Abstract
This chapter provides an overview of elastomer blends in tires. A tire must be flexible enough to deform repeatedly from its doubly curved surface to a plane surface when it comes in contact with the road—without being stressed past its yield point or sustaining fatigue failure—and rigid enough to develop substantial forces in any direction. The conventional tire has three distinct structural features: (1) rubber compounds to provide road contact, to contain air, and to insulate the textile cords; (2) textile cords for rigidity and strength; and (3) steel beads to connect the tire to the wheel of the car. Rubber blends are utilized to assist in achieving the best balance of properties in each portion of the tire. The most commonly used elastomers in tire compounds are styrene butadiene rubber, natural polyisoprene rubber, natural polyisoprene rubber, butyl rubber, and ethylene propylene rubber. The chapter also highlights the properties of vulcanized elastomer blends, such as higher tensile strength, abrasion and skid resistance, fatigue resistance, and aging and ozone resistance.
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