I-Dispering Hydroxyyethyl Cellulose (HEC) ukuhlinzwa okudinga ukuthi kulandelwe izinyathelo ezithile, ikakhulukazi kwabezindaba ezinamanzi. Ukuhlakazeka okuyikho nezinyathelo zokuchithwa kungaqinisekisa umphumela wayo wokusebenzisa. I-Hydroxyyethyl cellulose isetshenziswa kabanzi kuzimbali, anamathela, izimonyo, amasimu kawoyela kanye nezinye izinkambu ngenxa yokuqina kwayo, ukuzinza, kwakha amafilimu, neminye imisebenzi.
Isingeniso seHydroxYethyl Cellulose
I-Hydroxyyethyl celtulose iyi-ether engenawo amanzi e-mollulose eyenziwe ngamanzi enziwe ukuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Ine-soubity enhle kakhulu nemiphumela yokuqina, futhi ingakha isisombululo esibonakalayo, esibonakalayo samanzi. I-HEC futhi inokubekezelelana ngamanzi okusawoti okuhle kakhulu, ngakho-ke ilungele ikakhulukazi izindawo zamanzi olwandle noma amasistimu aqukethe usawoti. Ngasikhathi sinye, ingahlala iqinile ngaphezu kobubanzi be-PH futhi ayithintwa yi-acid ne-alkali.
Umgomo wokuhlakazeka we-hydroxyethyl cellulose
Emanzini, inqubo yokuhlakazeka ye-hydroxyethyl celtulese ifaka izinyathelo ezimbili eziyinhloko: Ukuhlakazeka okumanzi nokuchithwa okuphelele.
Ukuhanjiswa okumanzi: Le yinqubo yokwenza izinhlayiya ze-hydroxyethyethyl cellulose zisatshalaliswe ngamanzi. Uma i-HEC ingezwa ngqo emanzini, izodonsa amanzi ngokushesha futhi yakha ama-clumps anamathela ebusweni, avimbela ukuchithwa okuqhubekayo. Ngakho-ke, ngesikhathi senqubo yokuhlakazeka, ukwakheka kwama-clumps anjalo kufanele kugwenywe ngangokunokwenzeka.
Ukuchithwa okuphelele: Ngemuva kokumanzisa, ama-molecule we-cellulose kancane kancane ahluka kancane emanzini ukuze akhe isixazululo esifanayo. Ngokuvamile, i-hec inciphisa kancane futhi ingathatha amahora amaningi noma isikhathi eside, ngokuya ngamazinga okushisa kwamanzi, izimo ezivusa ama-pullulose.
Izinyathelo zokuhlakazeka ze-hydroxyethyl cellulose
Ukuqinisekisa ukuthi i-Hydroxyyethyl cellulose ingahlakazeka ngokulinganayo, okulandelayo kusetshenziswa izinyathelo zokuhlakazwa ezijwayelekile:
1. Khetha izinga lokushisa lamanzi afanele
Ukushisa kwamanzi kuyinto ebalulekile ethinta ukuhlakazwa kanye nokuchithwa kwe-hydroxyethyl cellulose. Ngokuvamile, amanzi abandayo noma amanzi okushisa asekamelweni afanelekile kakhulu okuchithwa. Amanzi afudumele (cishe ama-30- 40 ° C) asiza ukusheshisa ukuchitheka, kepha izinga lokushisa eliphakeme kakhulu (ngaphezulu kuka-50 ° C) kungadala ama-clumps ahlele ngesikhathi sokuchithwa, okuzothinta umphumela wokuhlakazeka.
2. Ukwelashwa kwangaphambi kokumanzisa
I-Hydroxyyethyl celtulose ivame ukwakha ama-clumps ngokushesha emanzini, ngakho-ke ukwelashwa okumanzi kwangaphambili kuyindlela ephumelelayo yokuhlakazeka. Ngomhla we-HEC wokuqala nge-organ-soluble organ solvent (njenge-ethanol, i-plyylene glycol, njll.), I-HEC ingenakulinganiswa ngokulinganayo ukuyivimba ngokuqondile amanzi futhi akha izigaxa. Le ndlela ingathuthukisa kakhulu ukusebenza kahle okulandelayo.
