Ukudluliselwa kokukhanya kwe-hydroxypropyllllylylylylym methylcellulose kuthinteka ikakhulukazi ngamaphuzu alandelayo:
1. Ikhwalithi yezinto zokusetshenziswa.
Okwesibili, umphumela we-alkalization.
3. Inqubo isilinganiso
4. Ingxenye ye-solvent
5. Umphumela wokungathathi hlangothi
Eminye imikhiqizo inamafu njengobisi ngemuva kokuchithwa, ezinye zimhlophe ezimhlophe, ezinye ziphuzi, kanti ezinye zicacile futhi zisobala ... ukuxazulula le nkinga, shintsha kusuka kumaphoyinti alandelayo. Kwesinye isikhathi i-acetic acid ingathinta kakhulu ukudluliselwa kokukhanya. Kuhle ukusebenzisa i-acetic acid ngemuva kwe-dilution. Umthelela omkhulu kunabo bonke ukuthi ukusabela kushukunyiswa ngokulinganayo nokuthi isilinganiso sesistimu sizinzile (ezinye izinto zinomswakama futhi okuqukethwe kungazinzile, okufana ne-solvent esetshenziselwa ukuphinda usebenzise kabusha). Eqinisweni, kunezici eziningi ezithinta. Uma imishini iqinile futhi opharetha baqeqeshiwe kahle, ukukhiqizwa kufanele kuzinze kakhulu. Ukudluliselwa kokukhanya ngeke kudlule uhla lwe- ± 2%, kanye nokufakwa esikhundleni kwe-subsment kwamaqembu angeziwe kufanele kulawulwe kahle. Esikhundleni sokufana, ukudluliselwa kokukhanya nakanjani kuzolunga.
Izici ezithinta ukubonakala kwe-hydroxypropylylylylylylylylyllose
I-Viscoxyprotional ephezulu i-hydroxypropyll methylcellose ayikwazi ukukhiqiza i-cellulose ephezulu kakhulu ngokubuyiselwa kwe-vacuuming kanye ne-nitrogen esikhundleni sokukhiqiza. Ngokuvamile, ukukhiqizwa kwesethulo esisheshayo eChina ngeke kulawulwe. Kodwa-ke, uma i-Trace Oxygen Ukulinganisa ithuluzi lingafakwa ekalesekeni, ukukhiqizwa kokubonakala kwalo kungalawulwa ngokungemthetho.
yenziwe. Ngaphezu kwalokho, uma ucubungula ijubane lokufakwa esikhundleni se-nitrogen, kulula ukukhiqiza imikhiqizo evuselelayo noma ngabe uhlelo luyini i-Airtight. Vele, izinga le-polymerization kakotini elicwengiwe futhi libalulekile. Uma lokho kungasebenzi, khona-ke kwenze nge-hydrophobic association. Kukhona ama-Association Agents kule ndawo eChina. Hlobo luni lwenhlangano yokuzihlanganisa okufanele ukhethe inethonya elikhulu ekusebenzeni komkhiqizo wokugcina. I-oxygen eyinsalela ku-accouctor ibangela ukonakala kwe-cellulose kanye nokwehla kwesisindo se-molecular, kepha umoya-mpilo osele ulinganiselwe, inqobo nje uma ama-molecule aphukile axhunyiwe, akunzima ukwenza i-viscosity ephezulu. Kodwa-ke, izinga lokuphepha linokuningi okufanele kwenziwe ngokuqukethwe kwe-hydroxypropyl. Amanye amafektri afuna kuphela ukunciphisa izindleko nentengo, kepha akazimisele ukwandisa okuqukethwe kwe-hydroxypropyl, ngakho-ke ikhwalithi ayikwazi ukufinyelela ezingeni ngemikhiqizo efanayo yakwamanye amazwe. Izinga lokugcinwa kwamanzi lomkhiqizo linobudlelwano obuhle ne-hydroxyproppyl, kepha inqubo yonke yokusabela, umphumela we-methyl chloride kanye ne-alkalization accylent oxide, ukugcinwa kwamanzi kanye nokugcinwa kwamanzi. Isilinganiso sokucwilisa ukotini sinquma ukusebenza komkhiqizo.
Isikhathi Seposi: Meyi-23-2023