Ukuphezulu kwe-viscofity ye-hydroxypropyl methylceluplose, engcono umsebenzi wokugcina amanzi. I-Viscosity yiparamitha ebalulekileyo ye-HPMC. Okwangoku, abavelisi be-HPMC eyahlukeneyo basebenzisa iindlela ezahlukeneyo kunye nezixhobo zokulinganisa i-HPMC. Iindlela eziphambili ze-rotovisko, i-hoppler, ibbelohde kunye ne-brookfield.
Kwimveliso efanayo, iziphumo ze-viscosity zilinganiswe ngeendlela ezahlukeneyo zahluke kakhulu, kwaye ezinye ziphinda kabini umahluko. Ke ngoko, xa uthelekisa uVeksisity, qiniseka ukuba uyakwenza phakathi kweendlela ezahlukeneyo zovavanyo, kubandakanya neqondo lokushisa, i-rotor, njl.
Ubungakanani bentsumpa, imbumbulula isuntswana, kungcono ukugcinwa kwamanzi. Emva kwamasuntswana amakhulu e-Selersese Ether bangena ekunxibelelaneni namanzi, umphezulu uyanyibilika kwangoko ukwenza ijeli, esonge umxholo ukuthintela ukuqhubeka kweemolekyuli eziqhubekayo. . Ichaphazela kakhulu umthombo wokugcinwa kwamanzi kwi-ether yayo ye-ether, kwaye ukuluka kwenye yezinto zokukhetha i-selupelose. Ubuhle buyinto ebalulekileyo yentsebenzo ye-methyl selete. I-MC isetyenziselwa umgubo owomileyo kufuneka ube ngumgubo, ngomxholo wamanzi ophantsi, kwaye ukulunga kwanamanzi kufuna i-20% ukuya kwiipesenti ezingama-60 ukuya kwi-60% ye-paricle ukuba ingaphantsi kwe-63um. Ukulunga kuchaphazela ukunyibilisela kwe-hydroxypropy ye-methylcelcelcelgalose ether. I-Coarse MC ihlala inesibambile, kwaye kulula ukunyibilika emanzini ngaphandle kokuncitshiswa, kodwa ireyithi yokuchithwa icotha kakhulu, ngoko ayifanelekanga ukuba isetyenziswe kumdaka owomileyo. Ngomgubo owomileyo, i-MC ichithwayo phakathi kwezinto ezinesamente ezinjengee-agergates, iifilitha ezihle kunye nesamente. Kuphela i-powder eyaneleyo inokuphepha i-ageglomeration ye-Methyl Selete xa uxuba namanzi. Xa i-MC yongezwa ngamanzi ukunyibilikisa i-agegomerates, kunzima ukusasaza nokunyibilikisa. I-MC inomthi womdangazeli ayiphelelanga, kodwa ikwanciphisa amandla endawo yodaka. Xa udaka lomgubo owomileyo owakhiwe kwindawo enkulu, isantya sokunyangwa komgubo owomileyo we-powder uncitshisiwe kakhulu, kwaye ukuqhekeka kwenzeka ngenxa yamaxesha oliphi ixesha lokunyanga. Ngesitshizi sokutshiza esebenzisa ulwakhiwo ngoomatshini, ngenxa yexesha elifutshane elifunekayo, ukulunga kuyafuneka ukuba ngaphezulu.
Ngokubanzi, ukuphakama kwe-viscosity, eyona nto ilunge ngakumbi. Nangona kunjalo, ukuphakama kwe-viscofity kunye nokuphakathi kobunzima be-MC, ukuncitshiswa okufanayo kumoya wayo, onefuthe elibi kumandla kunye nezinto zokwakha zodaka. Ukuphakama kwe-viscofity, eyona nto icacileyo yokuthambisa kodaka, kodwa ayingqinelani. Ukuphelisa i-viscofity, obambeleyo obambelele kodaka lwamanzi. Ngexesha lolwakhiwo, iya kunamathela kwi-scraper kwaye inamathele kakhulu kwi-subtate. Kodwa ingenzi nto ingako yokwandisa amandla olwakhiwo lwesifungo esimanzi. Ngexesha lokwakha, ukusebenza kwentsebenzo yokuntywila ayicacanga. Ngokwahlukileyo koko, inxenye ye-viscosity ephantsi kodwa iguqulwe i-methyl ye-melsulose entsokuphumeze kakhulu ekuphuculeni amandla olwakhiwo lodaka lwamanzi.
Ixabiso elikhulu kwi-ete yeselsulose ongezwe kudaka, kungcono ukusebenza kokugcina amanzi, ukuphakama kwe-viscofity, eyona nto ibhetele.
Ukulunga kwe-HPMC kukwanempembelelo ethile ekuphepheni kwamanzi. Ngokubanzi, i-methyl selese tanges ngokubonisa ukufana okufanayo kodwa kwimeko eyahlukileyo, kwimeko yexabiso lokudibanisa, ukulungisa umthombo, owona mkhwa wokugcina amanzi.
Ukugcinwa kwamanzi i-HPMC ikwahambelana neqondo lobushushu elisetyenzisiweyo, kunye nokugcinwa kwamanzi kwe-methyl selethe i-ether ihle kakhulu kuncipha ngokunyuka kobushushu. Nangona kunjalo, kwizicelo zezinto ezibonakalayo, udaka lomgubo luhlala lusetyenziswa kumagumbi ashushu kubushushu obuphakamileyo (ngaphezulu kwe-40 degrees) kwiindawo ezininzi ehlotyeni, ezihlala zikhawulezisa ukuphiliswa kwesamente kunye nokukhuseleka kodaka olo kwaye lukhumbula udaka ololumileyo. Ithontsi lokugcinwa kwamanzi likhokelele kwimbono ecacileyo yokuba zombini ukuSebenza nokunyangwa kuyachaphazeleka, kwaye kubaluleke kakhulu ukunciphisa isiphumo semiba yobushushu engezantsi kwemeko. Nangona i-methyl i-methroxyEtheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheetheethl ngoku ithathwa njengeyona nto iphambili kuphuhliso lwetekhnoloji, ukuxhomekeka kwalo kubushushu kusenokukhokelela ekusebenzeni komsebenzi owomileyo. Nangona isixa se-methyl hydroxyEtheethyl seluplose (ihlobo lasehlotyeni) liyanda, ukusebenza kunye nokunganyangeki kweqhinga akunakufikelelwa iimfuno zokusetyenziswa. Ngonyango olukhethekileyo olukhethekileyo, njengokunyusa inqanaba lokuthengiswa kwamanzi, i-MC linokugcina iziphumo zokugcina amanzi ngcono kubushushu obuphezulu, ukuze ikwazi ukusebenzela ngcono iimeko eziphantsi kwemeko ezinzima.
Ixesha leposi: NgoFebwe-20 ukuya ku-525