Ubumsulwa be-hydroxypropyll methylcellulose ekwakheni uMotartation Insuration Datilation kanye ne-putty powder kuthinta ngqo ikhwalithi yokwakhiwa kobunjiniyela, ngakho-ke yiziphi izinto ezithinta ubumsulwa be-hydroxypropyllllyllose? Ake ngiphendule lo mbuzo kuwe.
Enqubweni yokukhiqiza ye-hydroxypropyll methylcellulose, i-oksidi yesikhashana e-reactoror izodala ukonakala kwe-hydroxypropyll methylcellulose futhi inciphise isisindo se-molecular, kepha i-oxygen eyinsalela ilinganiselwe ukuxhuma inhlekelele ye-molecule ephukile. Izinga lokugcwaliswa kwamanzi elibaluleke kakhulu linokunye okuqukethwe ngokuqukethwe kwe-hydroxypropyl. Amanye amafektri afuna kuphela ukunciphisa izindleko kanye nentengo, kepha angafuni ukwandisa okuqukethwe kwe-hydroxypropyl, ngakho-ke ikhwalithi ayikwazi ukufinyelela ezingeni ngemikhiqizo efanayo yakwamanye amazwe.
Izinga lokugcina lamanzi le-hydroxypropylllylyly futhi linobudlelwano obuhle ne-hydroxypropyl, nakwinqubo yonke yokusabela, i-hydroxypropyl futhi inquma inani lokugcinwa kwamanzi le-hydroxypropylylylylylylylylylylylyl. Umphumela we-alkalization, isilinganiso se-methyl chloride ne-propenene oxide, ukugcwala kwe-alkali kanye nesilinganiso samanzi ukuze kunciphise ukotini konke kunquma ukusebenza komkhiqizo.
Ikhwalithi yezinto zokusetshenziswa ezivuthiwe, umphumela we-alkalization, isilinganiso sezilinganiso zenqubo, isilinganiso se-solvents kanye nomphumela wokungathathi hlangothi konke, ezinye zazimhlophe, kanti ezinye zazimhlophe, kanti ezinye zazicacile futhi zisobala. Uma ufuna ukuyixazulula, shintsha kusuka kumaphuzu angenhla. Kwesinye isikhathi i-acetic acid ingathinta kakhulu ukudluliselwa kokukhanya. Kuhle ukusebenzisa i-acetic acid ngemuva kwe-dilution. Ithonya elikhulu kakhulu ukuthi ngabe ukusabela kushukunyiswa ngokulinganayo nokuthi isilinganiso sesistimu sizinzile (ezinye izinto zinomswakama futhi okuqukethwe kungazinzile, njengokusebenzisa kabusha izixazululo). Eqinisweni, izinto eziningi zidlala. Ngokuqina kwemishini kanye nokusebenza kwabasebenza abaqeqeshiwe kahle, imikhiqizo ekhiqizwayo kufanele igxile kakhulu. Ukudluliselwa kokukhanya ngeke kudlule uhla lwe- ± 2%, kanye nokufakwa esikhundleni kwe-subsment kwamaqembu angeziwe kufanele kulawulwe kahle. Esikhundleni sokufana, ukudluliselwa kokukhanya nakanjani kuzolunga.
Isikhathi sePosi: Meyi-30-2023