| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance the heat resistance of carcass cords, and to improve run-flat durability. <P>SOLUTION: A carcass is composed of a carcass ply comprising the carcass cords arranged at an angle of 70-90 degrees to the tire circumferential direction and covered with topping rubber. Aramid fiber cords are used for the carcass cords, and rubber physical properties of a clinch part are a tanδof at most 0.13 measured at a temperature of 70°C and the dynamic distortion of 2% and a complex elastic modulus E<SP>*</SP>of 5.0-10.0 Mpa. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
