{"title":"Dielectric relaxation behaviour of electrically (AC) aged polyethylene in humid environment","authors":"P. Scarpa, A. Svatik, D. Das-Gupta","doi":"10.1109/ICPADM.1994.414116","DOIUrl":null,"url":null,"abstract":"The dielectric spectroscopy of the unaged and AC aged (6 kV/mm, 2.5 kHz, 0.1N NaCl, 69 hours) LDPE samples with three different experimental conditions (i.e., at room temperature, at room temperature after additional DC poling at 70/spl deg/C with 2 kV/mm for 1 hour followed by cooling down to room temperature in the presence of the field, and at 70/spl deg/C), are presented. It is shown that a parallel combination of the \"universal relaxation law\" and \"low frequency dispersion\" relaxation can account for the observed behaviour. The observed changes in the low frequency range (10/sup -5/Hz to 10/sup -2/Hz) appear to be most significant regarding the electrical ageing.<<ETX>>","PeriodicalId":331058,"journal":{"name":"Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1994-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 1994 4th International Conference on Properties and Applications of Dielectric Materials (ICPADM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPADM.1994.414116","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The dielectric spectroscopy of the unaged and AC aged (6 kV/mm, 2.5 kHz, 0.1N NaCl, 69 hours) LDPE samples with three different experimental conditions (i.e., at room temperature, at room temperature after additional DC poling at 70/spl deg/C with 2 kV/mm for 1 hour followed by cooling down to room temperature in the presence of the field, and at 70/spl deg/C), are presented. It is shown that a parallel combination of the "universal relaxation law" and "low frequency dispersion" relaxation can account for the observed behaviour. The observed changes in the low frequency range (10/sup -5/Hz to 10/sup -2/Hz) appear to be most significant regarding the electrical ageing.<>
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