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Insulating paint and insulated wire using same

A technology of insulating coatings and coatings, which is applied to insulated cables, insulators, insulated conductors, etc., and can solve problems such as deterioration and damage of insulating coatings.

Active Publication Date: 2011-11-30
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the inverter surge voltage enters the electrical equipment as described above, partial discharge may occur on the insulated wires constituting the coil of the electrical equipment due to the inverter surge voltage, and the insulation coating may deteriorate or be damaged.

Method used

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  • Insulating paint and insulated wire using same
  • Insulating paint and insulated wire using same
  • Insulating paint and insulated wire using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] With respect to 100 mass parts of resin components of polyamide-imide resin paint A, make the silicon dioxide component of silica microparticle sol be 10 mass parts, make silica microparticle sol (dispersion medium: γ-butylene sol) in such a ratio Lactone, the average particle diameter of silica particles is 12nm, γ-butyrolactone: silica = 90:30 (mass ratio)) are dispersed in polyamide-imide resin coating A which is being stirred, thereby obtaining insulation coating. Next, this insulating paint was repeatedly applied and baked on a copper conductor having a conductor diameter of 0.80 mm so that the film thickness became 0.045 mm, thereby obtaining the insulated wire of Example 1.

Embodiment 2

[0089] With respect to 100 mass parts of resin components of polyamide-imide resin paint A, make the silica component of silica microparticle sol be 90 mass parts, make silica microparticle sol (dispersion medium: γ-butylene sol) in such a ratio Lactone, the average particle diameter of silica particles is 12nm, γ-butyrolactone: silica = 90:30 (mass ratio)) are dispersed in polyamide-imide resin coating A which is being stirred, thereby obtaining insulation coating. Next, this insulating paint was repeatedly applied and baked on a copper conductor having a conductor diameter of 0.80 mm so that the film thickness became 0.045 mm, thereby obtaining the insulated wire of Example 2.

Embodiment 3

[0091] With respect to 100 parts by mass of the resin component of the polyamide-imide resin coating B, the silica component of the silica microparticle sol was 10 mass parts, and the silica microparticle sol (dispersion medium: γ-butane Lactone, the average particle diameter of silica particles is 12nm, γ-butyrolactone: silica = 90:30 (mass ratio)) are dispersed in the polyamideimide resin coating B which is being stirred, thereby obtaining insulating coating. Next, this insulating paint was repeatedly applied and baked on a copper conductor having a conductor diameter of 0.80 mm so as to have a film thickness of 0.045 mm, whereby an insulated wire of Example 3 was obtained.

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Abstract

An object of the present invention is to provide an insulating paint that can obtain an insulating coating that has a high partial discharge inception voltage and hardly causes insulation breakdown even when an inverter surge voltage occurs, and an insulated wire using the same. The insulating paint of the present invention is characterized in that, in the insulating paint obtained by mixing a polyamide-imide resin paint containing a solvent and a polyamide-imide resin, and an organosol, the polyamide-imide resin paint is as follows Formation: In the presence of an azeotropic solvent, a diamine component including an aromatic diamine having a divalent aromatic group having three or more aromatic rings and an acid component are subjected to a synthesis reaction to obtain a resin component (X) , making the isocyanate component (Y) containing the diisocyanate (Y1) which has a curved structure in a molecule|numerator, and the said resin component (X) carry out synthesis reaction.

Description

technical field [0001] The present invention relates to an insulating paint and an insulated wire using the same, and more particularly to an insulating paint suitable for coils of electric equipment such as motors and transformers, and an insulating wire manufactured using the same. Background technique [0002] In general, insulated electric wires (enameled wires) provided with an insulating coating layer formed of one or more layers of polyimide, Polyamide-imide, polyester-imide and other resins dissolved in organic solvents are coated with insulating paint and baked on metal conductors with a cross-sectional shape (such as a circle or a rectangle) that matches the purpose and shape of the coil. (conductor) and get an insulating coating around it. [0003] Electrical equipment such as rotating machines and transformers are gradually being driven by inverter control. In electrical equipment using such inverter control, when the inverter surge voltage (surge voltage) gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D5/25C08G73/14H01B7/02H01B3/30C09D7/61
CPCC09D179/08H01B13/065C08G73/14C09D7/1266H01B3/305C09D7/1216C08K3/36C09D7/61C09D7/67
Inventor 本田佑树阿部富也锅岛秀太菊池英行
Owner HITACHI METALS LTD
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