POSITIVE TEMPERATURE COEFFICIENT (PTC) POLYMER COMPOSITION AND RESETTABLE PROTECTOR COMPOSED OF THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a PTC (positive temperature coefficient) polymer composition with improved volt-ohm. SOLUTION: The PTC (positive temperature coefficient) polymer composition contains a mixture of a polymer, electroconductive particles and a volt-ohm improving agent of granular metal oxide to elevate volt-ohm of the composition. The polymer mixture is composed of a crystalline graft polymer and a crystalline nongraft polymer. COPYRIGHT: (C)2005,JPO&NCIPI