Iindlela zokuchithwa kwe-HPMC zibandakanya: indlela yesisombululo samanzi abandayo kunye nesisombululo esishushu, indlela yokuxuba umgubo kunye nendlela yokumanzisa i-solvent.
Isisombululo samanzi abandayo se-HPMC siphathwa nge-glyoxal, echithwa ngokukhawuleza emanzini abandayo. Ngeli xesha, ayisosisombululo sokwenene. Sisisombululo xa i-viscosity inyuka. Isisombululo esishushu asiphathwa nge-glyoxal. Xa umthamo we-glyoxal ukhulu, uya kusasazeka ngokukhawuleza, kodwa i-viscosity iya kunyuka ngokukhawuleza.
Ekubeni i-HPMC ayinyibiliki emanzini ashushu, i-HPMC inokusasazwa ngokulinganayo emanzini ashushu kwinqanaba lokuqala, kwaye ngokukhawuleza ichithwe xa ipholile.
Iindlela ezimbini eziqhelekileyo zichazwe ngezantsi:
1) Beka umlinganiselo ofunekayo wamanzi ashushu kwisikhongozeli kwaye ufudumale ukuya kuma 70 ℃. IHydroxypropyl methylcellulose yongezwa ngokuthe ngcembe phantsi kokuvuselela kancinane, i-HPMC yaqala ukudada emanzini, yaza ke ngokuthe ngcembe yenze udaka, olwathi lwapholiswa phantsi kokushukunyiswa.
2) Yongeza i-1 / 3 okanye i-2 / 3 yamanzi afunekayo kwisitya, ubushushu kwi-70 ℃, ukusabalalisa i-HPMC ngokwendlela ye-1) ukulungiselela udaka lwamanzi ashushu; Emva koko faka amanzi abandayo asele kwi-slurry yamanzi ashushu, ugxobhoze kwaye upholise umxube.
Amanzi abandayo ngokukhawuleza i-HPMC inokuchithwa ngokudibanisa amanzi ngokuthe ngqo, kodwa ixesha lokuqala le-viscosity yimizuzu eyi-1 ukuya kwe-15. Ixesha lokusebenza aliyi kudlula ixesha lokuqala.
Indlela yokuxuba umgubo: I-HPMC yomgubo ihlakazwe ngokupheleleyo ngokuxuba okomileyo kunye namacandelo afanayo okanye ngaphezulu, kwaye inyibilikiswe ngamanzi. Kule meko, HPMC inokunyibilika ngaphandle caking.
Indlela yokumanzisa isinyibilikisi se-organic:
IHydroxypropyl methylcellulose inokunyibilika ngokuyichitha kwi-organic solvent okanye ukuyimanzisa nge-organic solvent, ize yongeze kumanzi abandayo okanye kumanzi abandayo. I-Ethanol, i-ethylene glycol, njl.
Ixesha lokuposa: Jan-20-2022