I-HEC (i-Hydroxyethylcellulose) iyi-polymer encibilika emanzini esetshenziswa kakhulu enezinhlobonhlobo zezicelo emikhiqizweni yezimboni nezabathengi, ikakhulukazi ezimbonini zokumboza, zezimonyo, ezemithi nezokudla. Inqubo ye-hydration ye-HEC ibhekisela enkambisweni lapho i-HEC powder ithatha khona amanzi futhi ichitheke emanzini ukuze yenze isisombululo esifanayo.
Izinto ezithinta isikhathi se-hydration se-HEC
Isikhathi se-hydration se-HEC asinqunyelwe, kodwa sithinteka yizici eziningi. Ngokuvamile, isikhathi se-hydration se-HEC emanzini singahluka kusuka emaminithini ambalwa kuya emahoreni ambalwa. Okulandelayo yizici eziyinhloko ezithinta isikhathi se-HEC hydration:
Isisindo samangqamuzana kanye nezinga lokushintshanisa i-HEC: Isisindo samangqamuzana kanye nezinga lokushintshwa kwe-HEC (izinga lokushintsha libhekisela ezingeni lapho amaqembu e-hydroxyethyl athatha indawo yamaqembu e-hydroxyl ku-molecule ye-cellulose) izothinta kakhulu izinga layo lokugeleza. I-HEC enesisindo esikhulu samangqamuzana ithatha isikhathi eside ukuze i-hydrate, kuyilapho i-HEC enezinga eliphakeme lokufaka esikhundleni ijwayele ukuba ne-solubility engcono yamanzi futhi isivinini se-hydration sizosheshisa ngokufanele.
Izinga lokushisa lamanzi: Izinga lokushisa lamanzi lingenye yezinto ezibalulekile ezithinta isikhathi se-HEC se-hydration. Ngokuvamile, amazinga okushisa aphakeme amanzi angasheshisa inqubo ye-hydration ye-HEC. Isibonelo, emanzini afudumele, i-HEC ikhipha amanzi ngokushesha kunasemanzini abandayo. Nokho, izinga lokushisa lamanzi eliphakeme kakhulu lingase libangele i-HEC ukuba incibilike ngokungalingani futhi yakhe izigaxa, ngakho ngokuvamile kunconywa ukulawula izinga lokushisa lamanzi phakathi kuka-20°C no-40°C.
Isivinini esishukumisayo nendlela: Ukugqugquzela kuyindlela ebalulekile yokukhuthaza ukugeleza kwamanzi kwe-HEC. Ngokusheshisa isivinini esishukumisayo, isikhathi sokukhipha amanzi se-HEC siba sifushane. Nokho, ukweqisa kungase kwethule amabhamuza amaningi kakhulu, kuthinte ikhwalithi yesixazululo. Ngokuvamile kunconywa ukuthi wengeze i-HEC powder kancane kancane ngokushukumisa isivinini esiphansi ukuze ugweme ukwakheka kwama-agglomerate nokugcina ukunyakazisa okusesilinganisweni kuyo yonke inqubo ye-hydration.
Inani le-pH lesisombululo: I-HEC izwela kancane kunani le-pH futhi isebenza kahle kakhulu endaweni engathathi hlangothi noma ene-acidic kancane. Ngaphansi kwezimo ze-pH eziyingozi kakhulu (njengama-acids aqinile noma izisekelo), ukuncibilika kwe-HEC kungase kuthinteke, ngaleyo ndlela kwandise isikhathi se-hydration. Ngakho-ke, ngokuvamile kunconywa ukwenza i-hydration ye-HEC endaweni eseduze ne-neutral pH.
Izindlela zokwelashwa kwangaphambili ze-HEC: Izindlela zokwelashwa ngaphambi kwesikhathi ezifana nokomisa, ukugaya, njll. zizophinde zithinte ukusebenza kwe-hydration ye-HEC. I-HEC powder ecutshungulwe kahle iyancibilika futhi ifake amanzi ngokushesha. Isibonelo, ukusabalalisa kwangaphambili i-HEC powder ku-ethanol noma i-glycerin ngaphambi kokuyengeza emanzini kunganciphisa kakhulu isikhathi sokugeleza.
