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Composite insulator core rod and its preparation method and composite insulator

A technology of composite insulators and mandrels, which is applied in the direction of insulators, electrical components, circuits, etc., to achieve the effects of low cost, simple process steps, and short production cycle

Active Publication Date: 2017-03-08
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a large-diameter composite insulator mandrel that can be pultruded at one time to solve the problem that large-diameter composite insulators need to be pultruded multiple times.

Method used

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  • Composite insulator core rod and its preparation method and composite insulator

Examples

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preparation example Construction

[0059] The present invention also provides a preparation method of a composite insulator mandrel, the preparation method comprising the following steps:

[0060] Mix the insulating and heat-conducting particles with the resin glue to obtain a mixed solution;

[0061] Immersing the fiber bundles in the mixture, and then pultruding;

[0062] The product after pultrusion is solidified to obtain a composite insulator core rod.

[0063] Wherein, the insulating and heat-conducting particles can be treated with a surface coupling agent, or can be used without surface treatment. The present invention is preferably treated with a surface coupling agent.

[0064] Wherein, the surface coupling agent treatment preferably includes the following steps: adding 0.1 to 1.1 parts by weight of a coupling agent to 100 parts by weight of insulating and heat-conducting particles, stirring evenly at 120° C., and standing for 5 to 10 minutes.

[0065] Preferably, 40-80 parts by weight of insulatin...

Embodiment 1

[0078] Insulating and heat-conducting particles: AlN with an average particle size of 5 μm.

[0079] Resin glue: 100 parts by weight of epoxy resin, 85 parts by weight of curing agent methyltetrahydrophthalic anhydride, and 0.3 parts by weight of curing accelerator benzyldimethylamine.

[0080] Fiber: glass fiber with a diameter of 15 μm and a linear density of 9600 tex.

[0081] Add 50 parts by weight of insulating and heat-conducting particles into 100 parts by weight of resin glue, and stir for 30 minutes to form a mixed solution.

[0082] Put the mixed liquid into the immersion tank of the pultrusion machine, immerse the glass fiber in the immersion tank of the pultrusion machine, pultrude and solidify in the pultrusion machine.

[0083] Set the temperature of each section of pultrusion to 125±15°C, 150±20°C, and 175±10°C in turn, and set the temperature of each section of post-curing to 125±10°C, 95±10°C, 60±10°C, Set the extrusion speed to 3cm / min, and finally obtain t...

Embodiment 2

[0086] Insulating and heat-conducting particles: 100 parts by weight of Al with a particle size of 3 μm 2 o 3 , 200 parts by weight of Al with a particle size of 14nm 2 o 3 .

[0087] Resin glue: 100 parts by weight of epoxy resin, 85 parts by weight of curing agent methyltetrahydrophthalic anhydride, and 0.8 parts by weight of curing accelerator benzyldimethylamine.

[0088] Glass fiber: glass fiber with a diameter of 15 μm and a linear density of 9600 tex.

[0089] Add 60 parts by weight of insulating and heat-conducting particles into 100 parts by weight of epoxy resin glue, and stir for 30 minutes to form a mixed solution.

[0090] Put the mixed liquid into the immersion tank of the pultrusion machine, immerse the glass fiber in the immersion tank of the pultrusion machine, collect and solidify in the pultrusion machine.

[0091] Set the temperature of each section of the pultrusion die to 95±15°C, 145±20°C, and 160±10°C, and set the temperature of each section after ...

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Abstract

The invention relates to a core rod of a composite insulator. The core rod comprises fiber bundles, a resin body which wraps the fiber bundles and insulating heat-conduction particles distributed in the resin body. Due to the fact that the insulating heat-conduction particles are added into the resin body, the insulating heat-conduction particles can form a series of heat transfer paths in the resin body, heat conduction is accelerated, and further once pultrusion molding of the large-diameter core rod can be realized. The invention also provides a preparation method of the core rod of the composite insulator as well as the composite insulator.

Description

technical field [0001] The invention relates to the technical field of composite insulators, in particular to a composite insulator mandrel, a preparation method thereof and a composite insulator. Background technique [0002] The earliest insulators used on high-voltage or extra-high-voltage power transmission lines were porcelain insulators or glass insulators. With the advent of composite insulators in the last century, the core rod, the internal support member of composite insulators, has also received more and more attention in the industry. [0003] At present, the production technology of composite insulator core rods with a diameter below 90mm is relatively mature. However, the production technology of large-diameter composite insulator core rods, especially those with a diameter above 110mm, is still immature. The current production method of large-diameter composite insulator core rods generally adopts multiple pultrusion molding processes. [0004] The multiple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/38H01B17/32H01B19/00
Inventor 马斌于晓蕾蔚永强陈云
Owner JIANGSU SHENMA ELECTRIC CO LTD