SBR 1502 is a cold emulsion styrene butadiene rubber (SBR) with 23.5% styrene content, specifically designed for high-performance applications that require excellent physical properties, minimal discoloration, and enhanced durability. It uses a mixed-acid emulsifier, non-staining stabilizer, and salt-acid coagulation to achieve superior performance.
 
Product Description
Type: Cold Emulsion Styrene Butadiene Rubber (SBR)
Characteristics: SBR 1502 is formulated to offer very good abrasion resistance, heat and aging resistance, as well as good mechanical and electrical properties. It also provides resistance to polar solvents and dilute acids.
 
Key Applications
White Sidewall Tires: Ideal for the production of white sidewall tires due to its high abrasion resistance and minimal staining properties.
Footwear: Used in the manufacture of both light and dark-colored footwear where durability and aesthetic appearance are crucial.
Mechanical Goods: Suitable for various mechanical goods that require robust physical properties without the risk of discoloration.
Miscellaneous Applications: Applicable in diverse industrial products where excellent physical properties are essential and minimal discoloration and staining are preferred.
 
Typical Physical Properties
Volatile Matter: Max 0.75 wt% (ASTM D1416), indicating low volatile content for stable processing.
Ash Content: Max 1.5 wt% (ASTM D1416), reflecting minimal inorganic residue after combustion.
Organic Acid Content: 5.875 wt% (ASTM D1416), involved in the emulsification process.
Soap Content: Max 0.5 wt% (ASTM D1416), showing the level of soap used in the emulsion process.
Bound Styrene: 23 wt% (ASTM D1416), contributing to the rubber's mechanical properties.
Raw Viscosity (ML 1+4 @ 100°C): 46 - 58 (ASTM D1646), indicative of the polymer's viscosity and processability.
Compound Viscosity (M 1+4 @ 100°C): Max 84 (ASTM D1646), demonstrating the compound's viscosity after mixing with additives.
Tensile Strength (35 min cured): Min 250 kg/cm² (ASTM D412), showing the material's strength.
Ultimate Elongation (35 min cured): Min 350% (ASTM D412), indicating the material's elasticity.
300% Modulus (35 min cured): 167-207 kg/cm² (ASTM D412), measuring the stress required to elongate the sample to 300% of its original length.
 
Conclusion
SBR 1502 is engineered for high-performance rubber applications where durability, resistance to environmental factors, and superior physical properties are required. Its specific formulation makes it suitable for a broad range of applications, from tires to technical products, offering manufacturers a reliable material that ensures product quality and performance. Its compatibility with food contact applications further broadens its usability, making it a versatile choice in the rubber industry.