POLYMER PTC COMPOSITION, LAYERED POLYMER PTC ELEMENT, POLYMER PTC ELEMENT, PTC DEVICE, ELECTRICAL APPARATUS, AND SECONDARY BATTERY CELL

摘要

To provide a polymer PTC composition having low electric resistivity even with a small amount of conductive filler.SOLUTION: The polymer PTC composition includes a melt-formable polyvinyl alcohol resin and a conductive filler. A content of the conductive filler is 75% by mass or less. The polyvinyl alcohol resin is an ethylene-vinyl alcohol copolymer resin. The conductive filler is at least one selected from a group consisting of amorphous carbon, metal, metal oxide, metal carbide, metal boride, metal nitride, and metal silicide.SELECTED DRAWING: None