munye. Umehluko phakathi kwe-hydroxcellopyrlose ye-aduldypropyl (HPMC) kanye ne-hydroxypropprosel pure methylcellulose (HPMC)
1. Ukubukeka: I-Hydroxyproppropylylylylyl hpmc ibukeka i-fluffy futhi inobunzima obuphansi obuphansi, isukela ku-0.3-0.4g / ml; I-HydroxyProppropylyl hpMC ye-alelylyprose i-fluidity enobunzima futhi izizwe inzima, futhi kunomehluko omkhulu ngokubukeka kusuka kumkhiqizo wangempela.
2 Ngenkathi i-hydroxyproppropyll hpmc i-HPMC ingabhekwa njengezinsimbi ze-granular noma amakristalu ngaphansi kwesibonakhulu noma ingilazi ekhulisa.
3. I-ODOR: I-Pure Hydroxyproppropyll hpmc ayikwazi ukuhogela iphunga le-ammonia, isitashi notshwala; I-Hydroxyproppropyl hpmc i-HPMC ye-AleelyPose
I-4 Isixazululo se-Hydroxyproppropyl hpmc sikhangise iTurbid, kanti izinga lokugcina amanzi linzima ukufinyelela kuma-80%.
Okwesibili, ukugcinwa kwamanzi kwe-hydroxypropylllylyll methylcellose HPMC, hlukanisa nezinzuzo nokubi:
Ukugcinwa kwamanzi kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether. Izici ezinjengokushisa komoya, izinga lokushisa nejubane lokucindezela komoya lizothinta izinga lokuzithambisa kwamanzi emikhiqizweni yodaka kasimende nemikhiqizo esekwe e-gypsum. Ngakho-ke, ngezinkathi ezahlukahlukene zonyaka, kukhona umehluko othile emthethweni wokugcina amanzi wemikhiqizo ngenani elifanayo le-HPMC elingeziwe. Ekwakhiweni okuthize, umphumela wokugcinwa kwamanzi we-slurry ungashintshwa ngokwanda noma ukwehlisa inani le-HPMC elingeziwe. Imikhiqizo ye-Hydroxyproppropylyl hpmc ingaxazulula inkinga yokubuyiselwa kwamanzi ngaphansi kokushisa okuphezulu.
I-methylcellulose ephezulu kakhulu ingahlakazeka ngendlela efanayo nangokufanelekile emikhiqizweni esekwe omanzini kanye nemikhiqizo esekwe e-gypsum, futhi ihlanganise amafilimu aqinile, futhi umswakama osongelwe kancane, kanye nokusabela komswakama kwale nto akwakheka kuyo kuqinisekisa amandla e-bond namandla acindezelayo wezinto ezibonakalayo. I-Hydroxypyproppropylk ephezulu ye-methylcellose hpmc, ukufana kwayo kuhle kakhulu, amaqembu ayo we-methopp kanye ne-hydroxypropopoxy asatshalaliswa ngokulandelana kwama-athomu ukuze ahlobane namanzi aboshwe ngamanzi aboshwe ngamanzi, ngesimo sezulu esiphakeme sokushisa futhi uzuze ukugcinwa kwamanzi okuphezulu.
Ngakho-ke, ekwakhiweni kwehlobo lokushisa okuphezulu, ukuze kufinyelelwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo ye-HPMC ephezulu ngamanani anele ngokuya ngefomula, okuncishisiwe, ukuqhekeka, okukhohlisayo nokuchichima okubangelwa ukomisa ngokweqile. Izinkinga, kepha futhi zandisa ubunzima bezisebenzi. Njengoba amazinga okushisa ehla, inani lamanzi we-HPMC angeziwe angancishiswa kancane kancane, futhi umphumela wokugcina amanzi afanayo angatholakala.
3. Ukuchithwa kwe-hydroxypropyllykl methylcellulose hpmc
Embonini yezokwakha, i-Hydroxypropyl methyllellulose HPMC ivame ukufakwa emanzini angathathi hlangothi, futhi umkhiqizo we-HPMC uchithwa wedwa ukwahlulela izinga lokuchithwa. Ngemuva kokufakwa emanzini angathathi hlangothi kuphela, umkhiqizo onama-clumps ngokushesha ngaphandle kokuhlakazeka ngumkhiqizo ngaphandle kokwelashwa komhlaba; Ngemuva kokubekwa emanzini angathathi hlangothi kuphela, umkhiqizo ongahlakazeka futhi ungabi yisiqu ndawonye ngumkhiqizo onokwelashwa komhlaba. Lapho ingaphezulu le-hydroxcelpropprosel hpmc lihlanjululwa wedwa, lihlanjululwe linye, lihlanganiswe nenhlayiya yalo lincibilika futhi libangela amafilimu ngokushesha, okubangela amanzi ukuba lingabingeli ezinye izinhlayiya, okuholela njengamanje ebizwa ngokuthi ukuqondiswa okusheshayo kumkhiqizo wemakethe.
