Ekwakheni upende, i-hydroxyethyl cellulose (HEC) iyisilungisi esivamile sokujiya kanye ne-rheology esingathuthukisa ukuzinza kokugcina, ukulinganisa kanye nezakhiwo zokwakhiwa kopende. Ukuze kufakwe i-hydroxyethyl cellulose kupende futhi kuqinisekiswe ukuthi isebenza kahle, izinyathelo ezithile kanye nezinyathelo zokuqapha kudingeka zilandelwe. Inqubo ethile yile elandelayo:
1. Izakhiwo ze-hydroxyethyl cellulose
I-Hydroxyethyl cellulose iyi-polymer engeyona i-ionic encibilikayo emanzini enezakhiwo ezinhle kakhulu zokujiya, ukwakha ifilimu, ukugcina amanzi, ukumiswa kanye nokuxubha. Ivame ukusetshenziswa kumapende asekelwe emanzini, izinamathiselo, izinto zobumba, uyinki neminye imikhiqizo. Itholakala ngokufaka amanye amaqembu e-hydroxyl esikhundleni samaqembu e-cellulose molecular chain ngamaqembu e-hydroxyethyl, ngakho-ke inokuncibilika kwamanzi okuhle.
Imisebenzi eyinhloko ye-HEC kupende yile:
Umphumela wokujiya: Khulisa ukujiya kopende, uvimbele upende ukuthi ungawi, futhi wenze ube nezakhiwo ezinhle kakhulu zokwakha.
Umphumela wokumiswa: Ingahlakazeka ngokulinganayo futhi izinze izinhlayiya eziqinile njengemibala kanye nezigcwalisi ukuze zingazinzi.
Umphumela wokugcina amanzi: Thuthukisa ukugcinwa kwamanzi kwefilimu yokumboza, wandise isikhathi sokuvula, futhi uthuthukise umphumela wokumanzisa wepende.
Ukulawulwa kwe-Rheology: lungisa ukugeleza kanye nokulinganisa kwesembozo, futhi uthuthukise inkinga yophawu lwebhulashi ngesikhathi sokwakha.
2. Izinyathelo zokwengeza ze-hydroxyethyl cellulose
Isinyathelo sangaphambi kokuncibilika Ekusebenzeni kwangempela, i-hydroxyethyl cellulose idinga ukuhlakazwa ngokulinganayo futhi ichitheke ngenqubo yangaphambi kokuncibilika. Ukuze kuqinisekiswe ukuthi i-cellulose ingadlala indima yayo ngokugcwele, ngokuvamile kunconywa ukuthi uyincibilikise emanzini kuqala, kunokuyifaka ngqo ephepheni. Izinyathelo ezithile yilezi ezilandelayo:
Khetha isinyibilikisi esifanele: ngokuvamile kusetshenziswa amanzi angenawo ama-ion njengesinyibilikisi. Uma kunezinye izinyibilikisi eziphilayo ohlelweni lokumboza, izimo zokuncibilika zidinga ukulungiswa ngokwezakhiwo zesinyibilikisi.
Fafaza kancane i-hydroxyethyl cellulose: Fafaza kancane futhi ngokulinganayo i-hydroxyethyl cellulose powder ngenkathi uvuselela amanzi ukuze uvimbele ukuhlangana. Ijubane lokuvuselela kufanele lihambe kancane ukuze ugweme ukunciphisa izinga lokuncibilika kwe-cellulose noma ukwakha "ama-colloid" ngenxa yamandla amakhulu okusika.
Ukuncibilika Okumi: Ngemva kokufafaza i-hydroxyethyl cellulose, idinga ukushiywa ime isikhathi esithile (ngokuvamile imizuzu engama-30 kuya emahoreni amaningana) ukuqinisekisa ukuthi i-cellulose ivuvukele ngokuphelele futhi incibilike emanzini. Isikhathi sokuncibilika sincike ohlotsheni lwe-cellulose, izinga lokushisa le-solvent kanye nezimo zokuxubha.
Lungisa izinga lokushisa lokuncibilika: Ukwandisa izinga lokushisa kusiza ukusheshisa inqubo yokuncibilika kwe-hydroxyethyl cellulose. Ngokuvamile kunconywa ukulawula izinga lokushisa lesisombululo phakathi kuka-20℃-40℃. Izinga lokushisa eliphakeme kakhulu lingabangela ukuncibilika kwe-cellulose noma ukuncibilika kwesisombululo.
Ukulungisa inani le-pH lesisombululo Ukuncibilika kwe-hydroxyethyl cellulose kuhlobene kakhulu nenani le-pH lesisombululo. Ngokuvamile kuncibilika kangcono ngaphansi kwezimo ezingathathi hlangothi noma ezine-alkaline kancane, ngenani le-pH eliphakathi kuka-6-8. Ngesikhathi senqubo yokuncibilika, inani le-pH lingalungiswa ngokungeza i-ammonia noma ezinye izinto ezine-alkaline njengoba kudingeka.
