PET板和金属板串联下的介电常数及其影响因素分析

含金属纤维纱线由金属纤维、普通纤维和空气的混合体构成,其介电常数的研究较为复杂。本文采用PET板、铜板和空气以不同方式进行串联,模拟含金属纤维纱线及其理想结构,推导出不同串联方式下介电常数的计算公式。同时,采用介电谱仪测试不同串联方式下的介电常数,表明测试结果和计算结果具有较好的一致性。实验条件下,串联复合体的介电常数随着金属含量增加而增加,随着空气含量和PET含量增加而减少。

The Permittivity of Series-connected PET Plate and Metal Plate and Related Inlfuential Factors

Yarn containing metal fiber is a mixture of metal fiber, conventional fiber and air, and the research on its permittivity is complex. In this paper, the PET plate, copper plate and air are connected in series in different ways to simulate the ideal structure of metal fiber-contained yarns and deduce the calculation formula for the permittivity in different series connections. At the same time, the permittivity in different series connections is tested by the dielectric spectrometer, the test results are in good conformity with the calculation results. Under the experimental conditions, the permittivity of the composite increases with the increase of the metal content, and decreases with the increase of PET content and air content. It can provide guidance for the theoretical study on the permittivity of yarn containing metal fiber.