| Raw Material: | Synthetic Rubber |
|---|---|
| Material: | Styrene Butadiene Rubber |
| Specification: | 35KG/bag |
|
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| TIANJIN SANZHI PETRO-CHEMICAL CO., LTD. | |||
| SBR 1739 | |||
| Items | Quality index | Method | |
| Appearance | Non-polluting light-colored lump rubber without impurities | Visual measurement | |
Volatiles,%(mass fraction)≤ |
0.5 | GB/T 24131-2009 Hot roll method | |
Aah,%≤ |
0.5 | GB/T4498.1-2013 Method A | |
Organic acids, %(mass fraction) |
3.70-5.70 | GB/T8657-2014 Method A | |
Organic soaps, %(mass fraction) |
0.5 | GB/T8657-2014 Method A | |
Bound styrene, %(mass fraction) |
38.5-41.5 | GB/T 8658-1998 | |
Massed mooney viscosity,ML(1+4)100°C |
48-58 | GB/T1232. 1-2000 Roller method | |
Compound rubber Mooney viscosity,ML(1+4)100°C |
59 | GB/T 8656-1998 Metohod A ASTM IRB No7carbon black ,GB/T1232. 1-2000 |
|
300% Modulus(145°C),MPa (Type I specimen, speed of 500mm/min) |
25min | Measurement is the norm. | GB/T8656-1998GB/T528-1998 Method A ASTM IRB No 7 carbon black, GB528-2009 Type I cutter |
| 35min | 10-17 | GB/T8656-1998GB/T528-1998 Method A ASTM IRB No 7 carbon black, GB528-2009 Type I cutter |
|
| 50min | Measurement is the norm. | GB/T8656-1998GB/T528-1998 Method A ASTM IRB No 7 carbon black, GB528-2009 Type I cutter |
|
Tensile strength (145°C,35min),MPa≥ (Type I specimen, speed of 500mm/min) |
18.6 | GB/T8656-1998GB/T528-1998 Method A ASTM IRB No 7 carbon black, GB528-2009 Type I cutter |
|
Elongation(145°C,35min),%≥ (Type I specimen, speed of 500mm/min) |
380 | GB/T8656-1998GB/T528-1998 Method A ASTM IRB No 7 carbon black, GB528-2009 Type I cutter |
|
Oil content, %(mass fraction) |
25.3-29.3 | SH/T 1718-2015 Method A | |
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