SBR 1502&SBR 1712
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Synthetic styrene-butadiene rubber |
|
Emulsion polymerized |
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Test Item |
SBR 1502 |
SBR 1712 |
Test method |
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Superior |
Qualified |
Superior |
Qualified |
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Volatile matter content (%, wt) |
≤0.60 |
≤0.90 |
≤0.60 |
≤0.80 |
GB/T 24131 |
|
Ash content (%, wt) |
≤0.40 |
≤0.40 |
GB/T 4498 |
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Organic-acid content (%, wt) |
4.50~6.75 |
3.90~5.70 |
3.65~5.85 |
GB/T 8657 |
|
|
Soap content (%, wt) |
≤0.40 |
≤0.50 |
GB/T 8657 |
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Oil content (%, wt) |
----- |
25.3~29.3 |
24.3~30.3 |
SH/T 1718 |
|
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Bound styrene content (%, wt) |
22.50~24.50 |
22.50~24.50 |
GB/T 8658 |
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Mooney Viscosity Raw Rubber, ML(1+4)100℃ |
45~55 |
44~56 |
44~54 |
43~55 |
GB/T 1232 |
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Mooney Viscosity Compound Rubber, ML(1+4)100℃ |
≤93 |
≤70 |
GB/T 1232 |
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Modulus at 300% 145℃, 35min (MPa) |
16.6~20.6 |
16.1~21.1 |
8.8~12.8 |
8.3~13.3 |
GB/T 8656, GB/T 528 |
|
Tensile Strength 145℃, 35min (MPa) |
≥24.5 |
≥23.5 |
≥19.4 |
≥18.4 |
GB/T 8656, GB/T 528 |
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Elongation at break 145℃, 35min (%) |
≥350 |
≥340 |
≥460 |
GB/T 8656, GB/T 528 |
|
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Appearance |
Non-pollution light yellow rubber |
Pollution dark rubber |
Visual |
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Package: Rubber is wrapped with PE film (thickness: 0.046mm~0.054mm, melting point≤110℃). Package outside is a separate paper-plastic bag (a piece of rubber, 35kg) or a big PE bag (36 pieces of rubber, 1.26MT).
Shelf life: One year from manufacture date.
Storage: Optimum storage temperature is 10℃~35℃, storage warehouse should keep dry and keep away from sunshine. Storage condition reference GB/T 19188 (ISO 7664, IDT).