Izinhlayiya zemikhiqizo ye-Surdyyproppropyl hpmc, emanzini angathathi hlangothi, izinhlayiya ngazinye zingahlakazeka ngaphandle kwe-agglomeration, kepha ukuhlakanipha komkhiqizo ngeke ngokushesha. Ngemuva kokufaka isikhathi esithile, isakhiwo samakhemikhali sokwelashwa komhlaba sibhujiswa, futhi amanzi angancibilikisa izinhlayiya ze-HPMC. Ngalesi sikhathi, izinhlayiya zomkhiqizo ziye zahlakazeka ngokuphelele futhi zamunca amanzi anele, ngakho-ke uMkhiqizo ngeke uze u-agglomerate noma u-agglomerate ngemuva kokuchithwa. Ijubane lokuhlakazeka kanye nejubane lokuchithwa kuncike ekuthini ukwelashwa komhlaba. Uma ukwelashwa komhlaba kuncane, ijubane lokuhlakazeka lihamba kancane futhi ijubane lokunamathela liyashesha; Ngenkathi umkhiqizo onokwelashwa okujulile kwelashwa kunesivinini esisheshayo sokuhlakazeka kanye nesivinini sokunamathela kancane. Uma ufuna ukwenza lolu chungechunge lwemikhiqizo luhlanjululwe ngokushesha kulesi simo, ungalahla inani elincane lezinto ze-alkaline lapho zichithwa zodwa. Imakethe yamanje ivame ukubizwa ngemikhiqizo esheshayo. Izici zemikhiqizo ephethwe yi-HPMC ephethwe ingaphezulu yilezi: Esikhaleni esinamanzi, izinhlayiya zingasakazeka komunye nomunye, zingancipha ngokushesha e-Alkaline State, futhi zincibilike kancane endaweni engathathi hlangothi ne-acidic.
Izici ze-hydroxcellulose ze-mettypypropyly methyllulose hpmc yilezi: I-nexleartic inhlanganisela ngokushesha okukhulu ku-acidic, alkali, kanye nokungathathi hlangothi, kepha ayikwazi ukuhlakazeka phakathi kwezinhlayiya eziwuketshezi, okuholela ekuqothulweni nasekuqoqweni kwe-agglomeration. Ekusebenzeni kwangempela, ngemuva kokuhlakazwa ngokomzimba kwalolu chungechunge lwemikhiqizo nezinhlayiya eziqinile njenge-awch yenjoloba, usimende, isihlabathi, njll. Lapho kunesidingo sokuncibilikisa imikhiqizo ye-HPMC ngokwahlukana, lolu chungechunge lwemikhiqizo kufanele lusetshenziswe ngokuqapha, ngoba lizokweqaqana futhi libambe ndawonye. Uma kudingeka ukuncibilikisa umkhiqizo we-hydlcelloppropyrlose ongekho emvuleni we-hpmc ngokwahlukana, kudingeka ahlakazeke ngokufana namanzi ashisayo angama-95 c, bese apholile ukuncibilikisa.
Ekusebenzeni kwangempela kokukhiqizwa, lolu chungechunge lwemikhiqizo luvame ukuncibilika ngemuva kokuhlakazwa nezinye izinto eziqinile eziyizinhlayiya eziqinile ngaphansi kwezimo ze-alkali ngayinye, futhi izinga lokuchithwa kwalo alifani nakwezemikhiqizo engeshwa. Ilungele ukusetshenziswa emikhiqizweni echithwe yodwa, ngaphandle kokuhamba noma izigaxa. Imodeli ethile yomkhiqizo ingakhethwa ngokuya ngezinga lokuchithwa okudingwa ukwakhiwa.
Ngesikhathi senqubo yokwakha, noma ngabe yi-slurry kakhudlwana noma i-gypsum esekelwe ku-gypsum, iningi lazo liyizinhlelo ze-alkaline, kanti inani le-HPMC elingeziwe lincane kakhulu, elingahlakazwa ngokulinganayo phakathi kwalezi zinhlayiya. Lapho amanzi engeziwe, i-HPMC izoncibilika ngokushesha.
Isikhathi sePosi: Dec-02-2022