0102030405
??? ???? ???? ??? ?? ????
????
Methylcellulose ??? ????? ?? ???? ??? ??????? ????? ???? ???? ??? ?? ? ? etherification ???????
Methylcellulose ???? ??? ??? ??? ?? ??? ??? ?? ??? ??? ??? ???? ?????, ?? ??? ???. ?? ???? ?? ??? ????? ???? ?27% ??? 32% ???? ????????? ???? ?????? ???? ??? ????? ????? ???? ???? ????? ? 50 ??? 1000 ????? ????? ????????? ????? ????. ?? ?????? ???? (????) ?10000 ??? 22000 ? ??? ????? ???? ??????? ?? ??? ?????? ????? ????? ??? ?? ????? ???? ????? ??? ??? ??????
????2
???? ?? ????? ?????
1, ????-?? ??? ???-?? ???? ??? ???? ???? ?? ???? ?? ??? ?????
2, ?????-????? ? ??? ? ?????? (1: 1) ???? ??? ??? ???? ????? ??? ??? ???? viscous ???? ???? ????? ? 80-90 o ? ?? ?? ??? ??? ???? ? ????? ??? ??? ????? ? ??? ??? ??? ??? ???? ??? ????? ? ???? ???? ??? ??? ?? ? ???? ?? ????? ??? ??? ?? ???? ????? ???? ??????
3, ??????-??? ??? ?? ?????? ???? ?????? ????? ????? ??????? ?? ??? ?? ??? ????? ?? ???? ?????? ??? ??? ?? ????, ??????? ?? ????? ???. ion-???? ???? ???? ???????? ?? ???? ????, ??? ?? ?? ????? ??? ?? ????? ? pH 2-12 ??? ????? ??.
4, ?????1.3?/??? ????? ????? 0.25-0.7 ?/??3?
5, ???? ???;190-200o ?.
6, ????? ???;225-230o ?.
7, ???? ?????-47-53 ??/?.??.



???? ????
????? ?? ??
?????? ?? | ??????(55AX ?????) |
?????? | 27.0-32.0 |
??? ??? | 50-55 |
??? ???? ??? | ≤5 |
????? ??? | ≤1 |
??? ??? | ≤20 |
?????? ?? | ≤2 |
???. | 5.0-8.0 |
Viscosity | ? viscosity ??? ????? |
Viscosity ?????
??? | ???? ???? | ??? |
???? viscosity | 50 | 40-60 |
100 | 80-120 | |
400 | 350-450 | |
???? viscosity | 1000 | 800-1200 |
2000 | 1600-2400 | |
4000 | 3500-4500 | |
???? ???? viscosity | 30000 | 24000-36000 |
50000 | 45000-55000 | |
75000 | 70000-80000 | |
100000 | 85000-105000 |