| 摘要 |
A positive temperature coefficient superimposed impedance polymeric compound comprises an electrically insulating matrix consisting of an amorphous polymer, and first and second electrically conductive particles having different surface energies and electrical conductivities dispersed in it so that the compound becomes a conductive composite body. Independent claims are included for the following: (1) a multi-layered, zero-positive-zero temperature coefficient foil comprising a composite body (3) present between first and second planar metal foils (1, 2), where the composite body is positive temperature coefficient superimposed impedance polymeric compound including an electrically insulating matrix, consisting of an amorphous polymer, and first and second electrically conductive particles dispersed in it, where the composite body thereby forms a conductive network extending from the first metal foil to the second metal foil, the first and second electrically conductive particles have different surface energies and electrical conductivities; and (2) a multi-layered device comprising two-dimensional composite body having a first surface and a second surface opposite to the first surface, and including an electrically insulating matrix consisting of a polymer containing electrically conductive particles dispersed in the matrix, where the matrix consists of an elastomeric amorphous polymer containing first and second electrically conductive particles, the composite body thereby forms a conductive network extending from the first surface to the opposite second surface of the composite body, the first and second electrically conducting particles have different surface energies and electrical conductivitities, an electrode layer adheres to each of the surfaces of the composite body, where each of the electrode layers consist of metal foils prepared for connection to electrodes carrying electrical current through the composite body in a direction perpendicular to the electrode layers. |
