Igama lesiTshayina le-HPMC yiHydroxypropyl Methylcelcelcelcelceluplose. Ayisiyo i-ionic kwaye ihlala isetyenziswa njengearhente yokugcina amanzi kubukhoboka obuxubeneyo. Yeyona nto ixhaphakileyo esetyenziswayo kwindawo yokugcina amanzi. Imveliso ye-polysaccharide esekwe yi-alkalization kunye ne-etheriya. Ayinamali, ayiphenduli ngee-ions ezihlawuliswayo kwizinto zentsholongwane, kwaye isebenza ngokuzinzileyo. Ixabiso likwaphantsi kunezinye iintlobo zeSeluplose Talupe, ngoko ke isetyenziswa ngokubanzi kubukhoboka oxubeneyo.
Umsebenzi we-hydroxypropyl methylcelcelcelse: Ingakwazi ukulinganisa udaka olusandul 'ukuxhumanisa ukuba nohlobo oluthile olumanzi kunye nokuthintela ukwahlulahlula. . .
Ukuphelisa i-viscofity ye-hydroxypropyl methylcelgalose ithe ther, ngcono ukusebenza kwendlela yokugcina amanzi. Kwimveliso efanayo, iziphumo ze-viscofity zilinganiswe ngeendlela ezahlukeneyo zahluke kakhulu, kwaye ezinye zinokuphinda-phinda umohluko. Ke ngoko, xa kuthelekiswa nokundwendwela, kufuneka kwenziwe phakathi kweendlela zovavanyo ezifanayo, kubandakanya neqondo lokushisa, i-rotor, njl.
Ngokuphathelele ubungakanani, ukugqiba isuntswana, kungcono ukugcinwa kwamanzi. Emva kwamasuntswana amakhulu e-Selersese Ether ingena ekuhlanganeni namanzi, umphezulu uyayinyibilika ngokukhawuleza kwaye uyisonge ijeli ukuba isonge imibandela yokuthintela iimolekyuli zamanzi eziqhubeka noko. Ngamanye amaxesha ayinakusasazeka ngendlela efanayo kwaye inyibilikisiwe nasemva kwexesha elide, ukwenza isisombululo se-scan esinamafu okanye i-agemmeration. Ichaphazela kakhulu ukugcinwa kwamanzi kwe-seluplose i-ether, kwaye ukuluka kwenye yezinto zokukhetha i-gather ekrway. Ubuhle buyinto ebalulekileyo yentsebenzo ye-methyl selete. I-MC isetyenziselwa umgubo owomileyo kufuneka ube ngumgubo, onomxholo wamanzi ophantsi, kwaye ukulunga kwakufuneka kufuna i-20% -60% ye-paricle ukuba ingaphantsi kwe-63um. Ukucombulula kuchaphazela ukunyibilisela kwe-hydroxypropyl methylcelcelgalose ether. I-MCE MC idla ngokuba ngumphathi, kwaye kulula ukunyibilika emanzini ngaphandle kokuncitshiswa, kodwa ireyithisi yokuchitheka icotha kakhulu, ngoko ayifanelekanga ukuba isetyenziswe ngodaka olwahlukileyo. Ngomgubo owomileyo, i-MC ichithwayo kwizinto ezifana nesamente ezinje nge-agggate, i-fililler kunye nesamente, kunye nomgubo owoneleyo onokuphepha i-methyl ye-methyl ye-iteglose xa udibanisa namanzi.
Ngokubanzi, ukuphakama kwe-viscosity, eyona nto ilunge ngakumbi. Nangona kunjalo, ukuphakama kwe-viscofity kunye nokuphakathi kobunzima be-MC, ukwehla okufanayo ekuzenisweni kwalo kuya kuba nefuthe elibi kumandla kunye nokusebenza komsebenzi wokwakha. Ukuphakama kwe-viscofity, eyona nto icacileyo yokuthambisa kodaka, kodwa ayifani ngokuthe ngqo. Ukuphakama okuphezulu, kokukhona udaka olunamanzi luya kuba, oko kukuthi, ngexesha lolwakhiwo, lubonakaliswa njengokunamathela kwi-scraper kunye nokunamathela okuphezulu. Kodwa akuncedi ukonyusa amandla olwakhiwo lofudu lwamanzi. Oko kukuthi, ngexesha lolwakhiwo, ukusebenza kwe-SAG-SAG akucacanga. Ngokuchasene noko, i-vissium ephakathi nephantsi kodwa iguqulwe i-methyl ye-melsulose entsebenzo ebalaseleyo ekuphuculeni amandla olwakhiwo lodaka lwamanzi.
Ukugcinwa kwamanzi i-HPMC ikwahambelana neqondo lobushushu elisetyenzisiweyo, kunye nokugcinwa kwamanzi kwe-methyl selethe i-ether ihle kakhulu kuncipha ngokunyuka kobushushu. Nangona kunjalo, kwisicelo sezinto ezibonakalayo, udaka lomgubo luhlala lusetyenziswa kumaxabiso ashushu kwiqondo lokuhlala elingaphandle, elihlala likhawulezisa unyango lwe-powder. Ukwehla kwenqanaba lokugcina amanzi kukhokelela kwimvakalelo ecacileyo yokuba zombini iindlela zokusebenza kunye nokuchasana kuyachaphazeleka, kwaye kubaluleke kakhulu ukunciphisa ifuthe lezinto zobushushu phantsi kwale meko. Ngokuphathelene noku, i-Methyl HydroxyEtheetheetheetheetheetheetheetheeteethl ye-Ether Orupitives ngoku ithathelwa ingqalelo ukuba iphambili kuphuhliso lwetekhnoloji. Nangona inani le-methyl hydroxythyl seluplose inyuswe (ifomula yehlobo), ukusebenza kunye nokunganyangeki kwe-rack akunakufikeleleka kwiimfuno zokusetyenziswa. Ngolunye unyango olukhethekileyo kwi-MC, njengokukhulisa inqanaba lokuthengisa, njl njl.
Ngokubanzi, i-HPMC ineqondo lokushisa lejeli, elinokwahlulwa kwindidi ezingama-60, iindidi ezingama-65, kunye neendidi ezingama-75. Ngamashishini asebenzisa intlabathi yomlambo yodaka oluqhelekileyo oluxubeneyo, kungcono ukuba usebenzise i-HPMC ye-75-kunye neqondo lokushisa eliphezulu. Umthamo we-HPMC akufuneki ukuba uphakame kakhulu, kungenjalo uya kwandisa imfuno yamanzi odaka, iya kunamathela kwi-troul, kwaye ixesha eliya kuba lide kakhulu, eliya kuchaphazela ukwakha. Iimveliso ezahlukeneyo zokungcola zisebenzisa i-HPMC ngokundwendwela ezahlukeneyo, kwaye azisebenzisi i-viscofity ephezulu ye-HPMC. Ke ngoko, nangona i-hydroxypropyl methylcelcelcelsed ihle, ziqhwaba izandla xa zisetyenziswa kakuhle. Ukukhetha i-HPMC yasekunene ngoxanduva oluphambili lwamashishini abasebenzi be-shishini.
IXESHA LOKUQALA: APR-12 ukuya kwi-1223