Ku-motar yokwakha okufakwayo kanye no-putty powder, usayizi we-hydroxyproppropylylllylyllylyllylylylylylylyllyllose ukuhlanzeka kuthinta ngqo ikhwalithi yokwakhiwa kobunjiniyela, ngakho-ke yiziphi izinto ezithinta ubumsulwa be-hydroxypropyllllyllose? Ukukusiza ekuphenduleni lo mbuzo namuhla.
Ehlelweni lokukhiqiza le-hydroxypropylllylylyl, umoya-mpilo osele ku-reaction kettle uzoholela ekunciphiseni kwe-hydroxypropylllylylylylylylylylylylylylylylyll methylcellulose futhi wehlise isisindo se-molecular. Kodwa-ke, umoya-mpilo osalayo ulinganiselwe, ngakho-ke akunzima ukwehlisa ama-molecule aphukile. Izinga lokugcwaliswa okukhulu okuyisisekelo nokuqukethwe kwe-hydroxypropyl kunobudlelwano obuhle, amafektri athile nje afuna ukunciphisa izindleko nentengo, awufuni ukwenza ngcono okuqukethwe yi-hydroxypropylylylylylylylylylylylylylyl, ngakho-ke ikhwalithi ayikwazi ukufinyelela ezingeni ngemikhiqizo efanayo yakwamanye amazwe.
Izinga lokugcina lamanzi le-hydroxypropyllllyllose kanye ne-hydroxypropyl futhi linobudlelwano obuhle, futhi nenqubo yonke yokusabela, i-hydroxypropyl methylcellulose futhi inquma inani lokugcinwa kwamanzi le-hydroxypropyllylylylylylylylylyl perm. Umphumela we-alkalization, isilinganiso se-chloromethane ukuze i-appelene oxide, ukugcwala kwe-alkali kanye nesilinganiso samanzi ukuze kunciphise ukotini konke kunquma ukusebenza komkhiqizo.
The quality of raw materials, alkalization effect, process ratio control, solvent ratio and neutralization effect, all determine the quality of hydroxypropyl methyl cellulose, some hydroxypropyl methyl cellulose made to dissolve after like milk is very cloudy, some milky white, some yellow, some kucace futhi kusobala. Uma ufuna ukuyixazulula, shintsha kusuka kumaphuzu angenhla. Kwesinye isikhathi i-acetic acid ingathinta kakhulu ukudluliselwa, i-acetic acid isetshenziswa kangcono ngemuva kwe-dilution, umthelela omkhulu noma ukusabela okuvusa umfaniswano, isilinganiso sohlelo sizinzile (umswakama wesistimu, okuqukethwe akusizi, njengokuvuselelwa kohlelo lokusebenza), Eqinisweni, izici eziningi ziyathinteka. Ngokuqina kwemishini kanye nokusebenza kwabasebenza abaqeqeshiwe, imikhiqizo ekhiqizwayo kufanele ibe izinzile kakhulu. Ukudluliselwa akufanele kudlule ± 2 2%, futhi ukufana kweqembu leqembu elibangelwe kufanele kulawulwe kahle. Ukufakwa esikhundleni okufanayo, ukudluliselwa kumele kube kuhle.
Ngakho-ke, ikhwalithi enhle yomkhiqizo inqunywa ngezinto eziluhlaza, ubuchwepheshe bokukhiqiza, nezinye izinto. Ukulawulwa okuqinile kuphela kusuka ekugcineni okukodwa kuze kube sekupheleni kungakhiqiza imikhiqizo ngekhwalithi ezinzile.
Isikhathi sePosi: Sep-14-2022