SBR (Styrene Butadiene Rubber)

Characteristics
The most widely used synthetic rubber in the entire world is SBR, a copolymer of styrene and butadiene. SBR is weak and unusable without reinforcement by carbon black, but with carbon black it is strong and abrasion–resistant. The defects of SBR are poor resistant to oil and not suitable in weathering, UV, oxygen & ozone because the double bond in the polymer backbone.

Service Temperature
The Service Temperature of SBR can be designed from -55℃ to 100℃.

Hardness
50 to 70 (Shore A).

Application
SBR is widely used in tire, footwear, tape, and conveyor belt, where it is blended with natural rubber.