IMPACT OF HALOBUTYL RUBBER INNERLINERS ON TIRE PERFORMANCE (Paper No. 23)

摘要

Halobutyl rubber is the polymer of choice in the tire innerliner compound due to its excellent air and moisture impermeability, and excellent flex-fatigue resistance. The inflation pressure of the tire generally impacts the rolling resistance, treadwear, handling, and durability. Tire inflation pressure (IPR) retention, as measured by percent air loss per month, is a key parameter to improved tire performance. Results will compare laboratory data of innerliner compounds made with varying amounts of halobutyl rubber and natural rubber, to performance data of tires made with these same compounds. Use of 100 phr of halobutyl rubber in the innerliner compound leads to a tire with desirably low IPR values, low tire intracarcass pressure (ICP) values, and to increased tire durability as measured in hours to failure on indoor road wheel testers.