Imibuzo Evame Ukubuzwa Ngesikhathi Senqubo ye-HEC Hydration
Phakathi nenqubo ye-hydration ye-HEC, ungase uhlangabezane nezinkinga ezivamile, ezivame ukuhlotshaniswa nendlela yokusebenza noma izimo zemvelo:
I-Agglomeration: Ngaphansi kwezimo zokusebenza ezingafanele, i-HEC powder ingase yakhe ama-agglomerations emanzini. Lokhu kuvame ukubangelwa ukuthi lapho i-HEC powder ihlangana namanzi, ungqimba lwangaphandle luthatha ngokushesha amanzi futhi luvuvuke, luvimbele ungqimba lwangaphakathi ukuthi lungathintani namanzi, ngaleyo ndlela lwakha ama-clumps. Lesi simo sandisa kakhulu isikhathi se-hydration futhi siholela ekuxazululeni inhomogeneity. Ukuze ugweme lokhu, ngokuvamile kunconywa ukuthi kancane kancane ufafaze ku-HEC powder ngenkathi uvuselela.
Inkinga yebhamuza: Ngaphansi kwamandla aphezulu okugunda noma ukunyakazisa okusheshayo, izixazululo ze-HEC zijwayele ukwethula inani elikhulu lamabhamuza. Lawa mabhamuza omoya angase athinte ikhwalithi yesixazululo sokugcina, ikakhulukazi uma esetshenziswa kumapende noma kuzimonyo. Ngakho-ke, ukugqugquzela okunamandla kufanele kugwenywe ngesikhathi senqubo ye-hydration, futhi ukwakheka kwama-bubbles kungancishiswa ngokungeza ama-defoamers.
Ukushintsha kwe-viscosity yesixazululo: I-viscosity yesisombululo se-HEC ikhula kancane kancane njengoba inqubo ye-hydration iqhubeka. Kwezinye izinhlelo zokusebenza, ezifana nokwakhiwa kwezingubo noma izinamathiselo, ukulawula i-viscosity kubalulekile. Uma isikhathi se-hydration side kakhulu, i-viscosity ingase ibe phezulu kakhulu, ithinte ukusebenza. Ngakho-ke, ukulawula okunembile kwesikhathi se-hydration kubalulekile ukuze uthole i-viscosity yesisombululo oyifunayo.
I-HEC Hydration in Practical Application
Ekusetshenzisweni okungokoqobo, inqubo ye-hydration ye-HEC ngokuvamile idinga ukuthuthukiswa ngokuhambisana nezinqubo ezithile zokukhiqiza kanye nezidingo zomkhiqizo. Isibonelo, ekubunjweni kwezimonyo, ukuze kutholwe ukuthungwa nokuzinza okufunayo, i-HEC ivame ukuchithwa ngaphambili emanzini afudumele bese ezinye izithako zengezwa kancane kancane. Ezingxenyeni zezakhiwo, kungase kudingeke ukulungisa isivinini esishukumisayo kanye nokushisa kwamanzi ukuze kusheshiswe inqubo ye-hydration ye-HEC, ngaleyo ndlela kuthuthukiswe ukusebenza kahle kokukhiqiza.
Isikhathi sokugeleza kwe-HEC siyinqubo eguquguqukayo futhi sithinteka ngokuphelele izici eziningi. Ezimweni ezihlukene zohlelo lokusebenza, idinga ukulungiswa futhi yenziwe kahle ngokuvumelana nezimo ezithile ukuze kuqinisekiswe ukuthi i-HEC ingafakwa emanzini ngokushesha nangokulinganayo futhi yakhe isixazululo esizinzile. Lokhu akusizi nje ukuthuthukisa ukusebenza kahle kokukhiqiza kodwa futhi kuqinisekisa ikhwalithi nokusebenza komkhiqizo wokugcina.
Isikhathi sokuthumela: Aug-23-2024