1. I-HPMC yahlulwe ngohlobo olukhawulezileyo kunye nohlobo lokusasaza ngokukhawuleza.
Uhlobo losasazo olukhawulezileyo lwe-HPMC lunobumba S njengesimamva. I-Glyoxal kufuneka yongezwe ngexesha lenkqubo yokuvelisa.
Uhlobo lokusasaza olukhawulezayo lwe-HPMC alufaki naziphi na iileta, ezinje ngo “100000″ uthetha “i-100000 viscosity esasaza ngokukhawuleza i-HPMC”.
2. Ngaphandle okanye ngaphandle kwe-S, iimpawu zihlukile
Ukusasaza ngokukhawuleza i-HPMC isasazeka ngokukhawuleza emanzini abandayo kwaye inyamalale emanzini. Ulwelo akukho viscosity ngeli xesha kuba HPMC uchithachitheke kuphela emanzini kwaye hayi ngokwenene kunyibilike. Emva kwemizuzu emibini, i-viscosity ye-liquid iyanda ngokuthe ngcembe, isenza i-viscous liquid. I-colloid engqindilili.
I-HPMC ekhawulezileyo inokusasazwa ngokukhawuleza emanzini ashushu malunga nama-70°C. Xa amaqondo obushushu ehla ukuya kwiqondo elithile lobushushu, i-viscosity ibonakala kancinane 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 zolwelo, iipeyinti kunye nezixhobo zokucoca, i-clumps ingenzeka kwaye ingasetyenziswa.
Ukusasaza ngokukhawuleza i-HPMC inoluhlu olubanzi lwezicelo. Ingasetyenziselwa i-putty powder, udaka, iglue elulwelo, ipeyinti, kunye nokucoca izinto ngaphandle kokuchasana.
indlela yokuphelisa
1. Thatha ubungakanani obufunekayo bamanzi ashushu, uyibeke kwisitya kwaye uyifudumeze ukuya kuthi ga kwi-80℃, emva koko wongeze kancinci le mveliso ngokushukumisa kancinane. I-cellulose idada phezu kwamanzi ekuqaleni, kodwa ngokuthe ngcembe iyasasazeka ukuze yenze i-slurry efanayo. Pholisa isisombululo ngelixa uvuselela.
2. Okanye ukutshisa 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, uqhube ngokuqhubekayo, kwaye upholise umxube obangelwayo.
3. I-Cellulose inobukhulu obuncinci bemesh kwaye ikhona njengamasuntswana amancinci kumgubo oxutywe ngokufanayo. Ichithwa ngokukhawuleza xa ibonakaliswe emanzini ukwenza i-viscosity efunekayo.
4. Yongeza i-cellulose ngokukhawuleza kwaye ngokulinganayo kwiqondo lokushisa, uqhube ngokuqhubekayo de kube isisombululo esicacileyo sifom.
Ziziphi izinto ezichaphazela ukugcinwa kwamanzi kwi-hydroxypropyl methylcellulose?
Ukugcinwa kwamanzi kweemveliso ze-hydroxypropyl methylcellulose HPMC ngokwayo kuhlala kuchatshazelwa zezi zinto zilandelayo:
1. I-Homogeneity ye-cellulose ether HPMC
Amaqela asabela ngokufanayo e-HPMC methoxy kunye ne-hydroxypropoxy asasazwa ngokulinganayo kwaye anokugcinwa kwamanzi okuphezulu.
2. Cellulose ether HPMC thermal gel lobushushu
Ukuphakama kweqondo lokushisa kwejeli ye-thermal conductive, iphezulu izinga lokugcinwa kwamanzi; ngokuchaseneyo, isantya sokugcinwa kwamanzi sisezantsi.
3. I-Viscosity ye-cellulose ether HPMC
Xa i-viscosity ye-HPMC inyuka, izinga lokugcinwa kwamanzi liyenyuka; xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwezinga lokugcinwa kwamanzi kuthanda ukuba mnene.
Iselulosi ether HPMC imali yokongeza
Okukhona ubuninzi be-cellulose ether HPMC eyongeziweyo, iphezulu izinga lokugcinwa kwamanzi kwaye ngcono isiphumo sokugcina amanzi.
Kuluhlu lwe-0.25-0.6%, izinga lokugcinwa kwamanzi landa ngokukhawuleza njengoko isixa esongezelelweyo sinyuka; xa isixa-mali esongeziweyo sinyuka ngakumbi, ukunyuka kwezinga lokugcinwa kwamanzi kuyehla.
Ixesha lokuposa: Feb-06-2024