Polymer conductive composite material and PTC element

摘要

A polymer-based conductive composite material and a PTC element, wherein the polymer-based conductive composite material is a polymer substrate having a volume fraction of 20% to 75%; a core-shell having a volume fraction of 25% to 80% A conductive filler having a particle structure and dispersed in the polymer substrate; a titanate coupling agent, comprising a coupling agent occupying 0% to 5% of the volume of the conductive filler . The PTC element manufactured using the polymer-based conductive composite material includes at least two metal electrode sheets (12, 12 ′), the polymer-based conductive composite material (11), and the metal electrode sheet. (12, 12 ') are tightly coupled. The PTC element manufactured by the polymer conductive composite material has low room temperature resistivity, excellent weather resistance, good withstand voltage performance, and resistance reproducibility. [Selection] Figure 1