Tusaha viscosity ee hydroxypropyl methylcellulose waa tusaha aad muhiim u ah. Viscosity ma matalo daahirnimada. Viscosity ee cellulose HPMC waxay ku xiran tahay habka wax soo saarka. Deegaannada kala duwan ee isticmaalka waa in ay doortaan HPMC cellulose leh muuqaalo kala duwan, ma aha heerka sare ee viscosity ee cellulose HPMC, ka wanaagsan! Waxa ku habboon waa sax.
Xakamaynta viscosity
1. Soo saarista viscosity sare ee hydroxypropyl methylcellulose, kaliya vacuuming iyo beddelka nitrogen ma soo saari karaan cellulose aad u sarreeya. Guud ahaan, wax-soo-saarka cellulose-ka-jilicsan ee Shiinaha lama xakamayn karo. Si kastaba ha ahaatee, haddii mitirka ogsijiinta lagu rakibo kiliyaha, wax soo saarka viscosity-keeda ayaa si macmal ah loo xakameyn karaa.
Adeegsiga wakiilka ururka
2. Intaa waxaa dheer, iyada oo la tixgelinayo xawaaraha beddelka ee nitrogen, way sahlan tahay in la soo saaro alaabooyin badan oo viscosity ah iyada oo aan loo eegin habka hawo-mareenka. Dabcan, heerka polymerization ee suufka la safeeyey ayaa sidoo kale muhiim ah. Haddii taasi shaqayn waydo, ka dibna ku samee ururka hydrophobic. Dalka Shiinaha waxaa ka jira wakiilo ururo. Nooca wakiilka ururka ee la dooranayo ayaa saameyn weyn ku leh waxqabadka badeecada ugu dambeysa.
Waxyaabaha ay ka kooban tahay Hydroxypropyl
3. Ogsajiinta hadhaaga ah ee ku jirta reactor waxay keentaa nabaad-guurka cellulose iyo miisaanka kelliga hoose. Si kastaba ha ahaatee, haddii ogsijiinta hadha ay xaddidan tahay, ilaa iyo inta unugyadii jabay ay dib isugu xiran yihiin, ma adka in la sameeyo viscosity sare. Si kastaba ha ahaatee, heerka qoyaanku wuxuu leeyahay wax badan oo ku saabsan waxa ku jira hydroxypropyl. Warshadaha qaarkood waxay rabaan oo kaliya inay yareeyaan qiimaha iyo qiimaha, laakiin ma rabaan inay kordhiyaan nuxurka hydroxypropyl, markaa tayada ma gaari karto heerka badeecadaha shisheeye ee la midka ah.
arrimo kale
4. Heerka haynta biyaha ee badeecadu waxay leedahay xidhiidh weyn oo la leh hydroxypropyl, laakiin sidoo kale waxay go'aamisaa heerka haynta biyaha, saamaynta alkalization, saamiga methyl chloride iyo propylene oxide, iyo xoojinta alkali ee habka falcelinta oo dhan. Saamiga biyaha iyo suufka la safeeyey labaduba waxay go'aamiyaan waxqabadka alaabta.
Waqtiga boostada: Abriil-03-2023