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Electrical insulating material and high voltage equipment using it

A technology for electrical insulating materials and high-voltage equipment, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of increased dielectric constant, decreased mechanical properties such as heat resistance and breaking strength, and decreased resin properties, etc. To achieve the effect of excellent crack resistance

Inactive Publication Date: 2015-11-18
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case of using core-shell type elastomer particles, in our experiments, it was confirmed that it is difficult to obtain an effect without adding a large amount
As a result, although the flexibility of the resin is improved, other resin properties are degraded. In particular, an increase in the dielectric constant, an increase in tan δ, or a decrease in mechanical properties such as heat resistance and breaking strength are problematic.

Method used

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  • Electrical insulating material and high voltage equipment using it
  • Electrical insulating material and high voltage equipment using it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] With respect to 100 parts by weight of epoxy resin (bisphenol A type and bisphenol F type), 10 parts by weight of radiation-crosslinked acrylonitrile butadiene rubber particles modified by carboxylic acid (average particle diameter 50-100nm), 415 parts by weight of pulverized silica as inorganic particles, acid anhydride curing agent, silane coupling agent, titanate coupling agent, and imidazole compound as a curing accelerator are heated to 80°C while applying sufficient shearing force , while mixing. After defoaming the formed mixed solution, it was cured under the heating conditions of 100° C. / 5 hours + 170° C. / 7 hours to form a cured product.

Embodiment 2

[0062] With respect to 100 parts by weight of epoxy resin (bisphenol A type and bisphenol F type), 10 parts by weight of radiation-crosslinked acrylonitrile butadiene rubber particles modified by carboxylic acid (average particle diameter 50-100nm), 300 parts by weight of pulverized silica as inorganic particles, acid anhydride curing agent, silane coupling agent, titanate coupling agent, and imidazole compound as a curing accelerator are heated to 80°C while applying sufficient shearing force , while mixing. After defoaming the formed mixed solution, it was cured under the heating conditions of 100° C. / 5 hours + 170° C. / 7 hours to form a cured product.

Embodiment 3

[0064] With respect to 100 parts by weight of epoxy resin (bisphenol A type and bisphenol F type), 8 parts by weight of radiation-crosslinked acrylonitrile butadiene rubber particles modified by carboxylic acid (average particle diameter 50-100nm), 600 parts by weight of pulverized silica as inorganic particles, an acid anhydride curing agent, a silane coupling agent, a titanate coupling agent, and an imidazole compound as a curing accelerator are heated to 80°C while applying sufficient shearing force , while mixing. After defoaming the formed mixed solution, it was cured under the heating conditions of 100° C. / 5 hours + 170° C. / 7 hours to form a cured product.

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Abstract

An electrical insulating material excellent in crack resistance properties without deteriorating the properties of an insulating resin in a solid insulation system, and a high voltage equipment using the same are provided. An electrical insulating material comprising: an epoxy resin; a curing agent; and an elastomer particle (3) and an inorganic particle (2) as an additive material, wherein at least a part of the elastomer particle (3) is radiation cross-linked. A high voltage equipment such as a transformer, a circuit breaker, a motor, and an inverter, in which this electrical insulating material is applied at a site requiring an electrical insulation of an electrical equipment.

Description

technical field [0001] The present invention relates to electrical insulation materials and high voltage equipment for their application where electrical insulation is required. Background technique [0002] Gas insulation using insulating gas, vacuum insulation, or oil insulation filled with insulating oil have traditionally been the mainstream insulation methods applied to power distribution equipment such as transformers and circuit breakers, or high-voltage equipment such as motors and inverters. However, due to the trend toward downsizing and weight reduction of equipment in recent years, the application of a solid insulation method using a solid insulating material excellent in dielectric strength has been developed. [0003] In solid insulation methods, thermosetting resins such as epoxy resins are often used because they have good insulation properties, heat resistance, mechanical properties, and chemical stability. However, in general, thermosetting resins have a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L13/00C08K13/02C08K3/36H01B3/40
CPCH01B3/40
Inventor 松本启纪大狱敦竹内正树
Owner HITACHI IND EQUIP SYST CO LTD
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