Owona mkhulu we-viscosity ye-hydroxypropyl methyl seluplose, kungcono ukugcinwa kwamanzi. I-Viscosity yiparamitha ebalulekileyo ye-HPMC. Okwangoku, abavelisi be-HPMC eyahlukeneyo basebenzisa iindlela ezahlukeneyo kunye nezixhobo zokulinganisa i-HPMC. Iindlela eziphambili zibandakanya i-haikravisko, hoppler, ibbelohde kunye ne-brookfield.
Kwimveliso efanayo, iziphumo zokuvalelwa ezilinganiswe ngeendlela ezahlukeneyo ziyahluka kakhulu, kwaye ezinye ziphindaphinda. Ke ngoko, xa uthelekisa uVeksisity, kufuneka kwenziwe phakathi kwendlela efanayo yovavanyo, kubandakanya ubushushu, imboniselo, njl.
Ubungakanani bentsumpa, imbumbulula isuntswana, kungcono ukugcinwa kwamanzi. Emva kwamasuntswana amakhulu e-Selelose Telupelose Other namanzi, umphezulu uyayinyibilika ngokukhawuleza ijeli ukuba isonge imibandela yokuthintela iimolekyuli zamanzi eziqhubeka noko. Ngamanye amaxesha, kwanexesha elide elishukumisayo alinakusasazeka kwaye lichithwe, lenza isisombululo se-scan esinamafu okanye siqulunqwe. Ukugcinwa kwamanzi kwe-ether eselfowuni kuchaphazeleka kakhulu, kwaye ukuluka kwenye yezinto zokukhetha i-gather ether.
Ubuhle buyinto ebalulekileyo yentsebenzo ye-methyl selete. I-MC yodaka olomileyo lifuna umgubo, umxholo wamanzi ophantsi, kwaye nokulunga kufuna i-20% -60% yobungakanani obungaphantsi kwe-63um. Ukulunga kuchaphazela ukonakala kwe-hydroxyl methyl sete cury. I-Coorser MC ihlala i-Granular kwaye inyibilikiswe ngokulula emanzini ngaphandle kokutsiba, kodwa ireyithi yokuchithwa icotha kakhulu kwaye ayilunganga ukusetyenziswa komgubo owomileyo.
Ebudeni owomileyo, i-MC ichithwayo phakathi kwe-Agggate, i-Filler entle, isamente kunye nezinye izinto zokwenza izinto, kunye nomgubo owoneleyo wokuphepha imbonakalo ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl ye-methyl. Xa i-MC ichithwe emanzini, kunzima ukunyibilikisa ekusasazeni. I-MC inomthi womdangazethi awuzange 'yinkcitho kuphela, kodwa ikwanciphisa amandla endawo yodaka. Xa udaka lowomileyo lwakhiwe kwindawo enkulu, lubonisiwe ukuba isantya sokunyangwa esinodaka sendawo sincitshisiwe kakhulu, kwaye ukuqhekeka kubangelwa lixesha lokunyanga okwahlukileyo. Ngomthongo wokwakha ngolwakhiwo lomatshini, kuba ixesha lokuxuba lifutshane, iimfuno zokulungisa ziphezulu.
Ngokubanzi, ukuphakama kwe-viscosity, eyona nto ilunge ngakumbi. Nangona kunjalo, ukuphakama okuphezulu kukuba, ukuphakama kwesisindo se-MC, kwaye ukulungisa kwe-MC kuya kuncipha ngokufanelekileyo, okunefuthe elibi kumandla kunye nokusebenza komsebenzi wodaka. Ukuphakama kwe-viscofity, eyona nto icacileyo yokuthambisa kodaka, kodwa ayingqinelani nobudlelwane. Ukuphakama kwe-viscosity, obambeleyo obambelele kodaka olumanzi, omalunga nolwakhiwo, ukusebenza kwe-scraped enamathelayo kunye nokunamathela okuphezulu kweyona ndawo. Kodwa akuncedi ukonyusa amandla olwakhiwo lofunga lwamanzi ngokwalo. Xa ulwakhiwo, ukusebenza kwe-anti-droop ayicacanga. Ngokuchasene noko, abanye baguqula i-metsulose eguqukayo enomoya ophakathi kunye no-Viscofity ophantsi basebenza kakuhle ekuphuculeni amandla olwakhiwo lodaka lwamanzi.
Ngaphezulu inani elikhulu lesether ye-selsulose yongezwa kudaka, kungcono umsebenzi wokugcina amanzi, okuphezulu kwi-viscofity, engcono ukusebenza kwendlela yokugcina amanzi.
Ukulunga kwe-HPMC kukwanefuthe elithile ekugcinweni kwamanzi, ethetha ngokubanzi, kulungelelwaniso olufanayo lwe-methyl ye-methyl ye-methyl ye-metelose, kwinani elifanayo, ukulunga kwendlela yokugcina amanzi kungcono.
Ukugcinwa kwamanzi i-HPMC ikwanxulumene neqondo lokushisa elisetyenzisiweyo, kunye nokugcinwa kwamanzi kwe-methyl selethe ye-ether ihla ngokunyuka kobushushu. Kodwa kwisicelo sezinto ezibonakalayo, imimandla emininzi yodaka iya kuhlala ikwiqondo eliphezulu (elingaphezulu kwe-40 degrees) phantsi kwendawo yokwakhiwa kwelanga, efana nokukhawulezisa ukuphiliswa kwesamente kunye nokukhanya kodaka olwamileyo.
Ukwehla kwenqanaba lokugcina amanzi kukhokelela kwimvakalelo ecacileyo yokuba zombini ukwakha kunye nokunganyangeki kuyachaphazeleka. Phantsi kweemeko ezinjalo, kuya kubaluleke kakhulu ukunciphisa impembelelo yezinto zobushushu. Nangona i-methylhyddroxythyl sete i-Iterication ithathwa njengephambili kuphuhliso lwetekhnoloji, ukuxhomekeka kwalo kubushushu kuya kukhokelela ekusebenzeni kodaka olwalukileyo.
Ukonyusa umthamo we-methyl hydroxyyl sellyulose, ukwakhiwa nokungavisisiyo nokunganyangeki kungakwazi ukufikelela kwiimfuno zokusetyenziswa. I-MC ngonyango olukhethekileyo, njengokuphucula inqanaba lokuthengiswa kwe-ether, kunokwenza umthombo wokugcina amanzi kwimeko yeqondo lobushushu eliphezulu ukugcina isiphumo esingcono, ukuze sikwazi ukusebenzela ngcono iimeko ezinobunzima.
Ixesha leposi: NgoFebwe-20 ukuya ku-525