INSULATING LAYER-COVERED ELECTRIC WIRE

摘要

The present invention provides a covered electric wire including an insulating layer made of a porous polytetrafluoroethylene membrane and having both good electrical properties and good mechanical properties. The present invention is a covered electric wire including a conductor wire and an insulating layer covering the conductor wire. This insulating layer is made of a porous polytetrafluoroethylene membrane showing an endothermic peak in a temperature range of 327° C. or higher and 335° C. or lower but not showing an endothermic peak in a temperature range of higher than 335° C. and 380° C. or lower, as measured by differential scanning calorimetry at a heating rate of 10° C./min.

主权项

1. A covered electric wire comprising:
a conductor wire; and an insulating layer covering the conductor wire, the insulating layer being made of a porous polytetrafluoroethylene membrane showing an endothermic peak in a temperature range of 327° C. or higher and 335° C. or lower but not showing an endothermic peak in a temperature range of higher than 335° C. and 380° C. or lower, as measured by differential scanning calorimetry at a heating rate of 10° C./min.