Surface metallization of the liquid crystal polymer (LCP) substrate will play a vital role in a large variety of potential technological applications in the high-frequency and high-speed 5G era. However, the pretreatment of surfaces is a major issue in the polymer metallization process. A facile green and mild surface oxidation method is proposed for the fabrication of flexible, stretchable, compressible, for enhanced metal-LCP interfacial adhesion. The surface oxidation process is accomplished by exposing the LCP substrate to the ultraviolet light-activated chlorine dioxide (ClO₂) radical ambiance. The chlorine dioxide radical will chemically alter and modify the LCP substrate surface to promote increased adhesion of the metal and LCP layer during the lamination and electroless plating process. Moreover, flexible metal-LCP substrates are obtained based on the electroless deposition of metal (copper, nickel) on the LCP films. For the case of Cu-LCP substrate, excellent metallic conductivity of 2.6 × 10⁷ S m⁻¹, and excellent fatigue resistance under various deformations are shown. Adhesion strength of the modified LCP was enhanced by increasing the oxidation temperature and time. This work also provides a successful strategy for the pretreatment of other polymer substrates used for the selective metallization with precise patterns.

液晶聚合物（LCP）基板的表面金属化将在高频和高速5G时代的各种潜在技术应用中发挥至关重要的作用。然而，表面的预处理是聚合物金属化工艺中的一个主要问题。提出了一种简便的绿色和温和的表面氧化方法，用于制造柔性、可拉伸、可压缩，以增强金属-LCP 界面粘附力。表面氧化过程是通过将 LCP 基板暴露于紫外光激活的二氧化氯 (ClO ₂) 激进的氛围。二氧化氯自由基会化学改变和修饰 LCP 基板表面，以促进在层压和化学镀过程中金属和 LCP 层的附着力增加。此外，基于金属（铜、镍）在 LCP 薄膜上的化学沉积，获得了柔性金属-LCP 基板。对于Cu-LCP基板，显示出2.6×10 ⁷ S m ^-1的优异金属导电率和各种变形下的优异抗疲劳性。通过增加氧化温度和时间来提高改性 LCP 的粘合强度。这项工作还为用于具有精确图案的选择性金属化的其他聚合物基材的预处理提供了一种成功的策略。