Japan Synthetic Rubber Corporation (JSR) has announced the development of a new styrene-butadiene rubber (SBR) for automotive tires. This new SBR has a significant increase in mechanical strength, wear resistance and durability.
With the development of new generation vehicles, including electric vehicles, networked vehicles and self-driving vehicles, tire performance requirements are changing. In addition to improving fuel efficiency and reducing CO2 emissions, tires must also have high strength, high wear resistance and high durability, especially for new generation vehicles. To meet these needs, JSR has developed a new SBR using its proprietary synthesis technology, which has a much higher mechanical strength than traditional SBR.
The material is said to incorporate JSR's unique polymerization and hydrogenation technologies to control the amount of unsaturated bonds in the material. Through this process, the interaction between the polymer molecules can be optimized and the stress generated in the crosslinking can be minimized. Therefore, this new SBR not only has twice the mechanical strength of conventional SBR, but also its strength exceeds that of natural rubber. Compared with the conventional SBR tread tire, the tire with this new SBR as the tread rubber has a wear resistance of more than 50%, while the fuel consumption is also reduced, and the grip performance is improved.