Hydroxypropyl methylcellulose inenge isinganyunguke mune absolute ethanol uye acetone. Iyo aqueous solution yakagadzikana zvakanyanya pakamuri tembiricha uye inogona gel pakupisa kwakanyanya. Mazhinji eiyo hydroxypropyl methylcellulose pamusika ikozvino ndeyemvura inotonhora (yekamuri tembiricha mvura, yepombi mvura) mhando yekukurumidza. Mvura inotonhora ipapo HPMC ichave iri nyore uye yakachengeteka kushandisa. HPMC inoda kuwedzerwa zvakananga kumvura inotonhora mhinduro mushure memaminitsi gumi kusvika makumi mapfumbamwe kuti iwedzere zvishoma nezvishoma. Kana iri muenzaniso wakakosha, inoda kubvongodzwa nemvura inopisa kuti ipararire, uye yozodururwa mumvura inotonhora kuti iparadze mushure mekutonhora.
Kana HPMC zvigadzirwa zvakananga akawedzera kumvura, ivo vachaita coagulate uye ipapo kunyunguduka, asi kupera uku kunononoka uye kwakaoma. Idzi nzira nhatu dzinotevera dzekumisa dzinokurudzirwa, uye vashandisi vanogona kusarudza nzira iri nyore zvinoenderana nemamiriro ekushandisa (kunyanya yemvura inotonhora yekukurumidza HPMC).
Dissolving nzira uye kudzivirira kweHPMC
1. Nzira yemvura inotonhora: Kana ichida kuwedzerwa zvakananga kune yakajairika tembiricha aqueous solution, zviri nani kushandisa mvura inotonhora yekuparadzira mhando. Mushure mekuwedzera viscosity, kuwirirana kunowedzera zvishoma nezvishoma kune index inoda.
2. Powder kusanganisa nzira: HPMC poda uye chiyero chakafanana kana zvimwe zvezvimwe zvikamu zvehupfu zvakapararira zvakakwana nekusanganiswa kwakaoma, uye mushure mekuwedzera mvura kuti iparadze, HPMC inogona kupedzwa panguva ino uye haichazove agglomerate. Muchokwadi, zvisinei kuti imhando ipi yehydroxypropyl methylcellulose. Inogona kuoma yakasanganiswa zvakananga mune zvimwe zvinhu.
3. Organic solvent wetting method: HPMC inotanga kuparadzirwa kana kunyoroveswa nemafuta emagetsi, akadai se ethanol, ethylene glycol kana mafuta, uye zvino yakanyungudutswa mumvura, uye HPMC inogonawo kunyungudutswa zvakanaka.
Munguva yekuparara, kana paine agglomeration, ichaputirwa. Uyu ndiwo mugumisiro wekusaenzana kubvongodza, saka zvakakosha kukurumidza kukurumidza kukurumidza. Kana paine mabhubhu mukuparara, imhaka yemhepo inokonzerwa nekusaenzana kubvongodza, uye mhinduro inobvumirwa kumira kwemaawa 2- 12 (nguva chaiyo inoenderana nekuenderana kwemhinduro) kana vacuuming, kudzvanya uye dzimwe nzira. kubvisa, kuwedzera huwandu hwakakodzera hwe defoamer hunogonawo kubvisa mamiriro aya. Kuwedzera huwandu hwakakodzera hwe defoamer kunogonawo kubvisa mamiriro aya.
Sezvo hydroxypropyl methylcellulose ichishandiswa mumaindasitiri akasiyana-siyana, zvakakosha zvikuru kugona nzira yekunyungudutsa yehydroxypropyl methylcellulose yekushandisa kwayo. Mukuwedzera, vashandisi vanoyeuchidzwa kuti vateerere kudzivirira kwezuva, kudzivirira kwemvura uye kuchengetedzwa kwemvura panguva yekushandiswa, kudzivisa chiedza chakananga, uye kuchengeta munzvimbo yakavharwa uye yakaoma. Dzivisa kusangana nezvinobatidza moto uye dzivirira kuumbwa kwehuruva yakawanda munzvimbo dzakavharwa kudzivirira njodzi dzinoputika.
Nguva yekutumira: Jun-20-2023