Nzira dzekunyungudutsa HPMC dzinosanganisira: nzira yemvura inotonhora nekukurumidza uye nzira yemvura inopisa, nzira yekusanganisa hupfu uye nzira yekuchenesa organic solvent
Mushonga wemvura inotonhora weHPMC unorapwa neglyoxal, iyo inopararira nekukurumidza mumvura inotonhora. Panguva ino, haisi mhinduro chaiyo. Imhinduro kana viscosity yawedzera. Mushonga unopisa haurapwe neglyoxal. Kana huwandu hweglyoxal hwakura, hunopararira nekukurumidza, asi viscosity inokwira zvishoma nezvishoma.
Sezvo HPMC isinganyungudike mumvura inopisa, HPMC inogona kupararira zvakaenzana mumvura inopisa pakutanga, yobva yanyungudika nekukurumidza kana yatonhodzwa.
Nzira mbiri dzakajairika dzinotsanangurwa pazasi:
1) Isa huwandu hunodiwa hwemvura inopisa mumudziyo woipisa kusvika pa70 ℃. Hydroxypropyl methylcellulose yakawedzerwa zvishoma nezvishoma nekukurunga zvishoma nezvishoma, HPMC yakatanga kuyangarara pamusoro pemvura, uye zvishoma nezvishoma yakagadzira slurry, iyo yakatonhodzwa nekukurunga.
2) Wedzera 1/3 kana 2/3 yemvura inodiwa mumudziyo, pisa kusvika 70 ℃, paradzira HPMC zvichienderana nenzira ye1) kugadzirira slurry yemvura inopisa; Wobva wawedzera mvura inotonhora yasara muslurry yemvura inopisa, kurunga wotonhodza musanganiswa.
HPMC inotonhorera inogona kunyungudutswa nekuwedzera mvura zvakananga, asi nguva yekutanga yekunyunguduka imaminitsi 1 kusvika ku15. Nguva yekushanda haifanirwe kudarika nguva yekutanga.
Nzira yekusanganisa upfu: Upfu hweHPMC hunonyungudutswa zvachose nekusanganisa kwakaoma nezvikamu zvakafanana kana zvakawanda zveupfu, uye hwobva hwanyungudutswa nemvura. Muchiitiko ichi, HPMC inogona kunyungudutswa isina kuchekwa.
Nzira yekunyorovesa organic solvent:
Hydroxypropyl methylcellulose inogona kunyungudutswa nekuiparadzira mu organic solvent kana kunyorovesa ne organic solvent, wozoiisa mumvura inotonhora kana mvura inotonhora. Ethanol, ethylene glycol, nezvimwewo zvinogona kushandiswa se organic solvent.
Nguva yekutumira: Ndira-20-2022