Nagella Sivagangi Reddy, Ha Chang-Sik
Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Busan 46241, Republic of Korea.
Nanomaterials (Basel). 2023 Jul 17;13(14):2090. doi: 10.3390/nano13142090.
The rapid development of communication networks (5G and 6G) that rely on high-speed devices requiring fast and high-quality intra- and inter-terminal signal transmission media has led to a steady increase in the need for high-performance, low-dielectric-constant (D) (<2.5) materials. Consequently, low-dielectric polymeric materials, particularly polyimides (PIs), are very attractive materials that are capable of meeting the requirements of high-performance terminal devices that transmit broadband high-frequency signals. However, such a PI needs to be properly designed with appropriate properties, including a low D, low dielectric loss (D), and low water absorptivity. PI materials are broadly used in various fields owing to their superior property/processibility combinations. This review summarizes the structural designs of PIs with low D and D values, low water-absorbing capacity, and high optical transparency intended for communication applications. Furthermore, we characterize structure-property relationships for various PI types and finally propose structural modifications required to obtain useful values of the abovementioned parameters.
依赖高速设备的通信网络（5G和6G）的快速发展，这些设备需要快速且高质量的终端内和终端间信号传输介质，这导致对高性能、低介电常数（D）（<2.5）材料的需求稳步增加。因此，低介电聚合物材料，特别是聚酰亚胺（PI），是非常有吸引力的材料，能够满足传输宽带高频信号的高性能终端设备的要求。然而，这样的PI需要进行适当设计，使其具有包括低D、低介电损耗（D）和低吸水性在内的合适性能。PI材料因其优异的性能/加工性组合而广泛应用于各个领域。本综述总结了用于通信应用的具有低D和D值、低吸水能力和高光学透明度的PI的结构设计。此外，我们表征了各种PI类型的结构-性能关系，最后提出了获得上述参数有用值所需的结构改性。
