HYBRID CORD OF ARAMID CORD AND NYLON 66 AND A PNEUMATIC TIRE USING THE SAME AS A REINFORCING CORD

摘要

PURPOSE: A pneumatic tire for an automobile using a hybrid cord as a reinforcing belt is provided to improve high speed durability and driving stability.;CONSTITUTION: A hybrid cord of aramid cord-nylon 66 has 1-10 range of elasticity ratio of 3-5% of elongation with respect to the elasticity of 0.5-1% of elongation. The twisting number of aramid with large initial elasticity is 200-500 TPM. The twisting number of aramid with small initial elasticity is 50-200 TPM. The hybrid cord of aramid cord-nylon 66 is applied in a pneumatic radial tire as a reinforcing belt.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Modulus(GPa); (BB) Strain(%)