**Electron Beam Irradiation Effects on Dielectric Parameters of SiR–EPDM Blends**

R. Deepalaxmi, V. Rajini and C. Vaithilingam

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/62624

#### **Abstract**

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The survival of an electrical system is mostly governed by the endurance limit of the dielectric material employed in it. The five different compositions of SiR–EPDM blends were prepared. Electron beam radiation has been widely used in the cable manufactur‐ ing industries in order to increase the life of the cable. Hence, the five blends were irradiated to 5, 15 and 25 Mrad dose levels by electron beam accelerator. The dielectric parameters such as breakdown voltage (BDV), dielectric strength (DS), dielectric constant (DC), and dissipation factor (DF) were measured as per ASTM/IEC standards. This chapter evaluates the effect of electron beam irradiation on dielectric parameters of SiR–EPDM blends.

**Keywords:** silicone rubber (SiR), ethylene propylene diene monomer (EPDM), break‐ down voltage (BDV), dielectric strength (DS), dielectric constant (DC), dissipation fac‐ tor (DF), electron beam irradiation
