Overview
High Styrene is a synthetic rubber material characterized by its high styrene content, typically ranging from 40% to 80% in commercial formulations. This polymer blend combines the elasticity of polybutadiene with the rigidity and processability of polystyrene, resulting in a versatile material with unique mechanical properties. Developed in the mid-20th century, high styrene rubber has become particularly valuable in applications requiring a balance between flexibility and hardness. The material can be compounded with various additives to achieve specific performance characteristics, making it adaptable to diverse industrial requirements.
Physical and Chemical Properties
High Styrene exhibits excellent resilience and abrasion resistance, along with good compression set properties. The material's hardness typically ranges from 50 to 90 Shore A, depending on the styrene content and compounding formulation. Its tensile strength is generally between 10-20 MPa, with elongation at break of 300-600%. The polymer demonstrates good resistance to water, weak acids, and alkalis, though it is susceptible to degradation by strong oxidizing agents and certain organic solvents. High Styrene maintains its properties across a temperature range of approximately -30°C to +70°C, making it suitable for most ambient applications.
Main Applications
The footwear industry is the largest consumer of High Styrene, particularly for shoe soles where its combination of cushioning and durability is highly valued. It's commonly used in casual footwear, sandals, and certain athletic shoes where a balance of comfort and wear resistance is required. Other significant applications include adhesives (especially pressure-sensitive types), flooring materials, and various molded rubber products. In industrial settings, High Styrene is used for vibration dampening components, rubber rollers, and certain types of gaskets where its specific mechanical properties are advantageous.
Safety and Storage
High Styrene presents relatively low health risks in its solid form, though dust generated during processing should be controlled through proper ventilation or dust collection systems. The material is not classified as hazardous under normal handling conditions. For storage, High Styrene should be kept in original packaging or sealed containers to prevent contamination. Optimal storage conditions include temperatures below 30°C and relative humidity below 70%. The material has a typical shelf life of 12-24 months when stored properly, though this may vary by specific formulation.
B2B Procurement Guide
When procuring High Styrene, buyers should clearly specify the required styrene-butadiene ratio (typically expressed as S/B ratio), which directly affects hardness and other mechanical properties. Other critical specifications include Mooney viscosity (ML 1+4 at 100°C), which indicates processability, and required physical properties like tensile strength and elongation. Bulk purchases (typically in 25kg bags or larger containers) offer cost advantages, with prices generally decreasing with order volume. Lead times vary by supplier but typically range from 2-6 weeks for standard formulations. Buyers should verify supplier certifications (such as ISO 9001) and request technical data sheets for quality assurance.
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