Ukwengeza isixazululo se-hydroxyethyl cellulose ohlelweni lokumboza Ngemva kokuncibilika, engeza isixazululo ekumbozeni. Ngesikhathi senqubo yokwengeza, kufanele sengezwe kancane futhi sivuselelwe njalo ukuqinisekisa ukuxubana okwanele ne-matrix yokumboza. Ngesikhathi senqubo yokuxuba, kuyadingeka ukukhetha isivinini esifanele sokuxuba ngokwezinhlelo ezahlukene ukuvimbela uhlelo ekuqhekekeni kwe-foam noma i-cellulose ngenxa yamandla amakhulu okushefa.
Ukulungisa i-viscosity Ngemva kokufaka i-hydroxyethyl cellulose, i-viscosity ye-coating ingalawulwa ngokulungisa inani elingeziwe. Ngokuvamile, inani le-hydroxyethyl cellulose esetshenzisiwe liphakathi kuka-0.3%-1.0% (uma kuqhathaniswa nesisindo esiphelele se-coating), futhi inani elithile elingeziwe lidinga ukulungiswa ngokuhlola ngokwezidingo zokwakheka kwe-coating. Inani eliphakeme kakhulu lokwengeza lingabangela ukuthi i-coating ibe ne-viscosity ephezulu kakhulu kanye nokugeleza okubi, okuthinta ukusebenza kokwakhiwa; kuyilapho ukwengeza okunganele kungase kungakwazi ukudlala indima yokuqina nokumiswa.
Yenza izivivinyo zokulinganisa kanye nokuqina kwesitoreji Ngemva kokufaka i-hydroxyethyl cellulose nokulungisa ifomula yokumboza, ukusebenza kokwakhiwa kokumboza kudinga ukuhlolwa, okuhlanganisa ukulingisa, ukugoba, ukulawula uphawu lwebhulashi, njll. Ngesikhathi esifanayo, ukuhlolwa kokuqina kwesitoreji sokumboza kuyadingeka futhi ukuze kubonwe ukuthungwa kwengubo ngemva kokuma isikhathi esithile, ushintsho lwe-viscosity, njll., ukuhlola ukuqina kwe-hydroxyethyl cellulose.
3. Izinyathelo Zokuqapha
Vimbela ukuhlangana: Ngesikhathi senqubo yokuncibilika, i-hydroxyethyl cellulose kulula kakhulu ukuyimunca amanzi futhi ivuvuke, ngakho-ke idinga ukufafazwa emanzini kancane futhi kuqinisekiswe ukuthi ixutshwe ngokwanele ukuze kuvinjelwe ukwakheka kwamaqhubu. Lokhu kuyisixhumanisi esibalulekile ekusebenzeni, ngaphandle kwalokho kungathinta izinga lokuncibilika kanye nokufana.
Gwema amandla aphezulu okusika: Uma ufaka i-cellulose, isivinini sokuvuselela akufanele sibe phezulu kakhulu ukuze ugweme ukulimaza uchungechunge lwama-molecule e-cellulose ngenxa yamandla amaningi okusika, okuholela ekunciphiseni ukusebenza kwalo kokujiya. Ngaphezu kwalokho, ekukhiqizweni kokumboza okulandelayo, ukusetshenziswa kwemishini yokusika ephezulu kufanele futhi kugwenywe ngangokunokwenzeka.
Lawula izinga lokushisa lokuncibilika: Lapho kuncibilika i-hydroxyethyl cellulose, izinga lokushisa lamanzi akufanele libe phezulu kakhulu. Ngokuvamile kunconywa ukuthi ulilawule ku-20℃-40℃. Ngaphansi kwezimo zokushisa okuphezulu, i-cellulose ingase yonakale, okuholela ekunciphiseni komphumela wayo wokujiya kanye nokuthamba kwayo.
Ukugcinwa kwesixazululo: Izixazululo ze-Hydroxyethyl cellulose ngokuvamile zidinga ukulungiswa futhi zisetshenziswe ngokushesha. Ukugcinwa kwesikhathi eside kuzothinta ukujiya nokuqina kwayo. Ngokuvamile kunconywa ukulungisa ikhambi elidingekayo ngosuku lokukhiqizwa kopende ukuze kugcinwe ukusebenza kwalo okuhle kakhulu.
Ukwengezwa kwe-hydroxyethyl cellulose kupende akuyona nje inqubo elula yokuxuba umzimba, kodwa futhi kudinga ukuhlanganiswa nezidingo zangempela zenqubo kanye nemininingwane yokusebenza ukuqinisekisa ukuthi izakhiwo zayo zokuqina, ukumiswa kanye nokugcinwa kwamanzi zisetshenziswa ngokugcwele. Ngesikhathi senqubo yokwengeza, naka isinyathelo sangaphambi kokuncibilika, ukulawulwa kwezinga lokushisa lokuncibilika kanye nenani le-pH, kanye nokuxuba okugcwele ngemva kokwengeza. Le mininingwane izothinta ngqo ikhwalithi kanye nokuqina kokusebenza kopende.
Isikhathi sokuthunyelwe: Septhemba-19-2024