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Insulating electric wire and varnish for forming insulating layers

一种绝缘电线、绝缘层的技术，应用在绝缘电缆、绝缘体、绝缘导体等方向，能够解决温度升高、产生离子、介质击穿等问题

Active Publication Date: 2017-08-29
SUMITOMO ELECTRIC IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occurrence of corona discharge may cause, for example, a local increase in temperature, generation of ozone, generation of ions, which may lead to early dielectric breakdown and lead to a reduction in the life of insulated wires and electronic instruments

Method used

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  • Insulating electric wire and varnish for forming insulating layers
  • Insulating electric wire and varnish for forming insulating layers
  • Insulating electric wire and varnish for forming insulating layers

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0060] The varnish for forming the insulating layer is a varnish for forming the insulating layer 2 of the insulated electric wire. The varnish for forming an insulating layer according to the first embodiment includes a matrix-forming resin composition, and hollow-forming particles 5 having a core-shell structure dispersed in the resin composition. In the varnish, the core 6 of the hollow-forming particle 5 contains a pyrolytic resin as a main component, and the shell 7 of the hollow-forming particle 5 contains a main component whose thermal decomposition temperature is higher than that of the pyrolytic resin.

[0061] (resin composition)

[0062] The resin composition is a composition containing, for example, a main polymer, a solvent for dilution, and a hardener. The main polymer is not particularly limited. When a thermosetting resin is used, examples of the host polymer include polyvinyl formal precursors, thermosetting polyurethane precursors, thermosetting acrylic res...

no. 2 Embodiment approach

[0082] The insulating layer forming varnish according to the second embodiment is a varnish for forming an insulating layer of an insulated electric wire like the varnish for forming an insulating layer in the first embodiment. The varnish used to form the insulating layer of the second embodiment includes a matrix-forming resin composition, and hollow particles dispersed in the resin composition. In this varnish, the outer shell of the hollow particles contains resin as a main component.

[0083] The resin composition of the varnish forming the insulating layer may be the same as that of the varnish forming the insulating layer of the first embodiment.

[0084] Examples of the resin as the main component of the hollow particles include polystyrene, silicone, fluororesin, and polyimide. Among these resins, silicone is preferable from the viewpoint of imparting elasticity to the casing and improving insulation performance and heat resistance performance.

[0085] The lower li...

specific Embodiment approach

[0103] It should be understood that the specific embodiments disclosed herein are only illustrative and non-restrictive in every respect. The scope of the invention is not limited to the configuration of the specific embodiments, but is defined by the following claims. The scope of the present invention covers all modifications within the equivalent meaning and scope of the claims.

[0104] In a specific embodiment, an insulated wire is described in which a single insulating layer is formed on the outer peripheral surface of a conductor. Alternatively, the insulated wire may have a structure in which multiple insulating layers are formed on the outer peripheral surface of the conductor. Specifically, one or more insulating layers may be placed between conductor 1 and include figure 1 Air holes 3 in the insulating layer 2 are formed. Alternatively, one or more insulating layers may be formed over the figure 1 The outer peripheral surface of the insulating layer 2 in the por...

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Abstract

An insulating electric wire according to one embodiment of the present invention is provided with a linear conductor and one or more insulating layers layered on the outer circumferential surface of the conductor, wherein at least one of the one or more insulating layers includes a plurality of pores, an outer shell is provided on the circumferential edge portion of the pores, and the outer shell is derived from particles forming the hollow of a core-shell structure. Varnish for forming insulating layers according to one embodiment of the present invention is used for forming an insulating layer included in an insulating electric wire, and contains a resin composition forming a matrix and particles which are dispersed in the resin composition and which form the hollow of a core-shell structure, wherein the core of the hollow-forming particles contains a heat decomposable resin as a main component, and the heat decomposition temperature of the main component of the shell of the hollow-forming particles is higher than the heat decomposition temperature of the heat decomposable resin.

Description

technical field [0001] The present invention relates to an insulated wire and a varnish for forming an insulating layer. [0002] This application claims priority from Japanese Patent Application No. 2015-212371 filed on October 28, 2015, the entire contents of which are hereby incorporated by reference. Background technique [0003] In an electronic device using a high voltage, for example, a motor using a high voltage, a high voltage is applied to an insulated wire included in the electronic device, and partial discharge (corona discharge) easily occurs on the surface of the insulating coating of the insulated wire. The occurrence of corona discharge may cause, for example, a local increase in temperature, generation of ozone, generation of ions, which may lead to early dielectric breakdown and lead to a reduction in the life of insulated wires and electronic equipment. Therefore, for an insulated wire used in an electronic instrument and on which a high voltage is applie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B13/14
CPCH01B13/16H01B5/004H01B7/0233C08J2201/046C08J2379/08C08J2433/12C08J2483/04H01B3/006C08J9/26C08J2207/06H01B3/447H01B3/46C08J2377/00H01B7/0208H01B13/06
Inventor 太田槙弥前田修平齐藤秀明菅原润山内雅晃田村康吉田健吾古屋雄大畑中悠史
Owner SUMITOMO ELECTRIC IND LTD
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