|
Viscosity index/(ml/g) K-value Average degree of polymerization |
100~120 66 900~1650 |
|||
|
Standard paste viscosity(Brookfield viscosity)/Pa.s |
3.0~6.0 |
|||
|
Apparent density / (g/cm3) |
0.30~0.45 |
|||
|
Grade |
Excellent grade |
Class-A product |
Qualified product |
|
|
Number of impurity particles |
12 |
20 |
40 |
|
|
Volatile component/%≤ |
0.35 |
0.40 |
0.50 |
|
|
Sieve residue /% |
250μm sieve size ≤ |
0 |
0.1 |
0.2 |
|
|
63μm sieve size ≤ |
0.1 |
1.0 |
3.0 |
|
Paste thickening rate (24h)/% ≤ |
100 |
100 |
— |
|
|
Whiteness (160℃,10min)/% ≥ |
80 |
76 |
— |
|
|
Scraper fineness/μm ≤ |
100 |
— |
— |
|
|
VCM residue /(μg/g)≤ |
5 |
5 |
10 |
|
