Njengezinto ezisetshenziswa kaningi ezimbonini ezahlukahlukene, i-cellulose ether powder inokunamathela okuhle, ukuqina nokugcinwa kwamanzi. Kusetshenziswe kahle ekwakheni, umuthi, izimonyo, ukudla nezinye izinkambu eziningi. Kodwa-ke, ukuthola ukusebenza okuhle kakhulu kusuka ku-cellulose ether powders, ukunakwa kufanele kukhokhwe kwinqubo yayo yokuchithwa. Nazi ezinye zezinto ezibalulekile okufanele ucabangele lapho kuncibilika i-cellulose ether powder:
1. Khetha i-solvent efanele
I-Cellulose eTher powder iyancibilika kakhulu emanzini, yakha isixazululo esisobala, esibonakalayo. Kodwa-ke, izinhlobo ezahlukene ze-Cellulose 'tilers zine-soubity ehlukile emanzini, futhi ukubulawa kwazo kuzothintwa yizinto ezifana nokushisa kanye no-pH. Ngakho-ke, ukukhetha i-solvent efanelekile yemiphumela efanelekile kubalulekile.
Isibonelo, uma i-cellulose ether powder idinga ukuchithwa endaweni yokushisa ephansi noma ohlelweni oluphansi lwe-PH, i-hpmxypropylmettelcelcellellulose (HPMC) noma i-methylcellulose (i-MC) ingaba ngcono kune-ethylcellulose (MC) noma i-carboxylate Choice methylcellulose (CMC). Kubalulekile ukukhetha i-solvent efanelekile ecubungula izidingo zohlelo lokusebenza kanye nezakhiwo ze-solvent.
2. Ukulawula okushisa
Ukushisa kungenye into ebalulekile ethinta ukuchithwa kwe-cellulose ether powder. I-solubility ye-cellulose izithathers inyuka ngamazinga okushisa, kepha kanjalo nesilinganiso sokuchithwa, okungaholela kumapodedi angenamikhawulo noma angenamikhawulo. Ngakho-ke, izinga lokushisa kumele lilawulwa ngokucophelela ngesikhathi sokuchithwa.
Ngokuvamile, izinga lokushisa elifanele lokuqeda i-cellulose ether ngu-20-40 ° C. Uma izinga lokushisa liphansi kakhulu, kungahle kudingeke ukwelula isikhathi sokuqothula noma usebenzise i-solvent efanelekile. Uma izinga lokushisa liphezulu kakhulu, kungadala ukonakala kwe-cellulose ether futhi kuthinte ukusebenza kwayo.
3. Govuza futhi uvuse
Ukuvusa nokuphazamiseka nakho kubalulekile lapho kuncibilika i-cellulose ether powder. Ukuqashwa okufanele kusiza i-powder ukusabalalisa ngokulinganayo ku-solvent futhi ivimbele ukuqina. Ukuvuselela futhi kusiza ukukhulisa izinga lokuchithwa, ikakhulukazi izixazululo eziphezulu ze-viscosity.
Kodwa-ke, ukuguga ngokweqile kungakhiqiza ama-bubble kamoya noma igwebu, elingathinta ukucaca nokuqina kwesisombululo. Ngakho-ke, kuyadingeka ukulungisa ijubane elishukumisayo namandla okuqina ngokuya ngezidingo ezithile kanye nemvelo yesicelo se-cellulose ether powder.
4. Izengezo
Izengezo zingangezwa ngesikhathi sokuchithwa kwe-cellulose ether powder ukuthuthukisa ukusebenza kwayo noma ukuqina. Isibonelo, i-borax noma ezinye izinto ze-alkaline zingangezwa ukulungisa i-pH yesisombululo bese zikhulisa i-viscosity. I-Sodium Bicarbonate ibuye yandisa futhi ukubonwa kwesixazululo, yehlisa izinga lokuchitheka.
Ezinye izengezo ezifana nezingasebenzi, usawoti noma ama-polymers angahle asetshenziselwe ukuthuthukisa i-solubity, ukuqina noma ezinye izakhiwo zekhambi le-ether ye-cellulose. Kodwa-ke, kubalulekile ukusebenzisa izengezo ngokulinganisela bese ukhetha ngokucophelela, njengoba izengezo ezingaphezulu noma ezingafanele zingadala imiphumela emibi engafuneki.
5. Isikhathi sokuqeda
Isikhathi sokuchithwa yipharamitha ebalulekile ekukhiqizweni nasekusetshenzisweni kwe-cellulose ether powder. Isikhathi sokuchithwa sincike ezintweni eziningi ezifana nohlobo lwe-cellulose ether, solvent, lokushisa, isivinini esishukumisayo kanye nokuhlushwa.
Ngokuvamile, i-cellulose ether powder kufanele ingezwe ku-solvent kancane futhi kancane kancane ngokuxuba okuqhubekayo kuze kutholakale isisombululo esihle. Izikhathi zokuqothula zingahluka kusuka emizuzwini embalwa kuya emahoreni ambalwa, kuya ngezinto ezishiwo ngenhla.
Kubalulekile ukuqapha ngokucophelela inqubo yokuqothula futhi uguqule amapharamitha njengoba kudingeka ukuze uqinisekise ikhwalithi nokuvumelana kwesixazululo se-cellulose ether.
Ekuphetheni, i-cellulose ether powder iyinto eguquguqukayo futhi ebalulekile emikhakheni ehlukahlukene yezimboni. Kodwa-ke, inqubo yokuqothula ibalulekile ukufeza ukusebenza kwayo okuhle. Ngokunaka izici ezinjengokukhethwa kwe-solvent, ukulawulwa kokushisa, okuvusa amangalo, nezithasiselo, nesikhathi sokuqophela, kungenzeka ukuthola isixazululo esisezingeni eliphakeme se-ether.
Isikhathi sePosi: Aug-18-2023