News from Japan

Organic polymers are widely used as insulation and sheath materials for electric wires and cables. Materials like polyvinyl chloride (PVC), ethylene propylene diene rubber, and inorganic silicone rubber are commonly used for low-voltage cables. In low-voltage cables, mechanical properties are often prioritized over electrical insulation properties, influencing the choice of materials used. For instance, the volume resistivity of silicone rubber at room temperature is not so high, being in the order of TΩ·m [1].