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Tutorial

TUTORIAL ON ELECTRICAL PROPERTIES  OF INSULATING POLYMERS

June 30, 2013  h 14-18

Final Program 

Part 1:  Why and How Do Polymeric Dielectrics Conduct

Leonard A. Dissado

Dielectric materials are not supposed to conduct and many of their applications are predicated on this supposition. In reality however, they do conduct and with a field dependent conductivity. This fact limits their ability to function at high fields.  This tutorial will address the behaviour of polymeric insulating materials where the processes involved in transient and steady state conduction are still only poorly understood. The possible origins of the charge carriers required for electrical conduction will be discussed. Processes proposed for field dependent injection and carrier transport will be described and evaluated in terms of experimental data. The role played by space charge in determining conduction characteristics will be outlined through reference to theory and experiment and the transient charge packet phenomenon described. Finally a summary of the present state-of-the-art will be given.

 
Part 2:  Nanodielectrics

John C. Fothergill

The talk will give a brief review of nano-dielectrics and will show how the inclusion of nano-particles in polymer hosts may influence and possibly improve various properties related to electrical insulation.  The talk will illustrate this in more detail by considering the dielectric response and other dielectric and physical characteristics of cross-linked polyethylene that has had both chemical and nano-particles additives with different surface functionalizations.  Using such techniques it is possible to speculate on the mechanisms governing the electrical behaviour of such materials, which may be useful, for example, in high voltage DC cables. 

This tutorial is addressed particularly to students (special reduced rate are applied).

Tutorial fees

Type Before May 15th After May 15th
 
IEEE Members 60 EUR 75 EUR
Non-Members 75 EUR 90 EUR
IEEE Student Members (retired people) 25 EUR 40 EUR
Students / retired (Non-Members) 40 EUR 60 EUR

 

Tutorial registration can be done at the same time of Conference Registration in the website (www.conftool.com/icsd2013).

 

Leonard A Dissado: Fellow IEEE from January 2006 Born: St.Helens,Lancashire, U.K 29 August 1942  Educated: Thomas Linacre Technical School, Wigan, Lancashire, 1953-1960, gaining a State Scholarship for University Entry in 1959. Graduated from University College London with a 1st Class degree in Chemistry in 1963 and was awarded a PhD in Theoretical Chemistry in 1966 and a DSc in 1990. After rotating between Australia and England twice he settled in at Chelsea College in 1977 to carry out research into dielectrics. His interest in breakdown and associated topics started with a consultancy with STL begun in 1981. Since then he has published many papers and one book, together with John Fothergill, in this area. In 1995 he moved to The University of Leicester, and was promoted to Professor in 1998, and is now Professor Emeritus. He has been a visiting Professor at The University Pierre and Marie Curie in Paris, Paul Sabatier University in Toulouse, Nagoya University, and NIST at Boulder Colorado. He has given numerous invited lectures, including the E. O. Forster (ICSD 2001) and the Whitehead memorial lecture (CEIDP 2002). Currently he is an Associate Editor of IEEE Transactions DEI and Chairman of the DEIS Publications Committee. He was awarded the degree Doctuer Honoris Causa by the Universite Paul Sabatier, Toulouse in October 2007, and a Honorary Professorship of Xian Jiaotong University, China, in 2008, where he gives a masters course on ‘The physics of insulating polymers’ each autumn.

John C. Fothergill (SM'95, F'04) was born in Malta in 1953.  He graduated from the University of Wales, Bangor, in 1975 with a Batchelor’s degree in Electronics.  He continued at the same institution, working with Pethig and Lewis, gaining a Master’s degree in Electrical Materials and Devices in 1976 and doctorate in the Electronic Properties of Biopolymers in 1979. He first met Len Dissado at the dielectrics conference in this year where he gravitated to the noisiest part of the bar on being told that was Dissado and Hill discussing science.  Following this he worked as a senior research engineer leading research in electrical power cables at STL, Harlow, UK, where in an interesting role reversal he became line manager for Dissado’s work as a consultant.  In 1984 he moved to the University of Leicester as a lecturer. Between 1988 and 1992 he wrote the book ‘Electrical Degradation and Breakdown’ with Len Dissado. They discussed running ICSD’95 in Leicester on the plane back from Italy in 1992, and in 1995 he recruited Len Dissado as reader in the department.  After gaining a personal chair in Engineering and being Head of the Department of Engineering there, in 2012 he moved to City University London to become Pro Vice-Chancellor (Research and Enterprise).

 

Len Dissado and John Fothergill