| 摘要 |
PROBLEM TO BE SOLVED: To provide an insulated wire in which the oil resistance of an insulator can be improved compared with the conventional one.SOLUTION: Provided is an insulated wire 1 comprising: a conductor 2; and an insulator 3 including a crystalline resin extrusion-covered to the outer circumference of the conductor. In the outside face of the insulator 3, peak intensity ratio Ap/Asmeasured by a single reflection polarization ATR method in which the vertical light of infrared light is made incident at an incident angle of 45° using a diamond prism is higher than 1. The Apdenotes the 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 are made incident. The Asdenotes the 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 are made 90°. |
