vHydroxypropyl methyl cellulose (HPMC)waa budo cad oo aan ur lahayn, dhadhamin, aan sun ahayn. Ka dib marka si buuxda ugu milmaan biyaha, hydroxypropyl methyl cellulose waxay sameyn doontaa kolloid viscous ah oo hufan.
v Qalabka ceeriin ee ugu muhiimsan ee hydroxypropyl methyl cellulose (HPMC): suuf la safeeyey, methyl chloride, propylene oxide, iyo alaabta kale ee cayriin, soodhaha caustic, acid, toluene, isopropanol, iwm.
Isbarbardhigga faa'iidooyinka iyo khasaarooyinka hydroxypropyl methyl cellulose:
1.Pure hydroxypropyl methyl cellulose HPMC waa dabacsanaan muuqaal ah oo leh cufnaanta bulk yar, oo leh miisaan 0.3-0.4/ml.
HPMC-da la sinaystay ayaa leh dareere aad u wanaagsan oo dareemaya culeys, taas oo si weyn uga duwan alaabta dhabta ah muuqaal ahaan.
2.Pure hydroxypropyl methyl cellulose HPMC xal aqueous waa cad, gudbin iftiin sare, heerka haynta biyaha> 97%.
Xalka biyo-xidheenka ee HPMC waa mid wasakh ah, heerka haynta biyahana way adagtahay in la gaadho 80%.
3.HPMC saafi ah waa in aanay urin ammonia, istaarij iyo aalkolo.
HPMC-da la sinaysto waxay caadi ahaan uraysaa dhammaan noocyada dhadhanka, xataa haddii aanay dhadhan lahayn, waxay dareemi doontaa culays.
4.Pure hydroxypropyl methyl cellulose budada HPMC waa faybar hoostiisa mikroskoob ama muraayad weyn.
HPMC la sinaystay waxa loo arki karaa sida adkaha granular ama crystals hoos mikroskoob ama muraayad weynaynta.
Xaggee ka imanayaa si loo garto faa'iidooyinka iyo faa'iido darrada hydroxypropyl methyl cellulose?
1.shahaado cad
In kasta oo caddaanku aanu go'aamin karin in HPMC ay fududahay in la isticmaalo, iyo haddii walxaha caddaynta lagu daro inta lagu jiro habka wax-soo-saarka, waxay saameyn doontaa tayada. Si kastaba ha noqotee, badi alaabooyinka wanaagsan waxay leeyihiin caddaan wanaagsan.
2.Fineness
Wanaagsanaanta HPMC guud ahaan waxay leedahay 80 mesh iyo 100 mesh, iyo sida ay u fiican tahay, guud ahaan marka loo hadlo, ayaa ka sii wanaagsan.
3. Gudbinta
Dhighydroxypropyl methyl cellulose (HPMC)galay biyaha si ay u sameeyaan kolloid hufan, oo hubi gudbintiisa iftiinka. Kor u kaca gudbinta iftiinka, ayaa ka sii wanaagsan, taas oo muujinaysa in ay jiraan walxo aan milmi karin oo ku jira. Dareen-celinta reactors toosan guud ahaan waa wanaagsan tahay, halka tan reactors-ka toosan ay ka sii daran tahay.
4.Qaybta
Inta uu sii weynaado cuf-jiidadka gaarka ah, waa ka sii cuslaaday. Gaar ahaan waa weyn yahay, guud ahaan sababtoo ah waxa ku jira kooxda hydroxypropyl ee ku jira waa sarreeyaa, iyo waxa ku jira kooxda hydroxypropyl waa sarreeyaa, haynta biyaha ayaa ka fiican.
Waqtiga boostada: Abriil-25-2024