Thermomechanical properties of tire cords, which have a considerable influence on tire functions, were investigated in the current research. The nylon and polyester cords are the most commonly used polymers in the tire. Many efforts have been made to produce a new tire cord having the capability of integrating the desired properties of these two polymers into one cord. In this study, a new cord structure was developed using nylon 6,6 and polyester tire yarns. The effect of thermal treatment was studied at the temperatures of 180°C, 200°C, and 220°C under two different loads of 600 and 1800gf on thermomechanical properties of the nylon 6,6/polyester hybrid tire cord. Shrinkage and shrinkage force as thermal properties, as well as static and dynamic mechanical properties, were investigated. The relationship between the aforementioned properties and variation in the crystal structure and fiber orientation obtained from Differential scanning calorimetry (DSC) and Wide‐Angle X‐Ray Scattering (WAXS) analysis were examined too. The results showed that the higher tension leads to the higher initial modulus and storage modulus due to the crystallization of polymers during heat treatment. The shrinkage and shrinkage force also increased, as the tension increased. In addition, a decrease in residual shrinkage and shrinkage force were acquired because of an enhancement in the temperature.

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混合轮胎帘线的热力学性能研究

在当前的研究中，研究了轮胎帘线的热机械性能，该性能对轮胎的功能有相当大的影响。尼龙和聚酯帘线是轮胎中最常用的聚合物。已经做出了许多努力来生产一种新的轮胎帘线，该轮胎帘线具有将这两种聚合物的所需特性整合到一根帘线中的能力。在这项研究中，使用尼龙6,6和聚酯轮胎纱线开发了一种新的帘线结构。研究了在600、1800gf两种不同载荷下，分别在180°C，200°C和220°C的温度下热处理对尼龙6,6 /聚酯混合轮胎帘线的热机械性能的影响。研究了作为热性能的收缩力和收缩力，以及静态和动态力学性能。还检查了上述性质与通过差示扫描量热法（DSC）和广角X射线散射（WAXS）分析获得的晶体结构和纤维取向变化之间的关系。结果表明，较高的张力导致较高的初始模量和储能模量，这归因于聚合物在热处理过程中的结晶。随着张力增加，收缩率和收缩力也增加。另外，由于温度升高，残留收缩率和收缩力降低。结果表明，较高的张力导致较高的初始模量和储能模量，这归因于聚合物在热处理过程中的结晶。随着张力增加，收缩率和收缩力也增加。另外，由于温度升高，残留收缩率和收缩力降低。结果表明，较高的张力导致较高的初始模量和储能模量，这归因于聚合物在热处理过程中的结晶。随着张力的增加，收缩率和收缩力也增加。另外，由于温度升高，残留收缩率和收缩力降低。