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Insulator material, insulator and preparation method

A technology of insulators and raw materials, applied in the field of composite material preparation, can solve problems such as easy accumulation of large surface charges along the surface, distortion of electric field on the surface of basin-type insulators, flashover, etc.

Active Publication Date: 2017-12-01
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that during the operation of GIS, the local electric field distortion on the surface of the pot insulator is very serious, making it easy to accumulate a large amount of surface charge on the surface and cause flashover along the surface

Method used

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  • Insulator material, insulator and preparation method
  • Insulator material, insulator and preparation method

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preparation example Construction

[0034] A method for preparing the above-mentioned insulator material according to an embodiment is also provided, including the following steps S1-S2.

[0035] Step S1: mixing the raw materials of the insulator material to obtain a base material.

[0036] In one of the embodiments, the step of pulverizing and drying each raw material is also included. Specifically, the step of pulverizing and drying the micron silicon carbide filler and the nanometer silicon carbide filler is also included, so as to avoid the influence of residual moisture in the filler particles on the performance of the final base material. Preferably, the drying condition is drying at 80-100° C. for 12-24 hours. More preferably, the drying condition is drying at 100° C. for 12 hours.

[0037]In one embodiment, step S1 includes the following steps: adding micron silicon carbide fillers, nanometer silicon carbide fillers, and a curing agent to the epoxy resin in sequence under stirring conditions, and mixin...

Embodiment 1

[0051] An insulator material, the raw material of which is mainly composed of 100 parts of epoxy resin, 30 parts of curing agent, 10 parts of micron silicon carbide filler, and 10 parts of nanometer silicon carbide filler. The epoxy resin is glycidyl ether bisphenol A epoxy resin; the curing agent is polyamide resin HY-651; the particle size of the micron silicon carbide filler is 30 μm, and the particle size of the nano silicon carbide is 50 nm. Among them, the micron silicon carbide filler and the nanometer silicon carbide filler are β-type silicon carbide provided by Hengxin Silicon Carbide Powder Co.Ltd.

[0052] The insulating material is made into an insulator, including the following steps:

[0053] Both the micron silicon carbide filler and the nanometer silicon carbide filler were ground and pulverized, and then both were dried at 100° C. for 12 hours.

[0054] Under the condition of stirring, add micron silicon carbide filler into the epoxy resin, continue to stir f...

Embodiment 2

[0058] Embodiment 2 is basically similar to the insulator material and preparation method thereof in Embodiment 1, except that the number of parts of micron silicon carbide filler and nanometer silicon carbide filler is 30 parts, wherein the curing agent is phthalic anhydride, micron The particle size of the silicon carbide filler is 50 μm, and the particle size of the nano-silicon carbide is 80 nm. The degassing condition of the base material is degassing at 25°C for 2 hours, and then degassing at 55°C for 1 hour; the curing condition is curing at 60°C for 5 hours, and then curing at 140°C for 4.5 hours.

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Abstract

The invention discloses an insulator material, an insulator and a preparation method. The insulator material mainly comprises, by weight, 25-35 parts of epoxy resin, 5-55 parts of curing agents and 5-55 parts of micron silicon carbide fillers and nano-silicon carbide fillers in 100 parts. The particle size of the micron silicon carbide fillers is 10-50 micrometers, and the particle size of the nano-silicon carbide fillers is 50-100 nanometers. The micron silicon carbide fillers and the nano-silicon carbide fillers with two different sizes are compounded and doped into the epoxy resin by the aid of the function of the curing agents, synergistic effects of the fillers and the epoxy resin are sufficiently achieved, ratio is controlled, and the insulator material has non-linear electric conductivity similar to that of silicon carbide. The insulator material is applied to the insulator, surface electric field distribution of the insulator can be effectively improved and homogenized, so that local electric field distortion factors are decreased, and faults such as surface discharge or flashover of the insulator are reduced.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to an insulator material, an insulator and a preparation method. Background technique [0002] With the rapid development of the national economy, the status of the electric power industry is becoming more and more important. GIS (Gas insulated switchgear, gas insulated metal-enclosed switchgear) is widely used in power systems such as substations due to its small footprint, high reliability, and flexible configuration and installation. As an important insulation structure of GIS equipment, pot insulator plays a decisive role in the stable operation of GIS and the safety of the entire power grid. Research shows that during the operation of GIS, the local electric field distortion on the surface of the pot insulator is very serious, making it easy to accumulate a large amount of surface charge on the surface and cause flashover along the surface. According to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K3/34H01B3/40
CPCC08K3/34C08K2201/003C08K2201/011C08K2201/014H01B3/40C08L63/00
Inventor 傅明利侯帅景一刘通惠宝军杜伯学杜强李进
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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