Thermal Aged Parameters Characteristics of Cables Crosslinked Polyethylene and Accessories Silicone Rubber Materials

The cable is subjected to a variety of influences such as electricity and heat, which may cause damage to the dielectric strength and cause irreversible effects. In this paper, the thermal aging performance of 135 °C and 175 °C was studied by studying the cross-linked polyethylene, carbon black shield, conductive silicone rubber and insulating silicone rubber in the cable body and joint, and the brittle section of the material was observed by scanning electron microscopy. Infrared spectroscopy was used to analyze the absorption peak of the observation material; The crystallization properties of materials were observed by differential scanning calorimetry. Alternating Current breakdown test, broadband dielectric spectrum test and volume resistivity test were used to observe the electrical properties of the material; Tensile experiments were used to observe the mechanical physics of materials.