Yintoni umahluko phakathiihydroxypropyl methylcellulose(HPMC) kunye okanye ngaphandle kwe-S?
1. I-HPMC yahlulwe ngohlobo olukhawulezileyo kunye nohlobo lokusasazeka ngokukhawuleza
Uhlobo lwe-HPMC lokusasaza ngokukhawuleza lufakwe unobumba S. Ngexesha lenkqubo yokuvelisa, i-glyoxal kufuneka yongezwe.
Uhlobo olukhawulezileyo lwe-HPMC alongezi naziphi na iileta, ezinje nge “100000″ yi “100000 viscosity fast dispersion type HPMC”.
2. Ngaphandle okanye ngaphandle kwe-S, iimpawu zihlukile
Ukusasaza ngokukhawuleza i-HPMC isasazeka ngokukhawuleza emanzini abandayo kwaye inyamalale emanzini.Ngeli xesha, i-liquid ayinayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini, kwaye akukho ukuchithwa kwangempela.Emva kwemizuzu emibini, i-viscosity yolwelo ikhula ngokuthe ngcembe, isenza ulwelo oluncangathi olucacileyo.I-colloid engqindilili.
I-HPMC ekhawulezileyo inokusasazeka ngokukhawuleza emanzini ashushu malunga nama-70°C.Xa amaqondo obushushu ehla ukuya kwiqondo elithile lobushushu, i-viscosity ibonakala kancinci de i-viscous colloid ecacileyo yenziwe.
3. Nge okanye ngaphandle kwe-S, injongo yahlukile
I-HPMC ekhawulezileyo ingasetyenziswa kuphela kwi-putty powder kunye nodaka.Kwiiglues ze-liquid, iingubo kunye nezixhobo zokucoca, i-clumping iya kwenzeka kwaye ayinakusetyenziswa.
Ukusasaza ngokukhawuleza i-HPMC inoluhlu olubanzi lwezicelo.Ingasetyenziswa kwi-putty powder, udaka, iglue engamanzi, ipeyinti, kunye nemveliso yokuhlamba ngaphandle kokuchasana.
Indlela yokuphelisa
1. Thatha umlinganiselo ofunekayo wamanzi atshisayo, uwubeke kwisitya kwaye ushushu ube ngaphezu kwe-80 ° C, kwaye ngokuthe ngcembe udibanise le mveliso phantsi kokuvuselela ngokukhawuleza.I-cellulose idada emanzini ekuqaleni, kodwa ngokuthe ngcembe isasazeka ukuze yenze udaka olufanayo.Pholisa isisombululo ngokuvuselela.
2. Okanye ukufudumala i-1/3 okanye i-2/3 yamanzi ashushu ukuya ngaphezu kwe-85 ° C, yongeza i-cellulose ukuze ufumane i-slurry yamanzi ashushu, uze ungeze inani eliseleyo lamanzi abandayo, qhubeka uvuselela, kwaye upholise umxube obangelwayo.
3. I-Cellulose inenani le-mesh elincinci, kwaye likhona njenge-particle enye encinci kwi-uniformly stirred powder, kwaye iyancibilika ngokukhawuleza xa idibana namanzi ukwenza i-viscosity efunekayo.
4. Yongeza i-cellulose ngokukhawuleza kwaye ngokulinganayo kwiqondo lokushisa, kwaye qhubeka uvuselela ngexesha lokudibanisa kuze kube isisombululo esicacileyo senziwe.
Ziziphi izinto ezichaphazela ukugcinwa kwamanzi kwi-hydroxypropyl methylcellulose?
Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose HPMC imveliso ngokwayo ihlala ichatshazelwa zezi zinto zilandelayo:
1. Iselulosi ether HPMC homogeneity
I-HPMC ephendule ngokufanayo inokusasazwa okufanayo kwamaqela e-methoxy kunye ne-hydroxypropoxy kunye nokugcinwa kwamanzi aphezulu.
2. Cellulose ether HPMC thermal gel lobushushu
Ukuphakama kobushushu bejeli ye-thermal, iphezulu izinga lokugcinwa kwamanzi;kungenjalo, isantya esezantsi yokugcina amanzi.
3. Iselulosi ether HPMC viscosity
Xa i-viscosity ye-HPMC inyuka, izinga lokugcinwa kwamanzi liyenyuka;xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwezinga lokugcinwa kwamanzi kudla ngokuba mnene.
Iselulosi ether HPMC imali yokongeza
Ubukhulu bexabiso elongeziweyo le-cellulose ether HPMC, liphezulu izinga lokugcinwa kwamanzi kwaye ngcono isiphumo sogcino lwamanzi.
Kuluhlu lwe-0.25-0.6%, izinga lokugcinwa kwamanzi landa ngokukhawuleza ngokunyuka kwenani elongezelelweyo;xa isixa-mali esongeziweyo sinyuka ngakumbi, indlela eyandayo yokugcinwa kwamanzi iyacotha.
Ixesha lokuposa: Oct-17-2022