IHydroxypropylmethylcellulose (HPMC) yipolymer esetyenziswa ngokuqhelekileyo enoluhlu olubanzi lwezicelo kwiinkalo ezahlukeneyo.Isetyenziswa kakhulu kumayeza, ukutya, izimonyo, ukwakhiwa kunye namanye amashishini.Ukucoceka kwe-HPMC yinto ebalulekileyo echaphazela ukusebenza kwayo kunye nokusetyenziswa kwayo.Kweli nqaku, sixoxa ngezinto ezichaphazela ubunyulu HPMC.
1. Imathiriyeli ekrwada
Ukucoceka kwe-HPMC kuxhomekeke kakhulu ekucocekeni kwezinto ezisetyenziswayo kwimveliso yayo.Izinto ezisetyenziswayo kwimveliso ye-HPMC ziquka i-cellulose, i-methyl chloride, i-propylene oxide kunye namanzi.Ukuba kukho ukungcola kwezi zixhobo eziluhlaza, ziya kuqhutyelwa kwi-HPMC ngexesha lenkqubo yokuvelisa, okukhokelela ekulahlekeni kobunyulu.
2. Inkqubo yokuvelisa
Inkqubo yokuvelisa i-HPMC ibandakanya amanyathelo amaninzi, kubandakanywa ukuphendula kwe-cellulose nge-methyl chloride kunye ne-propylene oxide, ukuhlanjululwa kunye nokomisa.Nakuphi na ukuphambuka kwiimeko zenkqubo efanelekileyo kunokukhokelela ekungcoleni kwimveliso yokugqibela, ukunciphisa ubunyulu bayo.
3. Izinyibilikisi kunye ne-catalysts
Ngexesha lokuveliswa kwe-HPMC, i-solvents kunye ne-catalysts zisetyenziselwa ukuququzelela ukusabela phakathi kwe-cellulose, i-methyl chloride kunye ne-propylene oxide.Ukuba ezi zinyibilikisi kunye ne-catalysts azikho ukucoceka okuphezulu, zinokuthi zingcolise kwaye zinciphise ukucoceka kwemveliso yokugqibela.
4. Ukugcinwa kunye nokuthutha
Ukugcinwa kunye nothutho lukwamisela ubunyulu be-HPMC.I-HPMC kufuneka igcinwe kwindawo epholileyo neyomileyo ukuthintela ukufunxwa nokuthotywa kokufuma.Ukongeza i-stabilizers efanelekileyo kunye ne-antioxidants ngexesha lokugcinwa kunye nokuthutha kunokuthintela ukuthotywa kwe-HPMC kunye nokugcina ubunyulu bayo.
5. Ulawulo lomgangatho
Ekugqibeleni, ulawulo lomgangatho luyinto ebalulekileyo ekuqinisekiseni ukucoceka kwe-HPMC.Abavelisi be-HPMC kufuneka baphumeze imilinganiselo engqongqo yolawulo lomgangatho ukujonga ukucoceka kweemveliso zabo.Oku kubandakanya ukuvavanya ukucoceka kwezinto eziluhlaza, ukuhlolwa komgangatho rhoqo ngexesha lemveliso, kunye nokuvavanya ukucoceka kwemveliso yokugqibela.
Isishwankathelo, ukucoceka kwe-HPMC kuchaphazeleka kwizinto ezininzi, kubandakanywa ukucoceka kwezinto eziluhlaza, inkqubo yokuvelisa, i-solvents kunye ne-catalysts esetyenziswayo, ukugcinwa kunye nokuthutha, kunye nokulawula umgangatho.Ukuqinisekisa umgangatho ophezulu kunye nokucoceka kwe-HPMC, ukusetyenziswa kwezinto ezisemgangathweni ophezulu, ukuthotyelwa ngokungqongqo kwiimeko ezifanelekileyo zemveliso, ukusetyenziswa kwezinyibilikisi ezicocekileyo kunye ne-catalysts, ukugcinwa okuchanekileyo kunye nokuthuthwa kweemveliso, kunye namanyathelo okulawula umgangatho ongqongqo kufuneka aphunyezwe. .Ngokwenza njalo, abavelisi banokuvelisa ii-HPMC ezikumgangatho ophezulu ezihlangabezana neemfuno zabathengi kumashishini ahlukeneyo.
Ixesha lokuposa: Jul-18-2023