PURPOSE: To provide a semiconductive composition material with excellent characteristics, excellent heat resistance in particular.
CONSTITUTION: A polymer (EVA-PVC) grafted with vinyl chloride to an ethylene vinyl acetate copolymer and an ethylene vinyl acetate copolymer (EVA) are combined at the blend ratio 90/10-20/80. In a semiconductive composition material combined with a blend composition material 100 pts.wt. added with an adequate quantity of a conductivity imparting agent to the above combination and calcium aluminate or calcium silicate 0.5-20 pts.wt., excellent heat resistance is provided by the calcium aluminate or calcium silicate.
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