I-HPMC Chinese Igama le-Hydroxypropyllyllyllylyllylyl methylliose, uhlobo olungelona olu-ionic, ku-ford worder ovame ukusetshenziswa njenge-ejenti yokugcinwa kwamanzi, yiyona esetshenziswa kakhulu yokugcina amanzi ngodaka.
Inqubo yokukhiqiza ye-HPMC ikakhulukazi i-fiber yekotini (yasekhaya) ngemuva kwe-alkalization, i-etherization kanye nesizukulwane semikhiqizo ye-ether ether yama-polysaccharide. Akunankokhiso futhi akwabili nama-ion akhishwe kwizinto eziqinisekisiwe, futhi ukusebenza kwawo kuzinzile. Intengo ibuye iphansi kunezinye izinhlobo ze-cellulose ether, ngakho-ke isetshenziswa kabanzi ngodaka oluhlanganisiwe olomile.
Umsebenzi we-Hydroxypropyllylylylylylylylylylylylylylls (ukuqina) Ukugcinwa kwamanzi nakho kuyisici esibaluleke kunazo zonke, esisiza ukugcina inani lamanzi akhululekile kudaka, ukuze ukwakhiwa kodaka, izinto zokufakazelo zibe nesikhathi esithe xaxa sokuhlanza kahle. (Ukugcinwa kwamanzi) igesi yayo, kungaletha ama-bubble amancane afanayo, kuthuthukise ukwakhiwa kodaka.
Lapho kukhula khona i-viscoxyprotity methyl cellulose ether, ngcono ukugcinwa kwamanzi. I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC. Njengamanje, abakhiqizi be-HPMC abahlukene basebenzisa izindlela ezahlukahlukene nezinsimbi ukukala ukubonakala kwe-HPMC. Izindlela eziphambili zifaka iHaakerotovisko, i-HIPPLER, UBBELOHDE neBrookfield.
Ngomkhiqizo ofanayo, imiphumela ye-viscosity elinganiselwe izindlela ezahlukahlukene iyahlukahluka kakhulu, futhi eminye yande. Ngakho-ke, lapho uqhathanisa i-viscosity, kufanele yenziwe phakathi kwendlela efanayo yokuhlola, kufaka phakathi izinga lokushisa, i-rotor, njll.
Ngobukhulu bezinhlayiyana, abahle kakhulu, okungcono ukugcinwa kwamanzi. Ngemuva kwezinhlayiya ezinkulu ze-cellulose ether thintana namanzi, ingaphezulu lincibilika ngokushesha futhi lakha ijeli lokusonga lokho kuvimbela ama-molecule wamanzi ukuthi aqhubeke nokungena ngaphakathi. Kwesinye isikhathi, ngisho nesikhathi eside evusa amadlingozi angeke ahlakazeke ngokulinganayo futhi ancibilike, akha isixazululo esinamafu ane-flocculent noma ukuqina. Ukugcinwa kwamanzi kwe-cellulose ether kuyathinteka kakhulu, futhi i-solubity ingesinye sezici zokukhetha i-cellulose ether. I-Fechness nayo iyinkomba yokusebenza ebalulekile ye-methyl celtulose ether. I-MC ye-MC yoMnyango omile idinga i-powder, okuqukethwe kwamanzi okuphansi, nobuciko futhi kudinga ama-20% ~ 60% usayizi wezinhlayiyana okungaphansi kwe-63um. Ubuhle buthinta i-solubility ye-hydroxypropylylylylylylylylylylylylylykyl methyl celtulose ether. I-COARSER MC imvamisa i-granular futhi ilulazeke kalula emanzini ngaphandle kokuqunjelwa, kepha izinga lokuchithwa lihamba kancane futhi alilungele ukusetshenziswa ku-Dester Powder Botport. Ku-fortar elomile, i-MC ihlakazeka phakathi kokuhlanganiswa, i-filler enhle, usimende nezinye izinto zokwehla, futhi kuphela i-powder eyanele engakugwema ukubonakala kwe-methyl cellulose ether agglomore lapho kungezwa amanzi. Lapho i-MC ichithwa emanzini, kunzima ukuncibilikisa ekusakazweni. I-MC ene-Cooseber Depness ayigcini nje ngokuchitheka, kepha futhi inciphisa amandla endawo kadaka. Lapho kwakhiwa udaka olomile endaweni enkulu, kukhonjiswa ukuthi ijubane lokuphaka kodaka elomile lwasendaweni lincishiswa kakhulu, futhi ukuqhekeka kubangelwa isikhathi esihlukile sokuvuka. Okolweni lokudubula ngokwakha imishini ngokwakha imishini, ngoba isikhathi sokuxuba sifushane, izidingo zobuciko ziphakeme.
