前言虽然人造聚合物材料的发现可溯源至十九世纪中叶,但合成纤维、橡胶和塑料工业取得显著发展则是在三十～四十年代以后。随着各种新的合成聚合物材料制成,人们便利用各种可行的方法对它们的物理性能进行研究,其中最重要的的是力学性能和电气性能。对机械性能资料的需要这是不言而喻的。但从这些新型材料在电缆、电子原件和雷达装置中的应用考虑,介电性能资料也是必不可少的。因此,Von Hippel等对各种聚合物材料在不同频率范围内的介电常数ε′(ν)和损耗因数ε″(ν)作了广泛的收集整理。与 Although the discovery of man-made polymer materials can be traced back to the mid-nineteenth century, remarkable progress has been made in the synthetic fiber, rubber and plastics industries in the 30s and 40s. With a variety of new synthetic polymer materials, people have studied their physical properties in a variety of possible ways, the most important of which are mechanical and electrical properties. The need for mechanical performance data is self-evident. However, from the application of these new materials in cables, electronic components and radar devices, dielectric properties data are also essential. Therefore, Von Hippel and so on a variety of polymer materials in different frequency range of dielectric constant ε ’(ν) and loss factor ε "(ν) made a wide range of collection and finishing.