High voltage insulation materials based on functional polymer nanocomposites – compounding, structure, stability

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Project abstract

The objective of this Post doc project was to develop and characterize new types of resistive field grading materials for use in HVDC cable accessories, in order to allow more compact and reliable designs. Within the frame of this project a custom-built resistivity setup for high voltages was built and verified. The non-linear conductivity of polymer composites, filled with low amount of surface-modified, thermally reduced graphene oxide, was then assessed in collaboration with Martin Wåhlander (Ph.D. student, ML1: "High Voltage Insulation Materials Based on Functional Polymer Nanocomposites – Synthesis of nanocomposite master Batches"). It was found that the non-linear conductivity could be controlled by suitable surface modification via polymer grafting or silanization.

Summary of work

2016. The construction of the laboratory measurement set-up for insulation resistance and polarization/de-polarization testing was completed in Q3. This permits measurements of leakage currents, polarization effects and influence of chemicals, humidity and temperature on insulating materials as well as field grading materials. The set-up is currently used by several students in parallel projects within SweGRIDS.

2016. Accelerated aging experiments on field grading materials based on reduced graphene oxide in smaller scales has shown promising results and is planned to be upscaled for testing on larger and more realistic scales.

Event log

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Project reference-group

Professor Ulf W. Gedde,  KTH Fibre and Polymer Technology
Adjunct Prof. Henrik Hillborg,  ABB Cooperate Research
Assoc. Prof. Richard Olsson,  KTH Fibre and Polymer Technology

Publications by this researcher

See alternatively the researcher's full DiVA list of publications, with options for sorting.
Publications in journals and conferences usually will not show until a while after they are published.

Tailoring Dielectric Properties using Designed Polymer-Grafted ZnO Nanoparticles in Silicone Rubber
Martin Wåhlander,   Fritjof Nilsson,   Richard L. Andersson,   Carmen Cobo Sanchez,   Nathaniel Taylor,   Anna Carlmark,   Henrik Hillborg,   Eva Malmström.
2017,   Journal of Materials Chemistry A, vol. 5

Reduced and Surface-Modified Graphene Oxide with Nonlinear Resistivity
Martin Wåhlander,   Fritjof Nilsson,   Richard L. Andersson,   Anna Carlmark,   Henrik Hillborg,   Eva Malmström.
2017,   Macromolecular rapid communications, vol. 38(16)

Experimental review : chemical reduction of graphene oxide (GO) to reduced graphene oxide (rGO) by aqueous chemistry
Leonard Gaston Guex,   B. Sacchi,   Kevin F. Peuvot,   Richard L. Andersson,   Amir Masoud Pourrahimi,   Valter Ström,   S. Farris,   Richard T. Olsson.
2017,   Nanoscale, vol. 9(27)

Bioinspired Layer-by-Layer Microcapsules Based on Cellulose Nanofibers with Switchable Permeability
Thomas Paulraj,   Anastasia V. Riazanova,   Kun Yao,   Richard L. Andersson,   Anette Mullertz,   Anna J. Svagan.
2017,   Biomacromolecules, vol. 18(4)

Conductive biofoams of wheat gluten containing carbon nanotubes, carbon black or reduced graphene oxide
Qiong Wu,   Henrik Sundborg,   Richard L. Andersson,   Kevin Peuvot,   Leonard Guex,   Fritjof Nilsson,   Mikael S. Hedenqvist,   Richard T. Olsson.
2017,   RSC Advances, vol. 7(30)

Publication list last updated from DiVA on 2024-01-10 15:22.

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Last generated: 2024-01-10