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Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986最新文献

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Dynamic mechanical spectroscopy and aging in high molecular weight and crosslinked polyethylene cable insulation 动态力学光谱和老化在高分子量和交联聚乙烯电缆绝缘中的应用
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726467
A. Lustiger, M. Epstein
{"title":"Dynamic mechanical spectroscopy and aging in high molecular weight and crosslinked polyethylene cable insulation","authors":"A. Lustiger, M. Epstein","doi":"10.1109/CEIDP.1986.7726467","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726467","url":null,"abstract":"Considerations of the ordered, or crystalline, domains have long dominated research to characterize and explain the properties of polyethylene. This perspective has naturally influenced conceptions about the material, the nomenclature used to describe it, and the techniques used to measure its properties.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127182383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Submillimetric study of a poly (vinylidene fluoride-trifluorethylene) copolymer under electrical and mechanical stresses 在电和机械应力下聚偏氟乙烯-三氟乙烯共聚物的亚毫米研究
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726466
M. Latour, R. L. Moreira
{"title":"Submillimetric study of a poly (vinylidene fluoride-trifluorethylene) copolymer under electrical and mechanical stresses","authors":"M. Latour, R. L. Moreira","doi":"10.1109/CEIDP.1986.7726466","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726466","url":null,"abstract":"The infrared spectra of Poly (vinylidene fluoride) (PVDF) and copolymers in its different crystalline forms have been well explained in the frequency range 50 to 4000 cm\"1 [1/2]. Nevertheless, the submillimetric region (10 to 50 cm−1) remains yet practically unexplored. In this region polymeric structures show broad absorption bands and rather poor polarization compared to single crystal structures. The absorption comes typically from intermolecular torsional modes, intermolecular motions in both amorphous and crystalline regions and relaxation processes from defects associated with the amorphous phase [3]. A few studies have been carried out but the interpretation of the spectra was rather delicate [4,5]. Frequently, apparent losses due to diffraction in the sample masks the true polymer absorption. In a previous paper we have described a theoretical model that allowed us to calculate the submillimetric absorption [6].","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131411575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
G.I.S. disconnectors: A physical model for ground faulting g.i.s分离器:地面断层的物理模型
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726501
S. Rowe
{"title":"G.I.S. disconnectors: A physical model for ground faulting","authors":"S. Rowe","doi":"10.1109/CEIDP.1986.7726501","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726501","url":null,"abstract":"During the past few years a great deal of attention has been paid to the phenomena linked to the operation of metal clad-disconnectors. These phenomena give rise to problems linked either to the integrity of the disconnector itself [1-3] or to the rest of the G.I.S. In this paper we are concerned only with the former.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134503554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measuring the electrical properties of thin insulating films in contact with electrolyte solutions 测量与电解质溶液接触的薄绝缘薄膜的电性能
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726427
D. Taylor, A. G. Macdonald
{"title":"Measuring the electrical properties of thin insulating films in contact with electrolyte solutions","authors":"D. Taylor, A. G. Macdonald","doi":"10.1109/CEIDP.1986.7726427","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726427","url":null,"abstract":"The electrical properties of insulating films on metal electrodes placed in electrolyte solutions are of particular interest because novel electroactive polymers such as polypyrrole are being prepared by electropolymerisation in electrolytic cells. By measuring the electrical characteristics of the layer in situ, it is possible to monitor its quality during deposition[1]. In addition, a considerable effort is being expended on methods for coating electrodes and semiconductor devices with suitable materials in order to form sensors [2] and systems capable of selective electrocatalysis [3].","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128570422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Pre-breakdown currents in polyimide films 聚酰亚胺薄膜的预击穿电流
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726499
M. Ieda, T. Mizutani, M. Hikita, I. Kanno, G. Sawa
{"title":"Pre-breakdown currents in polyimide films","authors":"M. Ieda, T. Mizutani, M. Hikita, I. Kanno, G. Sawa","doi":"10.1109/CEIDP.1986.7726499","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726499","url":null,"abstract":"The electrical breakdown processes in synthetic polymers have been actively investigated these decades. However, their details have not yet been fully understood. Recently, the authors have developped a system for measuring a pre-breakdown current and tried to clarify the mechanism of a breakdown from pre-breakdown currents in polymeric insulators [1-4]. In the previous paper [2], we found that a pre-breakdown current in polyimide (PI) started to increase rapidly around 10−3 s just before a breakdown at 90 C and explained it in terms of the thermal breakdown.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123689409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Charge motion on moist polymer surfaces 潮湿聚合物表面上的电荷运动
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726428
D. Das-Gupta, K. Doughty, A. Goodings
