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Insulated electric wire, electric device, and process for production of insulated electric wire

A technology of insulated wires and insulation skins, which is applied in the direction of insulated cables, cable/conductor manufacturing, winding insulation shape/style/structure, etc. It can solve the problems of poor wear resistance of insulated wires and easy damage to the insulation film, and achieve high Excellent insulation breakdown voltage, excellent life characteristics, and excellent wear resistance

Active Publication Date: 2012-12-26
ESSEX FURUKAWA MAGNET WIRE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, depending on the situation, the wear resistance of the insulated wire is poor, and the insulating film is easily damaged.

Method used

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  • Insulated electric wire, electric device, and process for production of insulated electric wire
  • Insulated electric wire, electric device, and process for production of insulated electric wire
  • Insulated electric wire, electric device, and process for production of insulated electric wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062]

[0063] 1600 g of NMP (2-methylpyrrolidone) was added to a 2 L separable flask, and 400 g of pellets of polyetherimide resin (PEI) which is a thermoplastic resin were added in small portions. This was heated to 110° C. and stirred for 5 hours to obtain a transparent yellow 20% by mass thermoplastic resin varnish. 139 g of a thermosetting resin varnish was added to this thermoplastic resin varnish to prepare a resin varnish containing a thermoplastic resin and a thermosetting resin. Among them, HI406 (a polyamide-imide (PAI) solution having a resin component of 32% by mass) (trade name, manufactured by Hitachi Chemical Co., Ltd.) was used as the thermosetting resin varnish.

[0064]

[0065] The above-mentioned resin varnish (PAI:PEI=10:90) containing thermoplastic resin and thermosetting resin was coated on the outer periphery of a copper wire with a diameter of 1 mm, and fired at 520°C to obtain an electric wire with a film thickness of 40 μm on the outer peripher...

Embodiment 2

[0067] In Example 1, except having made the quantity of the thermosetting resin varnish to add into 1250g, it carried out similarly to Example 1, and prepared the resin varnish. Using the obtained resin varnish (the compounding ratio of PAI and PEI is PAI:PEI=50:50), obtain in the same manner as in Example 1 figure 2 (a) The insulated wire of Example 2 shown.

Embodiment 3

[0069] In Example 1, except having made the quantity of the thermosetting resin varnish to add into 11250g, it carried out similarly to Example 1, and prepared the resin varnish. Using the obtained resin varnish (the compounding ratio of PAI and PEI is PAI:PEI=90:10), obtain in the same manner as in Example 1 figure 2 (a) The insulated wire of Example 3 shown.

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Abstract

An insulated electric wire which comprises a conductive material and an insulating coating film that covers the outer periphery of the conductive material, wherein the insulating coating film comprises a cured product of a thermosetting resin composition comprising a thermoplastic resin and has very small air holes.

Description

technical field [0001] This invention relates to insulated wires used in various electrical equipment. The present invention also relates to electric equipment such as electric motors and transformers using insulated electric wires. The invention further relates to a method of manufacturing an insulated wire. Background technique [0002] Conventionally, insulated wires in which conductors are covered with an insulating film have been used in electrical coils for various electrical equipment such as motors and transformers. Adhesion to conductors, electrical insulation, and heat resistance are required for the insulating film of the insulated wire forming the electric coil. In particular, in recent years, electrical equipment for space, aircraft, nuclear power, energy, and automobiles has been required to be smaller and lighter, and at the same time, to increase performance. For example, in rotating electric machines such as motors and transformers, higher output power is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B13/00H01B13/16H01F5/06H02K3/30
CPCH01B7/0233H01B3/305H01B3/306H02K3/40H01B3/30H02K3/30H01B3/303H01B7/29
Inventor 大矢真武藤大介小久保阳介田中彰
Owner ESSEX FURUKAWA MAGNET WIRE LLC
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