3. Lawula isivinini sokungezwa
Lapho kusabalalisa i-hydroxyethyl cellulose, i-powder kufanele ithululelwe emanzini kancane futhi ngokulinganayo ngenkathi ivusa. Ijubane lesivuseleli akufanele libe phezulu kakhulu ukuvikela amagwebu ngokweqile. Uma ijubane lokungezwa lishesha kakhulu, i-HEC kungenzeka ingahlakazwa ngokugcwele, yakha ama-miclelles angalingani, azothinta inqubo eyalandela yokuqothula.
4.
Ukuvuselela kungenye yezinyathelo ezibaluleke kakhulu kwinqubo yokuhlakazeka. Kunconywa ukusebenzisa umgqugquzeli onesivinini esiphansi ukuvusa ngokuqhubekayo ukuze uqinisekise ukuthi i-hydroxyethyl cellulose ingasatshalaliswa ngokulinganayo kulo lonke uhlelo lwe-liquid. Ukuvuselelwa kwesivinini esiphakeme kungadala i-hec ibe yi-agglomerate, yandise isikhathi sokuqothula, futhi ikhiqize ama-bubble, ithinta ukucaca kwesixazululo. Ngokuvamile, isikhathi sokuvuselela kufanele silawulwe phakathi kwemizuzu engama-30 namahora ambalwa, kuya ngemishini esetshenzisiwe kanye nokushisa kwamanzi.
5. Faka ama-electrolyte noma ulungise i-ph
Kwesinye isikhathi, inqubo yokuqothula ye-hydroxyethyl celtulese ingasheshiswa ngokungeza inani elifanele lama-electrolyte (anjengesawoti) noma ukuguqula inani le-PH. Le ndlela ilungele ikakhulukazi izinhlelo zokusebenza ezinezidingo eziphakeme zejubane lokuqothula. Kodwa-ke, inani le-electrolyte noma i-PH lidinga ukulungiswa ngokucophelela ukuze ligweme ukuthinta ukusebenza kwe-HEC.
Izinkinga ezijwayelekile kanye ne-countermeasure
I-Agglomeralier: Inkinga evame kakhulu ye-HEC i-agglomeration ngesikhathi sokuchithwa, okuholela ekuchithelweni okungaphelele. Ukuze ugweme lokhu, ungasebenzisa indlela yangaphambi kokumanzisa noma uhlanganise i-HEC nezinye izinto eziyimpuphu (ezifana nama-filler, imibala, njll.) Bese uyifaka emanzini.
Izinga lokuchithwa linciphile Ngasikhathi sinye, ungazama futhi ukusebenzisa i-HEC esheshayo, ebiphathwe ngokukhethekile ukuncibilikisa ngokushesha ngesikhathi esifushane.
Inkinga ye-Bubble: Ama-Bubble akhiqizwa kalula ngesikhathi sokuvusa, okuthinta ukucaca kanye nokulinganiswa kwesixazululo kwesixazululo. Kulokhu, ukunciphisa isivinini sokuvusa noma ukungeza inani elifanele lomenzeli wokungcolisa kunganciphisa ngempumelelo ukwakheka kwama-bubble.
Ukuqapha kohlelo lokusebenza kwe-Hydroxyethyl cellulose
Kuzinhlelo zokusebenza ezisebenzayo, indlela efanelekile yohlobo nesengezo ye-hydroxyethyl celtulose kufanele ikhethwe ngokuya ngezidingo zezinhlelo ezahlukene. Isibonelo, embonini yezambane, i-Hydroxyyethyl cellulose ayisetshenziswa kuphela njengomuntu omkhulu, kepha futhi ingathuthukisa i-Rheology, amafilimu okwakha ukuqina kokugcina ukuhlanganiswa. Embonini kawoyela, ukumelana nosawoti kwe-HEC kubaluleke kakhulu, ngakho-ke ukukhetha kudinga ukulungiswa ngokuya ngezimo ezaphansi.
Ukusabalalisa i-Hydroxyyethyl celtulose kuyinto yokusebenza kwezobuchwepheshe kakhulu, futhi kuyadingeka ukuthi ukhethe indlela efanelekile yokusakaza ngokuya ngezimo ezihlukile zohlelo lokusebenza. Ngokulawula izinga lokushisa lamanzi, okumanzi kwangaphambili, okuvuselelayo okunengqondo nokungeza izithasiselo ezifanele, kungaqinisekisa ukuthi i-hydroxyethyl cellulose ihlakazeka ngokulinganayo futhi ichithwe ngokuphelele emanzini, ngakhulisa ngokuphelele imisebenzi yayo yokuqina kanye nokuzinza.
Isikhathi Sokuthumela: Oct-23-2024