwama-ether e-cellulose ancibilikayo e-Nonionic. Ngenxa yokuthi i-HEC inezakhiwo ezinhle zokujiya, ukumisa, ukuhlakaza, ukuhlanganisa, ukubopha, ukwakha ifilimu, ukuvikela umswakama kanye nokunikeza ama-colloid avikelayo, isetshenziswe kabanzi ekuhloleni uwoyela, ukumboza, ukwakha, imithi kanye nokudla, izindwangu, ukwenza amaphepha kanye nama-polymer. Ukuhlanganisa nezinye izinkambu.

Ngemva kokuba i-hydroxyethyl cellulose ihlangana nopende olusekelwe emanzini?

Njenge-surfactant engeyona i-ionic, i-hydroxyethyl cellulose inezakhiwo ezilandelayo ngaphezu kokuqina, ukumiswa, ukubopha, ukuntanta, ukwakha ifilimu, ukuhlakazeka, ukugcinwa kwamanzi kanye nokunikeza ama-colloid avikelayo:

I-HEC iyancibilika emanzini ashisayo noma abandayo, futhi ayishisi uma izinga lokushisa eliphezulu noma libila, okwenza ibe nezici eziningi zokuncibilika kanye nokuthamba, kanye ne-gelling engashisi;

Umthamo wokugcina amanzi uphindwe kabili kune-methyl cellulose, futhi unokulawulwa okungcono kokugeleza kwamanzi;

Uma kuqhathaniswa ne-methyl cellulose eyaziwayo kanye ne-hydroxypropyl methyl cellulose, ikhono lokuhlakaza le-HEC libi kakhulu, kodwa ikhono lokuvikela i-colloid linamandla kakhulu;

Ayiyona i-ionic futhi ingahambisana nezinye izinhlobo eziningi zama-polymer ancibilika emanzini, ama-surfactants, kanye nosawoti. Iyisithako esihle kakhulu se-colloidal sezixazululo ze-electrolyte ezigcwele kakhulu.

Indlela yokusebenzisa i-hydroxyethyl cellulose?

Faka ngqo ngesikhathi sokukhiqiza - le ndlela ilula kakhulu futhi ithatha isikhathi esincane:

Qala ukuxuba njalo ngesivinini esiphansi bese uhlikihla kancane kancane i-hydroxyethyl cellulose ngokulinganayo esixazululweni bese uqhubeka ukuxuba kuze kube yilapho zonke izinhlayiya zimanziswa. Bese ufaka izithasiselo kanye nezinye izithako ezahlukahlukene. Njengemibala, izinsiza zokuhlakaza, i-ammonia, njll. Hlanganisa kuze kube yilapho yonke i-hydroxyethyl cellulose incibilika ngokuphelele (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokufaka ezinye izingxenye kufomula ukuze wenze ukusabela.

Ifakwe utshwala be-mama

Kuwukulungisa utshwala obungumama obunomthamo ophezulu kuqala, bese ubufaka emkhiqizweni. Inzuzo yale ndlela ukuthi inokuguquguquka okukhulu futhi ingafakwa ngqo emkhiqizweni oqediwe, kodwa kumele igcinwe kahle. Izinyathelo zale ndlela zifana nezinyathelo eziningi ezikuMethod 1; umehluko ukuthi asikho isidingo se-agitator eshefa kakhulu, futhi amanye ama-agitator anamandla anele okugcina i-hydroxyethyl cellulose ihlakazeke ngokulinganayo esixazululweni angasetshenziswa, futhi aqhubeke nokuxuba kuze kube yilapho incibilika ngokuphelele ibe yisisombululo esiqinile. Kodwa-ke, kumelwe kuqashelwe ukuthi i-antifungal agent kumele ifakwe ku-agitator ewumama ngokushesha okukhulu.

Amathiphu amahle:

Njengoba i-hydroxyethyl cellulose elashwe ngaphezulu iwuphawuda noma i-fibrous solid, lapho ulungisa i-hydroxyethyl cellulose mother liquor, khumbuza ukuthi unake amaphuzu alandelayo:

Ngaphambi nangemva kokufaka i-hydroxyethyl cellulose, kumele ihlale ixutshwa kuze kube yilapho ikhambi selicacile futhi licacile ngokuphelele;

Kumelwe ihlungwe kancane kancane emgqonyeni wokuxuba, futhi ungaxhumanisi ngqo izigaxa noma ama-spheroid kanye ne-hydroxyethyl cellulose emgqonyeni wokuxuba;

Izinga lokushisa lamanzi kanye nenani le-pH lamanzi linobudlelwano obubalulekile nokuncibilika kwe-hydroxyethyl cellulose, ngakho-ke kufanele kunakwe ngokukhethekile kulo;

Ungafaki ezinye izinto ze-alkaline engxubeni ngaphambi kokusebenzisai-hydroxyethyl celluloseimpuphu imanziswa ngamanzi. Ukuphakamisa inani le-pH ngemva kokumanziswa kuzosiza ukuncibilika;

Kangangokunokwenzeka, engeza i-antifungal agent kusenesikhathi;

Uma usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, ukuhlushwa kotshwala obungumama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala obungumama kunzima ukubuphatha.