Namuhla, sizokhuluma nawe mayelana nokusetshenziswa okuvamile kwe-hydroxyethyl cellulose kupende kanye nezingubo. Upende, ngokwesiko obizwa ngokuthi ama-coatings e-China. Okubizwa ngokuthi ukugqoka kuhlanganiswe ebusweni bento okufanele ivikelwe noma ihlotshiswe, futhi ingakha ifilimu eqhubekayo ehlanganiswe ngokuqinile entweni okufanele ifakwe.
Iyini i-hydroxyethyl cellulose?
I-Hydroxyethyl cellulose (HEC), okuphuzi okumhlophe noma okukhanyayo, okunganuki, okuqinile okune-fibrous engeyona ubuthi noma okuyimpuphu, okulungiswe ngokufakwa kwe-etherification ye-alkaline cellulose ne-ethylene oxide (noma i-chlorohydrin), eyingxenye 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.
Kwenzekani lapho i-hydroxyethyl cellulose ihlangana namanziupende?
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 enhle kakhulu ye-colloidal yezixazululo ze-electrolyte zokugxila okuphezulu.
Ungayisebenzisa kanjani i-hydroxyethyl cellulose? Ungayengeza kanjani?
Engeza ngokuqondile ngesikhathi sokukhiqiza - le ndlela ilula futhi ithatha isikhathi esincane.
Faka amanzi ahlanzekile ku-vat efakwe i-blender ye-shear ephezulu. Qala ukunyakazisa ngokuqhubekayo ngesivinini esiphansi futhi kancane kancane uhlunga i-hydroxyethyl cellulose ngokulinganayo esixazululo. Qhubeka ugqugquzela kuze kube yilapho zonke izinhlayiya sezicwile. Bese wengeza ama-preservatives kanye nezithasiselo ezihlukahlukene. Okufana nezingulube, izinsiza zokusabalalisa, amanzi e-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.
Njengoba i-hydroxyethyl cellulose efakwe phezulu iyimpushana noma i-fibrous solid, u-Shandong Heda ukukhumbuza ukuthi unake amaphuzu alandelayo lapho ulungiselela ugologo kamama we-hydroxyethyl cellulose:
(1) Ngaphambi nangemuva kokwengeza i-hydroxyethyl cellulose, kufanele igcinwe inyakaza kuze kube yilapho isixazululo sesobala ngokuphelele futhi sicacile.
(2) Kumelwe ihlungwe kancane kancane emgqonyeni wokuxuba, futhi ungaxhumi ngokuqondile i-hydroxyethyl cellulose ne-hydroxyethyl cellulose emgqonyeni wokuxuba ngobuningi noma ngesimo sezigaxa namabhola.
(3) Izinga lokushisa lamanzi kanye nenani le-pH lamanzi kunobudlelwane obusobala nokuqedwa kwe-hydroxyethyl cellulose, ngakho kufanele kuqashelwe ngokukhethekile.
(4) Ungalokothi wengeze izinto ezine-alkali engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder icwiliswe ngamanzi. Ukwenyusa i-pH kuphela ngemuva kokumanzisa kuzosiza ekuncibilikeni.
(5) Ngokusemandleni akho, engeza i-ejenti ye-antifungal kusengaphambili.
(6) Uma usebenzisa i-high-viscosity hydroxyethyl cellulose, ukugcwala kotshwala kamama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala bukamama kunzima ukubuphatha.
Isikhathi sokuthumela: Nov-03-2022