1. I-HPMC yahlulwe ngokohlobo olukhawulezileyo kunye nohlobo lokusasazwa ngokukhawuleza
Uhlobo lwe-HPMC lokusasazwa ngokukhawuleza lufakwe unobumba S, kwaye i-glyoxal kufuneka yongezwe ngexesha lenkqubo yemveliso.
Uhlobo olukhawulezileyo lwe-HPMC alongezi naziphi na iileta, ezinje ngo “100000″ uthetha “100000 viscosity fast dispersion type HPMC”.
2. Ngaphandle okanye ngaphandle kwe-S, iimpawu zihlukile
I-HPMC esasazeke ngokukhawuleza isasazeka ngokukhawuleza xa idibana namanzi abandayo kwaye ilahleka emanzini. Ngeli xesha, i-liquid ayinayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini ngaphandle kokuchithwa kwangempela. Emva kwemizuzu emibini, i-viscosity yolwelo ikhula ngokuthe ngcembe, isenza i-viscous ecacileyo ye-colloid.
I-HPMC ekhawulezileyo inokusasazwa ngokukhawuleza emanzini ashushu malunga nama-70°C. Xa ubushushu buhla kwiqondo elithile lobushushu, i-viscosity iya kubonakala ngokukhawuleza de i-viscous colloid ecacileyo yenziwe.
3. Nge okanye ngaphandle kwe-S, injongo yahlukile
I-HPMC ekhawulezileyo ingasetyenziswa kuphela kwi-putty powder kunye nodaka. Kwiglue yolwelo, ipeyinti kunye neemveliso zokuhlamba, kuya kubakho i-grouping phenomenon kwaye ayinakusetyenziswa.
I-HPMC esasazwe ngokukhawuleza inoluhlu olubanzi lwezicelo kwaye ingasetyenziswa kwi-putty powder, udaka, iglue engamanzi, ipeyinti, kunye nemveliso yokuhlamba ngaphandle kokuchasana.
Indlela yokunyibilika
1. Thatha umlinganiselo ofunekayo wamanzi atshisayo, uyifake kwisitya kwaye uyitshise ngaphezu kwe-80 ° C, kwaye ngokuthe ngcembe udibanise le mveliso phantsi kokuvuselela ngokukhawuleza. I-cellulose idada kumphezulu wamanzi ekuqaleni, kodwa ngokuthe ngcembe isasazwa ukwenza udaka olufanayo. Isisombululo sapholiswa ngelixa sishukumisa.
2. Ngaphandle koko, 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, qhubeka uvuselela, kwaye upholise umxube obangelwayo.
3. I-mesh ye-cellulose ilungile, kwaye ikhona njengamaqhekeza amancinci amancinci kwi-powder edibeneyo, kwaye iyancibilika ngokukhawuleza xa idibana namanzi ukwenza i-viscosity efunekayo.
4. Kancinci kwaye udibanise i-cellulose kwiqondo lokushisa, uqhube ngokuqhubekayo de 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. Ukufana kwe-cellulose ether HPMC
I-HPMC esabela ngokulinganayo, i-methoxyl kunye ne-hydroxypropoxyl zisasazwa ngokulinganayo, kwaye izinga lokugcinwa kwamanzi liphezulu.
2. Ubushushu be-Thermal gelation ye-cellulose ether HPMC
Ukuphakama kobushushu bejeli ye-thermal, kuphezulu 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 ukuba kube flat.
Isixa esongezelelweyo se-cellulose ether HPMC
Okukhona ubuninzi be-cellulose ether HPMC eyongeziweyo, iphezulu izinga lokugcinwa kwamanzi kwaye ngcono isiphumo sokugcina amanzi.
Kuluhlu lwe-0.25-0.6% yokongezwa, izinga lokugcinwa kwamanzi landa ngokukhawuleza kunye nokunyuka kwexabiso elongezelelweyo; xa isixa-mali esongeziweyo sinyuka ngakumbi, ukunyuka kwezinga lokugcinwa kwamanzi kuyehla.
Ixesha lokuposa: Nov-17-2022