Styrene butadiene rubber (SBR)
Typical specification
Item | Standard |
Appearance | White or slightly yellow solid |
Volatiles, % | 0.9max |
Ash, % | 0.5max |
Organic acid, % | 4.50-6.75 |
Soap, % | 0.5max |
Bound styrene, % | 22.5-24.5 |
Raw viscosity ML(1+4)100 | 44-56 |
Compound viscosity ML(1+4)100 | 93max |
300% modulus 145°C 25min, MPa | 15.5±2.5 |
300% modulus 145°C 35min, MPa | 20.6±2.5 |
300% modulus 145°C 50min, MPa | 21.5±2.5 |
Tensile strength 145°C 35min, MPa | 24.5min |
Elongation at break 145°C 35min, % | 330b min |
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