XLPE material, which is widely used as a polymeric insulator in medium and high voltage applications, plays an active and important role in electricity transmission and distribution. The aging of XLPE materials due to various factors is inevitable. It is observed that fault and troubleshooting increase with the aging of materials. Wettability behavior is one of the fundamental surface properties of materials. Surface properties also play an important role in the determination and estimation of the service life of the materials. By performing contact angle measurements for XLPE material surfaces, determinations and evaluations about the wettability behavior (hydrophobicity and hydrophilicity) of the materials can be made. In this study, contact angle measurements of XLPE materials with different roughness values were carried out under the electric field. With the help of the experimental setup designed and implemented, XLPE samples were placed between the aluminum plane electrodes and exposed to the electric field. 10 kV HVDC high-voltage generator was used when performing the measurements. 1.8 M (molarity) saltwater in the volume of 20 µl was dropped on the XLPE sample surface with a syringe and the droplet snapshots were taken with a digital microscope for contact angle measurement under the electric field. The acquired images were processed using basic image processing techniques with the help of a GUI developed on the MATLAB software platform. Contact angle values were obtained for 50 XLPE-A (Ra = 0.469 µm) and 50 XLPE-B (Ra = 5.456 µm) sample surfaces. Contact angles obtained from rough XLPE surfaces under the electric field allow for evaluation of the service life of XLPE materials. While determining and evaluating the wettability behavior of XLPE materials, an approach based on the contact angle is presented. As a result, the correlation between the electric field, surface roughness, wettability, and contact angle was observed. When the results were evaluated, it was observed that the contact angle values close to the hydrophobic surface value approached the hydrophilic values as a result of the increase in surface roughness and/or exposure to the electric field.

XLPE 材料广泛用作中高压应用中的聚合物绝缘体，在电力传输和分配中发挥着积极而重要的作用。XLPE材料由于各种因素老化是不可避免的。观察到故障和故障排除随着材料的老化而增加。润湿性行为是材料的基本表面特性之一。表面特性在确定和估计材料的使用寿命方面也起着重要作用。通过对 XLPE 材料表面进行接触角测量，可以确定和评估材料的润湿性（疏水性和亲水性）。在这项研究中，不同粗糙度值的 XLPE 材料的接触角测量是在电场下进行的。借助设计和实施的实验装置，将 XLPE 样品放置在铝平面电极之间并暴露在电场中。进行测量时使用了 10 kV HVDC 高压发生器。用注射器将 20 µl 体积的 1.8 M（摩尔浓度）盐水滴在 XLPE 样品表面，并用数码显微镜拍摄液滴快照，用于在电场下测量接触角。在 MATLAB 软件平台上开发的 GUI 的帮助下，使用基本图像处理技术处理获得的图像。获得了 50 XLPE-A (Ra = 0.469 µm) 和 50 XLPE-B (Ra = 5.456 µm) 样品表面的接触角值。在电场下从粗糙的 XLPE 表面获得的接触角允许评估 XLPE 材料的使用寿命。在确定和评估 XLPE 材料的润湿行为时，提出了一种基于接触角的方法。结果，观察到电场、表面粗糙度、润湿性和接触角之间的相关性。当评估结果时，观察到接近疏水表面值的接触角值接近亲水值，因为表面粗糙度增加和/或暴露于电场。提出了一种基于接触角的方法。结果，观察到电场、表面粗糙度、润湿性和接触角之间的相关性。当评估结果时，观察到接近疏水表面值的接触角值接近亲水值，因为表面粗糙度增加和/或暴露于电场。提出了一种基于接触角的方法。结果，观察到电场、表面粗糙度、润湿性和接触角之间的相关性。当评估结果时，观察到接近疏水表面值的接触角值接近亲水值，因为表面粗糙度增加和/或暴露于电场。