And a method of manufacturing the material temperature coefficient of electrical resistance indicates a positive

摘要

PROBLEM TO BE SOLVED: To provide a PTC material allowing use at a high temperature besides having little deterioration as compared with a plastic PTC (temperature coefficient of resistance is positive) material and a manufacturing method thereof. ;SOLUTION: Conductive particles are dispersed at a rate of 10 to 70 volume % in an inorganic-organic hybrid, in which a skeleton of an inorganic polymer consisting of an M-O-M bonding (M denotes a metal, a semimetal atom) is substituted with an Si(R)_a(O-)_4-a group (R denotes an alkyl group, n=1 to 3). The conductive particles are metal, carbon, oxide particles having a size in the range of 0.1 to 100μm. A kind or two kinds or more of the above conductive particles are dispersed in a solution, in which alkoxide, and one kind or two kinds or more of alkyl alkoxide silane terminal silanol polydimethyl siloxanes are subjected to hydrosis for being manufactured. Or, after one kind or two kinds or more of the above conductive particles are dispersed in a solution, in which one kind or two kinds of alkoxide, and alkylalkoxi silane terminal silanol polydimethyl siloxane are dissolved, hydrosis, aging and gelling are performed for manufacturing the purposed material.;COPYRIGHT: (C)1997,JPO