|
Item
|
Specification
|
|
1.Volatilematter content %
|
≤0.60
|
|
2.Ash %
|
≤0.50
|
|
3.Organic acid %
|
4.50-6.75
|
|
4.Soap %
|
≤0.50
|
|
5. Bound styrene %
|
22.5-24.5
|
|
6.Raw rubber Mooney viscosity , ML(1+4)100℃
|
44-56
|
|
7.Mixing rubber Mooney viscosity, ML(1+4)100℃
|
≤93
|
|
8.300% stress at definite ,elongation (145℃,25min) MPa
|
M±2.5
|
|
9.300% stress at definite ,elongation (145℃,35min) MPa
|
20.6±2.5
|
|
10.300% stress at definite , elongation (145℃,50min) MPa
|
21.5±2.5
|
|
11. Tensile strength (145℃,35min) MPa
|
≥24.5
|
|
12.Elongation at break, (145℃,35min) MPa
|
≥330
|