BR (Butadiene Rubber) is a synthetic rubber produced by the polymerization of 1,3-butadiene monomer. It can be manufactured via Emulsion Polymerization (EBR) or Solution Polymerization (SBR), with each method providing slightly different characteristics. BR is one of the most important synthetic rubbers in the rubber industry due to its excellent elasticity and outstanding impact resistance.
BR is known for its high elasticity, allowing it to retain and recover its shape after stretching or compression. It has excellent impact resistance, making it ideal for repeated-load applications. It offers superior abrasion resistance, with high durability under constant friction. Its high resilience makes it suitable for shock-absorbing purposes. BR also has excellent low-temperature flexibility, maintaining elasticity at temperatures down to -50 °C. However, it has poor resistance to oils and hydrocarbon solvents, and limited resistance to ozone and outdoor weathering, which is why it is often blended with other rubbers to improve these weaknesses.
Typically operates between -50 °C and +90 °C
Well-suited for cold climates or low-temperature applications
BR is widely used in the tire industry, especially for treads and sidewalls to improve durability and grip. It is also used in sports equipment such as golf balls, hockey pucks, and basketballs; footwear and shoe soles for enhanced flexibility and durability; shock-absorbing components such as seals, pads, and vibration dampers; and winter tire compounds, as it maintains elasticity in cold weather.
