Hot Sell!! Natural Styrene Butadiene 1500 1502 1712 Synthetic Sbr Rubber
sbr rubber sheet description
Testing Item |
Index |
Test Method |
|||
Superior Grade |
First Grade |
Qualified |
|||
Volatile matter(%)≤ |
0.60 |
0.75 |
0.90 |
GB/T6737 |
|
Ash content |
≤0.50 |
GB/T4498A |
|||
Organic acid(%) |
4.50~6.75 |
GB/T8657A |
|||
Soap content(%) |
≤0.5 |
||||
Combinated Styrene content(%) |
22.5~24.5 |
GB/T8658 |
|||
|
Raw rubber mooney viscosity ML(1+4)100°C |
45~55 |
44~56 |
GB/T1232.1 |
||
|
Compounded rubber mooney viscosity ML(1+4)100°C≤ |
93 |
||||
|
300% Stretching Stress (145°C)/MPa |
25min |
15.2~19.1 |
14.7~19.6 |
GB/T8656A |
|
35min |
20.6±2.0 |
20.6±2.5 |
|||
50min |
21.5±2.0 |
21.5±2.5 |
|||
|
Tensile strength (145°C, 35min)/MPa |
≥25.5 |
≥25.5 |
≥24.5 |
||
|
Elongationg at break (145°C, 35min)/% |
≥340 |
≥330 |
|||
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