synthetic butadiene rubber is used in rubber compound to increase the hardness and other physical properties
synthetic butadiene rubber
Item | Unit | Super grade | First grade | Qualified grade |
Volatilization | % | ≤0.75 | ≤1.00 | ≤1.30 |
Total ash | % | ≤0.75 | ≤1.00 | ≤1.50 |
Organic acid | % | 4.50-6.75 | 4.50-7.00 | 4.50-7.00 |
Soap | % | ≤0.50 | ≤0.50 | ≤0.50 |
Combine styrene | % | 22.50-24.50 | 22.50-24.50 | 22.50-24.50 |
Crude rubber Mooney viscosity 100C MLI+4 | % | 45-55 | 45-56 | 45-57 |
Mix rubber Mooney viscosity 100C MLI+4 | % | ≤90 | ≤90 | ≤90 |
25 min | Mpa | 11.30-15.80 | 10.8-16.30 | 13.0-19.50 |
300%Stress at definite elongation 145°C×35min | Mpa | 14.1-18.6 | 13.6-19.1 | 13.0-19.50 |
300%Stress at definite elongation 145°C×50min | Mpa | 14.9-19.4 | 14.4-19.9 | 13.0-19.50 |
Tensile strength 145°C×50min | % | ≥23.7 | ≥22.50 | ≥22.50 |
Elongation at failure 145°C×50min | % | ≥415 | ≥400 | ≥400 |
