An investigation of dynamic mechanical, thermal, and electrical properties of housing materials for outdoor polymeric insulators |
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| Authors: | M Ehsani H Borsi J Morshedian |
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| Institution: | a Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 149657-115, Tehran, Iran
b Institute of Electric Power Systems, Division of High Voltage Engineering, Schering Institute, University of Hannover, Callinstr. 25 A, D-30167 Hannover, Germany |
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| Abstract: | The present paper reports the results about a study of mechanical, thermal, dynamic mechanical and electrical properties of housing (weather shed) materials for outdoor polymeric insulators. Silicone rubber, ethylene-propylene-diene monomer (EPDM) and alloys of silicon-EPDM are known polymers for use as housing in high voltage insulators. The result of dynamical mechanical measurement shows that the storage modulus of blends enhances with increase EPDM in formulation. It can be seen from the result of TGA measurement that initial thermal degradation of silicone rubber improves by the effect of EPDM in blends. The blends of silicone-EPDM show good breakdown voltage strength compared to silicone rubber. Surface and volume resistance of silicone rubber improve by EPDM content. The mechanical properties of EPDM such as strength, modulus and elongation at break improve by silicone. |
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| Keywords: | Silicone rubber EPDM Dynamic mechanical thermal analysis Breakdown strength Initial decomposition temperature Thermo-gravimetrical analysis Surface and volume resistance |
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