| Features | easy to process |
| Application | Oil-extended styrene-butadiene rubber, used for tread rubber, conveyor belt and hose of passenger car wheels |
Item | Index | Test method | Result | Conclusion | |
Superior product | Qualified product | ||||
Appearance | Non-polluting block light-colored glue, free of coking particles, sand and mechanical impurities. | Visually | Normal | Superior | |
Volatile matter(%)≤ | 0.60 | 0.60 | GB/T 24131.1- 2018,hot roll method B2 | 0.13 | Superior |
Organic acid(%) | 3.90~5.7 | GB/T 8657- 2014 ,B method | 4.66 | Superior | |
Soap content(%)≤ | 0.50 | 0.16 | Superior | ||
Bound styrene(%) | 22.5~24.5 | GB/T 8658-1998 | 23.4 | Superior | |
Raw Rubber Mooney Viscosity , ML(1+4)100℃ | 44 54 | 44 56 | GB/T 1232.1- 2016,Over roll method | 49 50 | Superior |
Compound Mooney Viscosity， ML(1+4)100℃≤ | 70 | GB/T 1232.1- 2016(ASTM IRB No.8) | 58 | Superior | |
300% Stress at modulus (145℃,35min)(MPa) | 8.8 | 12.8 | GB/T 8656-2018 A ( ASTM IRB No.8), GB/T 528-2009(1 cut knife) | 9.2 | Superior |
Tensile Strength (145℃,35min)(MPa)≥ | 19.4 | 19.4 | 20.7 | Superior | |
Elongation at break (145℃,35min)(%)≥ | 460 | 460 | 588 | Superior | |
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| Features | easy to process |
| Application | Oil-extended styrene-butadiene rubber, used for tread rubber, conveyor belt and hose of passenger car wheels |
Item | Index | Test method | Result | Conclusion | |
Superior product | Qualified product | ||||
Appearance | Non-polluting block light-colored glue, free of coking particles, sand and mechanical impurities. | Visually | Normal | Superior | |
Volatile matter(%)≤ | 0.60 | 0.60 | GB/T 24131.1- 2018,hot roll method B2 | 0.13 | Superior |
Organic acid(%) | 3.90~5.7 | GB/T 8657- 2014 ,B method | 4.66 | Superior | |
Soap content(%)≤ | 0.50 | 0.16 | Superior | ||
Bound styrene(%) | 22.5~24.5 | GB/T 8658-1998 | 23.4 | Superior | |
Raw Rubber Mooney Viscosity , ML(1+4)100℃ | 44 54 | 44 56 | GB/T 1232.1- 2016,Over roll method | 49 50 | Superior |
Compound Mooney Viscosity， ML(1+4)100℃≤ | 70 | GB/T 1232.1- 2016(ASTM IRB No.8) | 58 | Superior | |
300% Stress at modulus (145℃,35min)(MPa) | 8.8 | 12.8 | GB/T 8656-2018 A ( ASTM IRB No.8), GB/T 528-2009(1 cut knife) | 9.2 | Superior |
Tensile Strength (145℃,35min)(MPa)≥ | 19.4 | 19.4 | 20.7 | Superior | |
Elongation at break (145℃,35min)(%)≥ | 460 | 460 | 588 | Superior | |
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