{"title":"电老化聚乙烯在潮湿环境中的介电弛豫行为","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":"{\"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}","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}
Dielectric relaxation behaviour of electrically (AC) aged polyethylene in humid environment
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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