Sheets of silicone rubber (SiR) were aged under various aging conditions to examine its effects on the mechanical and dielectric properties of SiR. Mainly by analyzing the results obtained by mid-infrared absorption spectroscopy, it has become clear that cross-linked structures with siloxane bonds are formed under all the conditions. This makes SiR hard and then brittle, but it also makes better the dielectric properties apparently. An early stage of degradation in SiR can be detected by EAB and complex electric modulus, which is defined as the reciprocal of complex permittivity. Therefore, EAB and complex electric modulus are useful to monitor the aging status of SiR.

中文翻译：

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严重老化引起硅橡胶机械和介电性能的变化

硅橡胶 (SiR) 片材在各种老化条件下老化，以检查其对 SiR 机械和介电性能的影响。主要通过分析中红外吸收光谱获得的结果，已经清楚在所有条件下都形成了具有硅氧烷键的交联结构。这使得SiR变硬变脆，但也明显改善了介电性能。SiR 退化的早期阶段可以通过 EAB 和复电模量检测到，复电模量被定义为复介电常数的倒数。因此，EAB 和复电模量可用于监测 SiR 的老化状态。