Overview
SBR CM1006 is a cold-emulsion polymerized styrene-butadiene rubber with a styrene content of approximately 23.5%. As one of the most widely produced synthetic rubbers globally, it offers an optimal balance between performance and cost-effectiveness. The CM1006 grade is particularly valued for its consistent quality and processing characteristics, making it a preferred choice for industrial applications requiring durable elastomeric properties. Developed as an alternative to natural rubber, SBR CM1006 demonstrates superior uniformity in molecular structure and better resistance to aging compared to its hot-polymerized counterparts. Its composition can be modified with various additives to achieve specific performance characteristics, allowing for customization based on end-use requirements.
Physical and Chemical Properties
SBR CM1006 exhibits a glass transition temperature (Tg) of about -50°C to -60°C, which contributes to its flexibility at low temperatures. The material typically has a Mooney viscosity (ML 1+4 at 100°C) of 52±5, indicating good processability for mixing and molding operations. Its tensile strength ranges between 20-25 MPa when properly compounded and vulcanized. The polymer's chemical structure provides excellent resistance to water, alcohols, and weak acids, though it shows limited resistance to oils and solvents. The styrene-butadiene ratio in CM1006 is carefully controlled to ensure optimal abrasion resistance and rebound elasticity, making it particularly suitable for dynamic applications where mechanical stress is frequent.
Main Applications
The primary application of SBR CM1006 is in tire manufacturing, where it accounts for about 70% of all SBR consumption. It's particularly valued for passenger tire treads due to its excellent wet grip characteristics and rolling resistance balance. In industrial settings, CM1006 is extensively used in conveyor belt covers where its abrasion resistance significantly extends service life. Footwear manufacturers utilize CM1006 for outsoles and midsoles, benefiting from its durability and cost efficiency. Other applications include vibration dampers, hoses, and rubber-modified asphalt. When blended with natural rubber or other synthetics, CM1006 can be tailored for specific performance requirements in mechanical goods and adhesives.
Safety and Storage
In solid bale form, SBR CM1006 presents minimal health risks, though dust generated during handling may cause mild respiratory irritation. Appropriate personal protective equipment including dust masks is recommended when processing the material. The rubber contains residual monomers that may be released at elevated temperatures, requiring adequate ventilation in processing areas. For storage, CM1006 should be kept in its original packaging until use, protected from direct sunlight, moisture, and temperatures above 40°C. Proper stock rotation (FIFO system) is advised as the material may harden over extended periods. Bales should be stacked no more than 10 high to prevent deformation, with pallets used to maintain air circulation.
B2B Procurement Guide
When procuring SBR CM1006, industrial buyers should verify the material's certificate of analysis for key parameters including Mooney viscosity, styrene content, and volatile matter (typically <0.75%). Reputable suppliers should provide batch-to-batch consistency guarantees, as variations can affect processing and end-product performance. Consider ordering in full container loads (typically 20-25 metric tons) for best pricing, though smaller quantities are available from distributors at a premium. Many manufacturers offer technical support for compound development. For international shipments, ensure proper documentation including SDS and customs classification (HS code 40021910 for most SBR). Payment terms commonly range from LC at sight to 30-60 days credit for established buyers.
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