Ngokuvamile ukukhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Kodwa-ke, ukukhuphuka kwesisindo esiphakeme, isisindo se-molecular se-MC, futhi ukuqina kwe-MC kuzokwehla ngokufanele, okunomthelela ongemuhle ekusebenzeni nasekusebenzeni koMunga. Lapho kuphakama i-viscosity, kusobala ukuthi kube khona umphumela wokuqina wodaka, kepha awunakulingana nobudlelwano. Lapho kuphakama i-viscosity, kugcwele udaka olumanzi, phakathi nokwakhiwa, ukusebenza kwe-scraper enamathela nokunamathela okuphezulu kuya engxenyeni engezansi. Kepha akusizi ukwandisa amandla wesakhiwo sodumo olumanzi uqobo. Okungukuthi, ngesikhathi sokwakha, ukusebenza kwe-anti-droop akubonakali. Ngokuphambene nalokho, ezinye izithako ze-methyl cellulose eziguquliwe ezinokuqonda okuphakathi nendawo okuphansi zinokusebenza okuhle kakhulu ekuthuthukiseni amandla wesakhiwo sodaka lwamanzi.
Ukugcinwa kwamanzi kwe-HPMC kuhlobene nokushisa okusetshenzisiwe, futhi ukugcinwa kwamanzi kwe-methyl cellulose ether kuyancipha ngokuvuka kwamazinga okushisa. Kepha ohlelweni lwangempela lwezinto ezibonakalayo, izindawo eziningi ezomile zodaka zivame ukuba semazingeni aphezulu (aphezulu kuneziqu ezingama-40) ngaphansi kwesimo sokwakha ilanga ehlobo, okuvame ukusheshisa ukwelashwa ngosimende kanye nodaka olomile. Ukwehla kwamanani okugcina amanzi kuholela emveni osobala wokuthi ukukhiqizwa nokuphikiswa kokuqhekeka kuyathinteka. Ngaphansi kwalezo zimo, kubaluleke kakhulu ukunciphisa ithonya lezinto zokushisa. Kulokhu, i-methyl hydroxyethyyl cellulose ether additive okwamanje ithathwa njengendlela ephambili yentuthuko yezobuchwepheshe. Yize akhuphule umthamo we-methylyethyethyls dosage (ifomula yehlobo), ukumelana nokwakha nokuqhekeka namanje akukwazi ukuhlangabezana nezidingo zokusebenzisa. I-MC ngokusebenzisa ukwelashwa okukhethekile, njengokuthuthukisa izinga lokuthethelwa, kungenza ukumiswa kwayo kwamanzi okushisa ukuze kugcinwe umphumela ongcono, ukuze kunikeze ukusebenza okungcono ngaphansi kwezimo ezinzima.
I-General HPMC inokushisa kwe-gel, ingahlukaniswa ngezinhlobo ezingama-60, izinhlobo ezingama-65, izinhlobo ezingama-75. Owesimende ojwayelekile olungiselelwe olungiselelwe ngamabhizinisi wesihlabathi somfula kwadingeka akhethe i-HPMC engu-75 nge-GEL lokushisa eliphakeme. Umthamo we-HPMC akufanele abe phezulu kakhulu, ephezulu kakhulu izokwenza ukuthi amanzi afune owesimate akhuphuke, kepha futhi anamathele, ukusetha isikhathi isikhathi eside kakhulu, kuthinta ukwakhiwa. Imikhiqizo ehlukene yodaka Khetha i-Viscutity HPMC ehlukile, ungasebenzisi kabi i-HPMC ephezulu ye-HPMC. Ngakho-ke, yize imikhiqizo ye-hydroxypropyllyly ilungile, kepha ukusetshenziswa kokudumisa okuhle kuphela, khetha i-HPMC efanelekile yomthwalo wemfanelo oyimfanelo wabasebenzi belebhu yebhizinisi. Njengamanje, kunabathengisi abaningi abangekho emthethweni e-HPMC eyinkimbinkimbi, ikhwalithi ayimpofu, ilebhu kufanele ikhethe uhlobo oluthile lwe-cellulose, yenza umsebenzi omuhle kulolo cwaningo, ukuqinisekisa ukuqina kwemikhiqizo yodaka, ungafisi ukulahleka okungadingekile.
Isikhathi sePosi: Feb-20-2025