Styrene Butadiene Rubber (SBR)

Styrene-Butadiene rubber (SBR or Styrene-butadiene) is a synthetic rubber comprising of styrene and butadiene monomers. The random copolymer has characteristics like natural rubber and contains:

Styrene content in the range of 10-25% contributing to good wearing and bonding characteristics

While the butadiene unit is composed approximately 60 to 70% trans-1,4; 15 to 20% cis-1,4; and 15 to 20% 1,2 configurations for the polymer at 50°C.

Key benefits of SBR include:

Abrasion resistance

Perfect impact strength

Good resilience

High tensile strength

Also, when compared with polybutadiene rubber alone, styrene-butadiene rubber has improved strength, abrasion resistance, and blend compatibility. These properties are further enhanced with the use of additives.

Main applications of styrene butadiene rubber include tires and tire products, automotive parts and mechanical rubber goods.