The use of reinforced polymers as cores of transmission cables can provide significant advantages compared to traditional steel cores, such as high tensile strength, low thermal expansion coefficients, and low sag between towers. This work evaluates the applicability of pultruded rods consisting of phenol–formaldehyde resin reinforced with carbon fiber as cores of transmission cables. In this work, the samples were divided into three groups: samples without aging, and samples UV and thermally aged. At first, a dynamic mechanical analysis was performed on samples without aging in order to determine the viscoelastic properties of the material based on the application to see if it would be compatible. In addition to this test, tensile strength and Young's modulus were determined for the three groups. Since the composite cores are susceptible to creep in high temperatures, the applicability must be below the glass transition temperature. Regarding creep behavior, results showed that at a reference temperature of 100 °C, the stress level necessary to cause failure after 50 years was 89% of the ultimate strength. The results of tensile tests were favorable for application of the pultruded system as transmission cables cores and the accelerated aging affected positively in these composites.

与传统钢芯相比，使用增强聚合物作为传输电缆的芯线可以提供显着的优势，例如高抗拉强度、低热膨胀系数和低塔间下垂。这项工作评估了由碳纤维增强的酚醛树脂组成的拉挤杆作为传输电缆的芯线的适用性。在这项工作中，样品分为三组：未经老化的样品，以及经过紫外线和热老化的样品。首先，对未老化的样品进行动态力学分析，以确定基于应用的材料的粘弹性能，看看它是否兼容。除了该测试之外，还确定了三组的拉伸强度和杨氏模量。由于复合芯材在高温下容易蠕变，因此适用性必须低于玻璃化转变温度。关于蠕变行为，结果表明，在 100 °C 的参考温度下，50 年后导致失效所需的应力水平为极限强度的 89%。拉伸试验的结果有利于拉挤系统作为传输电缆芯的应用，加速老化对这些复合材料有积极影响。