Description
SBR 1712 is an emulsion-polymerized styrene-butadiene rubber extended with high aromatic oil. It stands out for high adhesion and outstanding processability. Different from general-purpose SBR 1502, this grade is specially designed for applications that require superior bonding performance. Manufactured via emulsion polymerization using butadiene and styrene monomers, it incorporates high aromatic hydrocarbon oil during production. The material is supplied as pale yellow blocks or granules with a faint aromatic odor. It features excellent processing plasticity, ideal for black rubber products including tire treads, conveyor belts and rubber hoses. This grade achieves an optimal balance between abrasion resistance and processing ease.
Product Index
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Test Item |
SBR 1712 |
Test method |
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Superior |
Qualified |
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Volatile matter content (wt%) |
≤0.60 |
≤0.80 |
GB/T 24131 |
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Ash content (wt%) |
≤0.40 |
GB/T 4498 |
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Organic-acid content (wt%) |
3.90~5.70 |
3.65~5.85 |
GB/T 8657 |
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Soap content (wt%) |
≤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 |
GB/T 8658 |
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Mooney Viscosity Raw Rubber, [ML1+4(100℃)] |
44~54 |
43~55 |
GB/T 1232 |
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Mooney Viscosity Compound Rubber, [ML1+4(100℃)] |
≤70 |
GB/T 1232 |
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Modulus at 300% elongatio ( 145℃ , 35min) (MPa) |
8.8~12.8 |
8.3~13.3 |
GB/T 8656, GB/T 528 |
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Tensile Strength (145℃,35min) (MPa) |
≥19.4 |
≥18.4 |
GB/T 8656, GB/T 528 |
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Elongation at break ( 145℃, 35min) (%) |
≥460 |
GB/T 8656, GB/T 528 |
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Appearance |
Pollution dark rubber |
Visual |
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Applications
1. Tire Manufacturing: Suitable for passenger car tires, light truck tires, electric vehicle and motorcycle tires, applied in tread, sidewall and retread compounds. It features outstanding abrasion resistance, balanced grip and stable dynamic heat build-up. With good formula compatibility, it is ideal for large-scale tire production.
2. Industrial Conveying & Transmission Belts: For rubber belts including industrial conveyor belts, V-belts and power transmission belts. It withstands continuous friction and repeated flexing, with excellent fatigue resistance and wear resistance, improving operational stability and extending service life of belts.
3. Rubber Footwear Products: Used for black outsoles and heels of safety shoes, work boots and rain boots. It offers good flowability during processing and stable dimensional performance, along with excellent flex-crack resistance to prevent outsole breakage for enhanced durability.
4. Precision Industrial Rubber Components: Applicable to various dark-colored rubber parts by compression molding and extrusion, such as shock pads, buffers, gaskets, dust boots, rubber hoses and construction machinery rubber profiles. Good processability. Suitable only for dark products; not recommended for light-colored goods or applications requiring no migration.
5. General Black Industrial Rubber Articles: Highly versatile for manufacturing rubber sheets, waterproof construction rubber parts, cable rubber sheaths and other black industrial rubber components, covering a wide range of industrial rubber applications.
Product advantages
The core advantage lies in the oil-filled formula, which offers strong processing plasticity. During mixing, it is less likely to stick to the rollers or undergo scorching, resulting in smooth molding and significantly enhancing production efficiency. It has excellent adhesion, with strong bonding between rubber layers and between rubber and the reinforcing material, reducing the risk of product delamination. Its wear resistance is outstanding, enabling the extension of the service life of products such as tires and conveyor belts. It has good compatibility with natural rubber and other synthetic rubbers, allowing for flexible adjustment of performance through blending ratios. The cost is moderate, with high cost-effectiveness. It is the preferred raw material for black rubber products, featuring low heat generation and excellent low-temperature flexibility.
Packaging
The rubber is wrapped with PE film as inner packaging. The outer package adopts individual paper-plastic composite bags or large PE bags.
Validity
12 months
FAQ
1. What are the unique production advantages of oil-filled SBR 1712 during rubber compounding?
Thanks to its professional oil-filled formula, SBR 1712 effectively solves common production pain points. It avoids roller sticking and scorching during the mixing process, ensures smooth extrusion and molding, and greatly improves production efficiency. Meanwhile, its moderate Mooney viscosity (44-54) provides stable and uniform plasticity, lowering the failure rate of large-scale continuous industrial production.
2. What storage conditions are required to guarantee its 12-month shelf life?
To maintain the original performance and technical indicators of SBR 1712 within 12 months, it needs to be stored in a dry, cool, ventilated and dust-free warehouse environment, avoiding direct sunlight, high temperature and humid stacking environments. Meanwhile, avoid long-term heavy pressure to prevent rubber block deformation, and keep away from chemical corrosives to ensure stable volatility and ash content indicators.
3. Why is SBR 1712 restricted to dark rubber products only?
SBR 1712 is filled with high aromatic hydrocarbon oil, which brings excellent processing fluidity and wear resistance but causes color migration and contamination. This inherent property makes it unsuitable for light-colored, transparent, or high-cleanliness rubber products. It is exclusively applicable to all kinds of black industrial rubber goods as designed.
4. Can SBR 1712 be blended with other rubbers, and what is the blending effect?
SBR 1712 has excellent compatibility with natural rubber and other synthetic rubbers such as polybutadiene rubber. Flexible adjustment of the blending ratio can balance the overall performance of rubber compounds. It can compensate for the poor wear resistance and high heat generation of natural rubber, optimize the flex crack resistance and dynamic stability of the compound, and meet customized performance requirements of different rubber products.
5. What makes SBR 1712 superior for tire and conveyor belt manufacturing?
For tire production, it delivers balanced ground grip, stable dynamic heat build-up and outstanding abrasion resistance, adapting to long-term dynamic operation of tires and reducing tire wear. For conveyor and transmission belts, its excellent anti-fatigue and repeated flexing resistance effectively resists aging and damage caused by long-term friction and bending, significantly extending the service life of belt products compared with ordinary general rubber grades.
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