| 摘要 |
PURPOSE: A polymer foam tire composition is provided to provide a tire which has a reduced softening even under high temperature environment, has grip force and elasticity, and has excellent physical property. CONSTITUTION: A polymer foam tire composition comprises a blend of an olefin block copolymer, crosslinking agents, and foaming agent. The olefin block copolymer includes an ethylene and one or more alpha-olefin copolymers, and is a multiblock copolymer which has a plurality of blocks or segments of two or more polymerized monomer units with different chemical or physical properties from each other. The amount of the olefin block copolymer and rubber are respectively 50-80 wt% and 20-50 wt%, based on the total weight of the polymer substrate. |
