Using Sulfron to Improve Rolling Resistance and Durability of Tires

Transport sector is a major focus point for the carbon dioxide (CO₂) emission reduction policy around the globe. Approximately 20-30% of vehicles energy consumption can be attributed to tires alone. New legislations which call for stricter regulations on tire performance in terms of rolling resistance, wet grip, tyre noice etc., are set to hit tire industry soon in most parts of the world. Reducing the hysteresis of the tire compounds and thus improving the fuel economy and durability of tires, therefore, remains as an important agenda for the tire industry. Teijin Aramid BV has introduced chemically activated aramid fiber granules (Sulfron^®) that reduce rubber compound hysteresis significantly, which translates into better rolling resistance or fuel economy and improved durability or mileage. The present paper discusses on the mixing aspects of this chemically activated Aramid fiber granule and the influence of different type and amount of carbon blacks on its performance. The effect of various dynamic mechanical testing conditions in the evaluation of Sulfron is presented. Results show that heat build-up measurements carried out in constant force is more suitable to prove the advantages of Sulfron.