| 摘要 |
PROBLEM TO BE SOLVED: To provide an insulated wire capable of further improving heat resistance of an insulator using a crystalline resin.SOLUTION: An insulated wire 1 has a conductor 2, and an insulator 3 containing a crystalline resin which is extruded to the outer periphery of the conductor 2 and is coated. In the outside face of the insulator 3, a peak intensity ratio Ap1/As1 measured by a single reflection polarization ATR method in which the vertical light of infrared light is made incident at 45° using a diamond prism is set at 1±0.2. The Ap1 is peak intensity caused by the orientation of the crystalline resin to an extrusion direction in the parallel absorption spectrum at the outside face of the insulator 3 measured in such a manner that the electric field direction in vertical polarization and the extrusion direction of the insulator 3 are made incident. The As1 is peak intensity caused by the orientation of the crystalline resin to the extrusion direction in the vertical absorption spectrum in the outside face of the insulator 3 measured in such a manner that the electric field direction in the vertical polarization and the extrusion direction are made 90°.SELECTED DRAWING: Figure 1 |
