Anisotropic properties of graphene nanocomposites for high voltage insulation

Reference number 2018-03304
Coordinator CHALMERS TEKNISKA HÖGSKOLA AKTIEBOLAG - Avdelningen för Elteknik
Funding from Vinnova SEK 300 000
Project duration December 2018 - May 2019
Status Ongoing
Venture The strategic innovation programme for graphene
Call SIO Grafen: Samverkan för kommersiella tillämpningar med grafen - hösten 2018

Purpose and goal

Objective: Understand the anisotropic electric field grading properties of graphene composite materials based on silicone rubber matrix. Goals: 1. Develop a measurement method to study the anisotropic electric field grading properties of rubber sheets; 2. Test and Benchmark the anisotropic properties of exfoliated graphite and thermally reduced graphene oxide in a silicone rubber matrix against a commercially utilized material (Zinc oxide-filled composite); 3. Analyze and understand the measurement results and material properties via finite-element calculations.

Expected results and effects

Results of this project will help in understanding the anisotropic electric properties of the graphene composites. In addition, development of testing methods for materials’ anisotropic property characterization will be addressed. These material parameters and testing methods are the basis in modern HVDC bushing design. Design, prototyping and testing of new types of HVDC bushings with graphene composites as field grading materials are foreseen. This study will provide a solid foundation in future application of graphene composites in power apparatuses.

Planned approach and implementation

AP1: Dec. 2018 and Feb. 2019; materials development and sample preparation and SEM characterization; AP2: Dec. 2018; in-plane measurement technique development; AP3: Jan. 2019 and March 2019; electrical characterization; AP4: March and April 2019, materials calculation; AP5: May 2019, reporting and publication.

The project description has been provided by the project members themselves and the text has not been examined by our editors.