1.HPMCyahlulwe ngohlobo 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.
2. Ngaphandle okanye ngaphandle kwe-S, iimpawu zihlukile
Ukusasaza ngokukhawuleza i-HPMC isasazeka ngokukhawuleza xa idibana namanzi abandayo kwaye inyamalale 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.Ngaphandle 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.
Isasazwe ngokukhawulezaHPMCinoluhlu olubanzi lwezicelo kwaye inokusetyenziswa kwiputty powder, udaka, iglue elulwelo, ipeyinti, kunye neemveliso zokuhlamba ngaphandle kokuchasana.
4.Indlela yokuchithwa
4-1. Thatha umlinganiselo ofunekayo wamanzi ashushu, uyibeke kwisitya kwaye uyifudumeze ukuya kuma-80 ° C, kwaye ngokuthe ngcembe wongeze le mveliso phantsi kokuvuselela kancinane. I-cellulose idada phezu kwamanzi ekuqaleni, kodwa ngokuthe ngcembe isasazwa ukwenza udaka olufanayo. Isisombululo sapholiswa ngelixa sishukumisa.
4-2. Ngaphandle koko, fudumeza i-1/3 okanye i-2/3 yamanzi ashushu ukuya ngaphezu kwe-85 ° C, yongeza i-cellulose ukuze ufumane i-slurry yamanzi ashushu, uze udibanise inani eliseleyo lamanzi abandayo, qhubeka uvuselela, kwaye upholise umxube obangelwayo.
4-3. Umnatha weselulosi ulungile ngokwentelekiso, kwaye ukho njengamasuntswana amancinci kumgubo oxutywe ngokulinganayo, kwaye unyibilika ngokukhawuleza xa udibana namanzi ukwenza i-viscosity efunekayo.
4-4. Kancinci kwaye ngokulinganayo yongeza i-cellulose kwiqondo lokushisa, kwaye qhubeka uvuselela de kube isisombululo esicacileyo senziwe.
5.Ziziphi izinto ezichaphazela ukugcinwa kwamanzi kwi-hydroxypropyl methyl cellulose?
5-1. Iselulosi ether HPMC homogeneity
I-HPMC esabela ngokulinganayo, i-methoxyl kunye ne-hydroxypropoxyl zisasazwa ngokulinganayo, kwaye izinga lokugcinwa kwamanzi liphezulu.
5-2. Iselulosi ether HPMC thermal gel lobushushu
Ukuphakama kobushushu bejeli ye-thermal, iphezulu izinga lokugcinwa kwamanzi; kungenjalo, isantya esezantsi yokugcina amanzi.
5-3. Iselulosi Etere HPMC Viscosity
Xa i-viscosity ye-HPMC inyuka, izinga lokugcinwa kwamanzi liyenyuka; xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwezinga lokugcinwa kwamanzi kuthanda ukuba mnene.
6.Imali eyongezelelweyo ye-cellulose ether HPMC
Ubuninzi be-ether ye-celluloseHPMCUkongeza, isantya sokugcinwa kwamanzi siphezulu kwaye ngcono isiphumo sogcino lwamanzi.
Kuluhlu lwe-0.25-0.6%, izinga lokugcinwa kwamanzi liye landa ngokukhawuleza ngokunyuka kwenani elongezelelweyo; xa isixa-mali esongeziweyo sithe sanyuka, ukunyuka kwezinga lokugcinwa kwamanzi kwehlile.
Ixesha lokuposa: Apr-26-2024