The nature of AC field aging of cross-linked polyethylene (XLPE) using NaCl and CuSO/sub 4/ (0.1 M) electrodes was studied with Fourier transform infrared absorption (FTIR), thermally stimulated discharge current (TSDC), and thermal transient current (TTC) measurements. FTIR measurements show that oxidation of stabilized XLPE is significantly lower than that of the unstabilized materials. No noticeable increase in bound water content in the polymer was observed as measured by IR absorbance at 3370 cm/sup -1/. Progressive enhancements of absorbance at approximately 1715 cm/sup -1/ and the TSDC peak at 70 degrees C with increasing field aging time appear to have the same origin. Thermal transient current magnitude is related to that of the integrated charge released in a TSDC thermogram.
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机译：利用傅立叶变换红外吸收（FTIR），热激发放电电流（TSDC）和热瞬态电流研究了使用NaCl和CuSO / sub 4 /（0.1 M）电极的交联聚乙烯（XLPE）的交流场老化性质（TTC）测量。 FTIR测量表明，稳定的XLPE的氧化显着低于未稳定的材料的氧化。通过3370cm / sup -1处的IR吸光度测量，未观察到聚合物中结合水含量的明显增加。随着田间老化时间的增加，吸光度在大约1715 cm / sup -1 /处逐渐增强，TSDC在70摄氏度达到峰值。热瞬态电流的大小与TSDC热分析图中释放的积分电荷的大小有关。
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