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An epoxy-based nonlinear conductive coating and its preparation process

A nonlinear, epoxy-based technology, used in epoxy resin coatings, coatings, conductive coatings, etc., can solve the problems of high cost, difficult on-site application, difficult to achieve uniform coating, etc., and achieve low cost and good nonlinearity. Conductivity characteristics, effect of good bonding effect

Active Publication Date: 2022-04-15
WUHAN UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, common insulator surface modification methods such as fluorination and plasma surface treatment have problems such as high cost and difficulty in field application; and most of the existing material surface coating or spraying processes are difficult to achieve uniform coating

Method used

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  • An epoxy-based nonlinear conductive coating and its preparation process
  • An epoxy-based nonlinear conductive coating and its preparation process
  • An epoxy-based nonlinear conductive coating and its preparation process

Examples

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Embodiment 1

[0045] An epoxy-based nonlinear conductive coating with the function of regulating the charge on the surface of an insulator. The schematic diagram of its preparation process is shown in figure 1 , the specific preparation steps are as follows:

[0046] 1) Weigh each raw material according to the proportion, each raw material and its parts by weight are: 100 parts of epoxy resin, 80 parts of liquid anhydride curing agent, 0.5 part of accelerator, 10 parts of epoxy diluent, 9.5 parts of silicon carbide, 0.475 parts of silane coupling agent; place the weighed epoxy resin in a constant temperature oven at 100°C for 2 hours to remove moisture; dry the silicon carbide powder in a constant temperature oven at 100°C for 12 hours;

[0047] 2) Place the weighed silane coupling agent KH550 in a certain amount of absolute ethanol, and ultrasonically disperse it in a water bath at 35°C for 20 minutes to obtain a uniformly dispersed ethanol solution of KH550;

[0048] 3) Add silicon carbi...

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Abstract

The invention discloses an epoxy-based non-linear conductive coating with the function of regulating the charge on the surface of an insulator and a preparation process thereof. The nonlinear conductive material is used as the main raw material to make a modified epoxy-based coating stock solution by blending method, and then coated and cured to form an epoxy-based nonlinear conductive coating with the function of regulating the surface charge of the insulator on the surface of the insulator. The coating obtained by the invention has a smooth surface, uniform adhesion, and good surface charge regulation function. The actual measurement shows that when the amount of charge accumulation is too large, the coating material will enter the nonlinear conductance region, thereby accelerating the charge dissipation along the surface, and achieving the effect of regulating charge accumulation; and the preparation method involved in the present invention is simple and has a wide source of raw materials, which is suitable for popularization and application .

Description

technical field [0001] The invention belongs to the technical field of insulating material preparation, and in particular relates to an epoxy-based non-linear conductive coating with the function of regulating the surface charge of an insulator and a preparation process thereof. Background technique [0002] In recent years, with the rapid development of UHV DC transmission technology, GIS, GIL and other gas-insulated equipment have attracted widespread attention due to their small footprint, large transmission capacity, high reliability, and good environmental compatibility. Since the internal insulator of the DC GIS / GIL equipment has been subjected to the action of a unipolar DC electric field for a long time, a large amount of charge is accumulated on its surface, which leads to the local electric field distortion at the gas-solid interface, which greatly reduces the insulator's surface tolerance and limits the DC GIS / GIL. Development and application of GIL. Therefore, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/61C09D7/63C09D5/24B05D1/00B05D7/24B05D3/02
CPCC09D163/00C09D7/61C09D7/63C09D5/24C09D7/67C09D7/69B05D1/00B05D7/24B05D3/0254C08K2201/011C08K2003/2296C08K2201/001C08K3/34C08K3/22C08K5/544
Inventor 潘成唐炬潘子君罗毅王邸博
Owner WUHAN UNIV
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