{"title":"Charge motion on moist polymer surfaces","authors":"D. Das-Gupta, K. Doughty, A. Goodings","doi":"10.1109/CEIDP.1986.7726428","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726428","url":null,"abstract":"Solid polymeric insulation materials such as low density polyethylene (LDPE) and cross linked polyethylene (XLPE) are employed in high voltage situations and in sensitive current measuring apparatus because of their very high resistivities. However, a consequence of these insulation properties is that charges, once deposited onto a surface, may remain there for a very long time and give rise to spurious surface potentials. Indeed the decay of surface charge may be so slow that it is often impossible to determine whether conduction occured through the bulk or along the surface.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124990836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Water-tree growth in styrenic dielectrics 苯乙烯介质中的水树生长
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726476
S. Shaw, B. Durairaj, M. Shaw
{"title":"Water-tree growth in styrenic dielectrics","authors":"S. Shaw, B. Durairaj, M. Shaw","doi":"10.1109/CEIDP.1986.7726476","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726476","url":null,"abstract":"While water trees have been of most concern to the users and suppliers of high voltage underground cable, the phenomenon can be expected to occur in any polymeric dielectric exposed to a sufficiently high electrical stress in the presence of moisture. Water trees have been reported in number of materials including polyvinyl chloride), epoxy, polycarbonate, polystyrene and silicone rubber(1). As this list illustrates, water trees can occur in a variety of materials with large differences in chemical constitution, super-molecular structure, and physical state.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125275958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Giant, nomadic polarization 巨大的，游牧的极化
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726426
H. A. Pohl, D. Pohl, J. K. Pollock
{"title":"Giant, nomadic polarization","authors":"H. A. Pohl, D. Pohl, J. K. Pollock","doi":"10.1109/CEIDP.1986.7726426","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726426","url":null,"abstract":"The recently discovered molecular mode of polarization, nomadic polarization, can provide giant electrical responses as it operates. It now remains to study the phenomenon thoroughly in various molecular realizations to see if it can provide materials with advantageous electrical properties. The evidence to date suggests that it does. Certain polymeric organic solids, containing extended domains of delocalized electronic molecular orbitals, prove to be prime examples. Such materials have been molecularly designed along these lines to show very high dielectric constants (superdielectrics), to have usefully low dielectric loss, excellent chemical and thermal stability, or to have very high piezo-resistance or piezo-polarization responses. The theory for it is in good agreement with observation.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134051782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Induced loss of optical fibers exposed to nuclear reactor thermal neutrons 暴露在核反应堆热中子中的光纤的诱导损耗
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726471
S. Karasawa, Y. Hatori, T. Takada, T. Sakai, K. Shibuya
{"title":"Induced loss of optical fibers exposed to nuclear reactor thermal neutrons","authors":"S. Karasawa, Y. Hatori, T. Takada, T. Sakai, K. Shibuya","doi":"10.1109/CEIDP.1986.7726471","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726471","url":null,"abstract":"The base material currently used for optical fiber waveguides (optical fibers) is silica. By adding various impurities, properties required for optical transmissions are created. When these optical fibers are used in a particular environment, such as a nuclear reactor, damage caused by radiation from the source becomes a serious problem. It is well-established that when optical fibers are exposed to 60Co γ-rays, the attenuation of the signal through the fiber decreases (1–3). This is due to damage produced in the fiber by radiation. The nuclear reactor radiates not only γ-rays, but also thermal neutrons. However, the effect of the thermal neutron on optical fibers has not been established.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129419270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pulsed electro-acoustic measurement of volume charge accumulation and decay in polyethylene 脉冲电声测量聚乙烯中体积电荷积累和衰减
Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986 Pub Date : 1986-11-01 DOI: 10.1109/CEIDP.1986.7726481
C. Cooke, K. Wright, T. Maeno, H. Kushibe, T. Takada
{"title":"Pulsed electro-acoustic measurement of volume charge accumulation and decay in polyethylene","authors":"C. Cooke, K. Wright, T. Maeno, H. Kushibe, T. Takada","doi":"10.1109/CEIDP.1986.7726481","DOIUrl":"https://doi.org/10.1109/CEIDP.1986.7726481","url":null,"abstract":"The measurement of volume charges within solid insulators provides needed information important to the evaluation of dielectric performance and the modelling of breakdown processes. Furthemore, electrical insulation such as polyethylene can be crosslinked with penetrating electron irradiation and thus be exposed to charge injection. While polyethylene is a widely used dielectric material, especially in cables, there is little direct information about its charge retention capabilities or the magnitude and distribution of residual charges which accumulate during the radiation process. Some studies of space charges in PE have employed electro-optic methods,[1] but they required the PE to be heated to softening temperatures so as to make it sufficiently transparent for the optical measurement. In this study, the pulsed electro-acoustic method [2,3] was used on samples at room temperature and below to non-destructively determine and monitor the volume charges in PE.","PeriodicalId":354533,"journal":{"name":"Conference on Electrical Insulation & Dielectric Phenomena — Annual Report 1986","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114656885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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