ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)最新文献_第3页

A comparative study of partial discharge pattern evolution in polymers at room and cryogenic temperatures 室温和低温下聚合物局部放电模式演变的比较研究

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709253

M. B. Srinivas, A. Kojima, Y. Suzuoki, M. Nagao, M. Kosaki

引用次数: 0

DC electrical and mechanical characterisation of polypropylene film 聚丙烯薄膜的直流电气和机械特性

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709262

B. Sanden, E. Iidstad

引用次数: 6

Evaluation of space charge properties in polymers by using a scanning electron microscope 用扫描电子显微镜评价聚合物的空间电荷性质

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709219

D. Marsacq, P. Hourquebie, H. Janah

{"title":"Evaluation of space charge properties in polymers by using a scanning electron microscope","authors":"D. Marsacq, P. Hourquebie, H. Janah","doi":"10.1109/ICSD.1998.709219","DOIUrl":"https://doi.org/10.1109/ICSD.1998.709219","url":null,"abstract":"In order to try to improve dielectric properties of polymers, we have explored the space charge characteristics by using a scanning electron microscope (SEM). By controlling the conditions of charge injection close to the surface of the sample, it has been possible to evaluate on one hand the trapping ability of the material and on the other hand the corresponding detrapping potential. This latter parameter was connected to the space charge spreading during injection as seen by a decrease of the detrapping potential with increasing the size of the domain where the charges are injected. This size can be monitored by a careful control of the focalisation of the electron beam on the surface of the sample. Using this technic a same amount of charges can be injected into domains with different size. Moreover, the surface potential was found to be dependent on the structural parameters of the tested polymers such as branching ratio. To better characterize the space charge properties, the detrapping potential has been examined at different temperatures. These experiences have indicated that above a critical value a decrease of the sample temperature strongly affects the space charge spreading. Characterization of the evolution of the dielectric losses (tan/spl delta/) with the temperature showed that this critical temperature was close to the glass transition temperature of the sample. These results have suggested that the macromolecules motion plays a significant role in the space charge spreading.","PeriodicalId":13148,"journal":{"name":"ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)","volume":"28 1","pages":"28-31"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80346562","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

Effects of space charge and dipoles on dielectric relaxation of polyethylene and its ageing in humid environment 空间电荷和偶极子对潮湿环境下聚乙烯介电弛豫及其老化的影响

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709220

P. Scarpa, D. Das-Gupta

引用次数: 0

Insulating materials for super-conductors, their characteristics at cryogenic temperature 超导体用绝缘材料及其低温特性

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709300

E. Husain, M. M. Mohsin, S. Naqvi

{"title":"Insulating materials for super-conductors, their characteristics at cryogenic temperature","authors":"E. Husain, M. M. Mohsin, S. Naqvi","doi":"10.1109/ICSD.1998.709300","DOIUrl":"https://doi.org/10.1109/ICSD.1998.709300","url":null,"abstract":"Liquid nitrogen (LN/sub 2/) and cryogenic nitrogen (CGN/sub 2/) are found suitable not only as coolants but also as insulating materials for high critical temperature superconductors (HTSC). Experimental studies have been carried out to evaluate the dielectric strength of LN/sub 2/, under varying field conditions. Experiments were also performed with CGN/sub 2/ and solid insulting materials immersed in LN/sub 2/ using spherical electrodes. The breakdown strength of insulating materials has been found to increase significantly at cryogenic temperatures in comparison to atmospheric temperatures. The increase in breakdown strength of insulating materials like cotton tape, empire tape, Leatheroid paper, varnished paper, Presspahn, Bakelite sheet and mica is comparatively large with respect to materials like P.V.C., minimax and perspex. No apparent physical change was noticed in case of cotton tape, empire tape, Leatheroid paper, varnished paper, Presspahn, Bakelite sheet and mica, when immersed in LN/sub 2/ while minimax P.V.C. and perspex sheet got hardened and colour of rest pieces of these materials got faded till they remained immersed in LN/sub 2/.","PeriodicalId":13148,"journal":{"name":"ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)","volume":"4 1","pages":"361-364"},"PeriodicalIF":0.0,"publicationDate":"1998-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79902991","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: 3

Light emission and electrical tree initiation in highly stressed XLPE and the effect of DC prestressing 高应力交联聚乙烯的光发射、电树萌生及直流预应力的影响

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709278

A. Leighton, R.D. Naybour, L. Warren

引用次数: 1

Study of photovoltaic properties of conducting polymers 导电聚合物光伏性能的研究

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709307

Fengjun Wei, Wei Wei, Wu Hongcai

引用次数: 1

The properties of electrical conduction and photoconduction in polyphenylene sulfide by uniaxial elongation 用单轴延伸法研究聚苯硫醚的电导和光导特性

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709270

U. Lee, T. Shin, Y.G. Park, K. Lim, S.H. Kang, B. Ryu

引用次数: 0

Interface charge in polymer laminates 聚合物层压板中的界面电荷

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709226

M. Jeroense, M. Lindgren, A. Gustafsson, T. Schutte

引用次数: 8

Breakdown and space charge of LDPE films prepared using metallocene catalyst 茂金属催化剂制备LDPE薄膜的击穿与空间电荷

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI: 10.1109/ICSD.1998.709331

T. Mori, R. Ishii, C. Banmongkol, T. Mizutani, M. Ishioka

引用次数: 5