Upende, ovame ukubizwa ngokuthi upende eShayina. Lo pende obizwa ngokuthi upende umbozwa phezu kwento ezovikelwa noma ehlotshiswe, futhi ungakha ifilimu eqhubekayo enamathele ngokuqinile entweni ezombozwa.
Kuyini i-Hydroxyethyl Cellulose?
I-Hydroxyethyl cellulose (HEC), okuyisiqina esimhlophe noma esiphuzi esikhanyayo, esingenaphunga, esingenabo ubuthi esinama-fibrous noma esiwuphuphu, esilungiselelwe ngokusabela kwe-etherification ye-alkaline cellulose kanye ne-ethylene oxide (noma i-chlorohydrin), kungokwe-Nonionic soluble cellulose ethers. Njengoba i-HEC inezakhiwo ezinhle zokujiya, ukumiswa, ukuhlakazwa, ukuhlanganiswa, ukwakheka kwefilimu, ukuvikela umswakama kanye nokunikeza i-colloid evikelayo, isetshenziswe kabanzi ekuhlolweni kwamafutha, ukumbozwa, ukwakhiwa, imithi, ukudla, izindwangu, ukwenza amaphepha kanye ne-polymer i-Polymerization kanye neminye imikhakha.
Kwenzekani uma 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 i-colloid evikelayo:
I-HEC iyancibilika emanzini ashisayo noma emanzini abandayo, izinga lokushisa eliphezulu noma ukubila ngaphandle kwemvula, ukuze ibe nezici eziningi zokuncibilika kanye nokuthamba, kanye ne-gelation engashisi;
Umthamo wokugcina amanzi uphindwe kabili kunowe-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 yilona elinamandla kakhulu.
Ayiyona i-ionic futhi ingahambisana nezinye izinhlobo eziningi zama-polymer ancibilika emanzini, ama-surfactant, kanye nosawoti. Iyisithako esihle kakhulu se-colloidal sezixazululo ze-electrolyte ezigcwele kakhulu;
Ungayisebenzisa kanjani i-hydroxyethyl cellulose? Ungayifaka kanjani?
Faka ngqo ngesikhathi sokukhiqiza - le ndlela ilula kakhulu futhi ithatha isikhathi esifushane kakhulu.
Faka amanzi ahlanzekile ebhakedeni elikhulu elinomshini wokuxuba osezingeni eliphezulu. Qala ukuxuba njalo ngesivinini esiphansi bese uhlinza kancane kancane i-hydroxyethyl cellulose uyifake esixazululweni ngokulinganayo. Qhubeka uvuselela kuze kube yilapho zonke izinhlayiya zimanzi. Bese ufaka izithasiselo kanye nezinye izithako ezahlukahlukene. Njengemibala, izinsiza zokuhlakaza, amanzi e-ammonia, njll. Hlanganisa kuze kube yilapho yonke i-hydroxyethyl cellulose incibilika ngokuphelele (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokufaka ezinye izingxenye kufomula yokusabela.
Ifakwe utshwala be-mama
Kuwukulungisa utshwala obungumama ngokugxila okuphezulu 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 eziku-1; umehluko ukuthi asikho isidingo se-agitator eshefa kakhulu, futhi amanye ama-agitator anamandla anele okugcina i-hydroxyethyl cellulose ihlakazeke ngokulinganayo esixazululweni angaqhubeka ngaphandle kokuyeka Hlanganisa kuze kube yilapho incibilika ngokuphelele ibe yisisombululo esiqinile. Kodwa-ke, kumelwe kuqashelwe ukuthi i-fungicide kumele ifakwe ku-agitator engumama ngokushesha okukhulu.
Njengoba i-hydroxyethyl cellulose ephathwe phezulu iyi-powdery noma i-fibrous solid, i-Lihongde ikukhumbuza ukuthi unake amaphuzu alandelayo lapho ulungiselela i-hydroxyethyl cellulose mother liquor:
(1) Ngaphambi nangemva kokufaka i-hydroxyethyl cellulose, kumele ivuselelwe njalo kuze kube yilapho ikhambi selicacile futhi licacile ngokuphelele.
(2) Kumelwe ihlungwe kancane kancane ethangini lokuxuba, futhi ungafaki inani elikhulu noma ufake i-hydroxyethyl cellulose ngqo ethangini lokuxuba.
(3) Izinga lokushisa lamanzi kanye nenani le-PH emanzini kunobuhlobo obubalulekile nokuncibilika kwe-hydroxyethyl cellulose, ngakho-ke kufanele kunakwe ngokukhethekile.
(4) Ungafaki ezinye izinto ze-alkaline engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder imanziswe ngamanzi. Ukuphakamisa i-pH ngemva kokumanzisa kusiza ekuncibilikeni.
(5) Kangangokunokwenzeka, engeza i-antifungal agent kusenesikhathi
(6) Uma usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, ukuhlushwa kotshwala obungumama akufanele kube ngaphezu kuka-2.5-3% (ngesisindo), ngaphandle kwalokho utshwala obungumama buzoba nzima ukusingatha.
Isikhathi sokuthunyelwe: Mashi-02-2023