CONDUCTIVE COMPOSITION, CONDUCTIVE COMPOSITION SHEET AND ORGANIC POSITIVE TEMPERATURE COEFFICIENT THERMISTOR ELEMENT USING THEM AS WELL AS METHOD FOR MANUFACTURING ORGANIC POSITIVE TEMPERATURE COEFFICIENT THERMISTOR ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide an organic positive temperature coefficient thermistor which exhibits a small resistance value at room temperature but exhibits a high increasing rate of resistance value in a high-resistance state, whose resistance value at room temperature does not increase, and by which no abnormal phenomenon such as ignition occurs even when its high-resistance state is repeated.;SOLUTION: Conductive powder and boron nitride powder are dispersed in an organic polymer to form a conductive composition. In this case, the boron nitride powder is contained in the conductive composition at the rate of 1-20% by volume with respect to the total volume. The formed conductive composition is processed into a sheet, and is provided with at least a pair of electrodes on both sides. It is irradiated with a predetermined amount of electron beam or γ beam to obtain the organic positive temperature coefficient thermistor.;COPYRIGHT: (C)2007,JPO&INPIT