Stiren Butadien Kauçuk 1712

Description of Styrene Butadiene  Rubber SBR 1712

Styrene Butadiene Rubber 1712 is a cold polymerized, 23.5% styrene paint of the SBR type extended with 37.5 parts highly aromatic oil. The raw materials for this elastomer are carefully selected to produce the best physical properties and processing characteristics at an economical cost.

Types 1500-1599 are Cold Rubber Types; types 1700-1799 are Oily Cold Rubber types. the most popular products are SBR 1502, SBR 1712 and SBR 1723.

Styrene Butadiene Rubber (SBR) 1712 is a widely used synthetic rubber, notable for its balanced properties and versatility in various applications. Here are the key characteristics and properties of SBR 1712:

  1. Composition :
    – SBR 1712 is a copolymer of styrene and butadiene, typically produced via emulsion polymerization.
    – It contains about 23.5% styrene and 76.5% butadiene.
  2. Physical Properties :
    –  Appearance : SBR 1712 usually appears as a light-colored, free-flowing granule or bale.
    –  Mooney Viscosity : Typically in the range of 45-55 ML (1+4) at 100°C.
    –  Specific Gravity : Around 0.94.
  3. Mechanical Properties :
    –  Tensile Strength : High tensile strength, making it suitable for applications requiring durability.
    –  Elongation at Break : High elongation, providing good flexibility and resilience.
    –  Hardness : Can be varied depending on the specific formulation and compounding additives used.
  4. Thermal Properties :
    –  Glass Transition Temperature (Tg) : Approximately -50°C, which influences its performance in low-temperature applications.
  5. Chemical Resistance :
    – Good resistance to water, alcohols, and weak acids.
    – Moderate resistance to oils and greases, though it can be compounded to enhance this property.
  6. Aging and Weather Resistance :
    – Generally good aging properties when properly compounded.
    – Moderate resistance to ozone and UV radiation, but can be improved with additives.
  7. Processing :
    – SBR 1712 is easy to process using conventional rubber manufacturing techniques like extrusion, molding, and calendaring.
    – It blends well with other rubbers and fillers, allowing for a wide range of property modifications.
  8. Applications :
    –  Tires and Tire Products : Frequently used in the tread and sidewall of passenger and light truck tires.
    –  Footwear : Commonly used in shoe soles due to its abrasion resistance and durability.
    –  Industrial Goods : Hoses, belts, gaskets, and other molded and extruded products.
    –  Adhesives and Sealants : Its good bonding properties make it useful in various adhesive formulations.

Different types of SBR

here are two different types of SBR rubber polymer:

  • emulsion SBR
  • solution SBR

Styrene Butadiene Rubber 1712

Storage of SBR 1712

Proper storage of SBR 1712 is crucial to maintaining its quality and extending its shelf life. Here are the key guidelines for storing SBR 1712:

  1. Temperature :
    – Store in a cool, dry place away from direct sunlight and heat sources.
    – Ideal storage temperature is between 10°C to 25°C (50°F to 77°F).
  2. Humidity :
    – Keep in an environment with low humidity to prevent moisture absorption.
    – Avoid areas with high humidity or significant temperature fluctuations that can cause condensation.
  3. Ventilation :
    – Ensure good ventilation to avoid the buildup of fumes from any residual processing chemicals.
  4. Packaging :
    – Store in original packaging or airtight containers to prevent contamination and oxidation.
    – If repackaged, use materials that are resistant to the chemicals in SBR, such as polyethylene bags or coated containers.
  5. Protection from Contaminants :
    – Keep away from dust, dirt, and other potential contaminants.
    – Store off the ground and use pallets if necessary.
  6. Chemical Interactions :
    – Avoid storing near strong oxidizing agents, solvents, or other chemicals that could react with the rubber.
  7. Handling :
    – Handle with clean gloves to avoid contamination with oils, dirt, or other substances.
    – Avoid rough handling that could damage the material.
  8. Storage Duration :
    – Follow the manufacturer’s recommendations regarding maximum storage time to ensure material properties are maintained.
    – Typically, SBR should be used within a year of production for optimal performance.

Packaging of SBR 1712

SBR 1712 packed in 36 bales of 35 kg wrapped with polyethylene film in a 1260 kg pallet or 30 bales of 30 kg wrapped with polyethylene film in a 900 kg pallet

Specification of Butadiene Rubber SBR 1712

Typical Properties Units Values Test method
Raw Mooney viscosity MU 42-52 ASTM D1646
Volatile Material % wt < 0.75 ASTM D5668
Ash Content % wt < 0.5 ASTM D5667
Organic acids % wt 3.9-5.7 ASTM D 5774
Soaps % wt <0.5 ASTM D 5774
Bounded styrene % wt 22.5-24.5 ASTM D 5775
Oil Content % wt 25.8-28.8 ASTM D 5775
Compound Mooney viscosity2 MU <62 ASTM D 1646
Tensile strength (35 min cured)2 KG/CM2 >200 ASTM D 412
Ultimate elongation (35 min cured)2 % >530 ASTM D 412
300% Modulus (35 min cured)2 Kg/cm2 79-109 ASTM D 412

 

Styrene Butadiene Rubber 1712

Specification of Butadiene Rubber SBR 1712