Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: Poster Session I
CPP 20.28: Poster
Montag, 12. März 2018, 17:30–19:30, Poster A
Development of a self-healing silicone rubber for high-voltage cable accessories — •Lena Barnefske1, Andreas Petersen2, Gerd Heidmann2, and Heinz Sturm1 — 1Bundesanstalt für Materialforschung und -prüfung, Berlin, Germany — 2Institut Prüffeld für elektrische Hochleistungstechnik GmbH, Berlin, Germany
Self-healing materials are modified materials which respond on a damage phenomenon by using a damage management, called self-healing. In the scope of this research it is important that such materials are developed for a specific damage phenomenon as well as on a specific application. One of the biggest problems in high-voltage silicone rubber insulation cable accessories is the damage on electrical treeing, initiated by partial discharges. This damage leads at one point to a breakdown of the insulation. Furthermore, these cable accessories are often difficult to access. This aspects open up a question whether novel and promising self-healing materials might be a solution to this problem.
Our research focuses on a highly homogeneous material design, which is composed by a silicone rubber matrix with polydimethylsiloxane-polyorganosilioxane filler particles. Particles are able to release polydimethylsiloxane after destruction for healing. With our contribution we would like to present first results on the characterization on the damage mode induced by electrical treeing under high-voltage with scanning electron microscopy to define parameters for further developments on the material.