Vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof

A technology of vacuum insulation and flashover along the surface, which is applied to organic insulators, insulators, plastic/resin/wax insulators, etc., and can solve the problem of lack of data on the vacuum surface of insulators

Inactive Publication Date: 2005-04-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof
  • Vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof
  • Vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof

Examples

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Embodiment 1

[0039] Embodiment 1: concrete preparation process comprises the following steps:

[0040] 1. Mix epoxy resin, aluminum hydroxide powder, modified synthetic amine curing agent, and butyl glycidyl ether diluent according to the mass percentage of 66%: 20%: 13%: 0%.

[0041] 2. Put the epoxy resin weighed according to the proportion, the modified synthetic amine curing agent and the butyl glycidyl ether diluent into the oven and heat it at 50°C for 20 minutes, then put it into the vacuum drying oven -0.001 Under Mpa (vacuum tightness 100), vacuumize 30 minutes, remove moisture and air bubble in the raw material;

[0042] 3. Mix the epoxy resin with the modified synthetic amine curing agent, while stirring, slowly add aluminum hydroxide powder and butyl glycidyl ether diluent until the mixture is complete; stir with an electric mixer for 30 minutes, then put it in the oven Heat at 50°C for 20 minutes. Vacuum again at -0.001Mpa (vacuum degree 100) for 30 minutes, then remove and ...

Embodiment 2

[0046] 1. Mix epoxy resin, aluminum hydroxide powder, modified synthetic amine curing agent, and butyl glycidyl ether diluent according to the mass percentage of 50%: 30%: 15%: 5%.

[0047] 2. Put the epoxy resin weighed according to the proportion, the modified synthetic amine curing agent and the butyl glycidyl ether diluent into the oven and heat it at 60°C for 20 minutes, then put it in a vacuum drying oven at - Vacuumize at 0.001Mpa (vacuum degree 100) for 60 minutes to remove moisture and air bubbles in the raw materials;

[0048] 3. Mix the epoxy resin with the modified synthetic amine curing agent, and slowly add aluminum hydroxide powder and butyl glycidyl ether diluent while stirring until complete; stir with an electric mixer for 50 minutes, then put it in the oven for 60 °C for 20 minutes. Vacuum again at -0.001Mpa (vacuum degree 100) for 60 minutes, then remove and remove the air bubbles floating on the surface;

[0049] 4. Cast the raw material without air bubb...

Embodiment 3

[0052] 1. Mixing epoxy resin, aluminum hydroxide powder, modified synthetic amine curing agent, and butyl glycidyl ether diluent according to the mass percentage of 20%: 60%: 13.3%: 6.6%.

[0053] 2. Put the epoxy resin weighed according to the proportion, the modified synthetic amine curing agent and the butyl glycidyl ether diluent into the oven and heat it at 60°C for 20 minutes, then put it in a vacuum drying oven at - Vacuumize at 0.001Mpa (vacuum degree 100) for 60 minutes to remove moisture and air bubbles in the raw materials;

[0054] 3. Mix the epoxy resin with the modified synthetic amine curing agent, and slowly add aluminum hydroxide powder and butyl glycidyl ether diluent while stirring until complete; stir with an electric mixer for 60 minutes, then put it in an oven for 60 minutes °C for 20 minutes. Vacuum again at -0.001Mpa (vacuum degree 100) for 60 minutes, then remove and remove the air bubbles floating on the surface;

[0055] 4. Repeat step 3 once, stir...

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Abstract

This invention relates to a vacuum isolation sub-coating and its process to improve the surface flashover voltage, wherein, the coating is composed of epoxide resin, aluminum hydroxide, modified synthesized amine firming agent, butyl epihydrin aether thinner. The process comprises the steps of materials, bacon, vacuum, mixture, heating and solidifying and cooling and demoulding Comparing with current material, the coating in this invention has higher surface flashover voltage and high flash burn endurance.

Description

Technical field: [0001] The invention belongs to the technical field of vacuum high-voltage insulation, and relates to a vacuum insulator coating and a preparation process that can increase flashover voltage along the surface. Background technique: [0002] Insulators are widely used in various electrical equipment and many modern vacuum devices, and are also used in large-scale cutting-edge equipment, such as X-ray tubes, high-power microwave tubes, particle accelerators, etc., for high-voltage insulation, vacuum sealing and support and fixation role. There is a special phenomenon in the application of insulators in vacuum: when an insulator support is added in a vacuum gap, the insulation system is broken down at a lower voltage and occurs on the surface of the insulator. This phenomenon is called an insulator. flashover breakdown along the surface. That is to say, the surface withstand voltage strength of the insulator is much lower than that of the vacuum gap and insul...

Claims

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Application Information

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IPC IPC(8): H01B3/00H01B3/44H01B17/42H01B17/50H01B19/04
Inventor 李盛涛张磊
Owner XI AN JIAOTONG UNIV
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