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A kind of high-voltage electrical insulation filling paste and its preparation method and application

An insulation filling and high-voltage electrical technology, applied in the direction of organic insulators, organic liquid insulators, plastic/resin/wax insulators, etc., can solve the problem of reducing the service life of power transmission and transformation equipment, oil insulation materials are not environmentally friendly, oil insulation materials are easy to Flow and other problems, achieve superior electrical insulation performance, reduce labor costs, and reduce viscosity

Active Publication Date: 2022-04-19
SHENZHEN MPD HITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, oil-based insulating materials are commonly used in domestic high-voltage and ultra-high-voltage fields, such as transformer oil or alkylbenzene oil, but oil-based insulating materials are not environmentally friendly, and because they are liquids, they are easy to leak and flammable under fault conditions. Explosive, need to be replaced frequently, maintenance work is relatively cumbersome, etc.
[0004] At the same time, most of the power equipment is built under some harsh natural conditions, such as strong wind, ice and snow, tide, dust and even earthquakes. Due to the heavy weight of oil insulation materials, the service life of power transmission and transformation equipment is greatly reduced, and oil The insulating material is easy to flow and has poor low temperature resistance, so it is not suitable for use at low temperature

Method used

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  • A kind of high-voltage electrical insulation filling paste and its preparation method and application
  • A kind of high-voltage electrical insulation filling paste and its preparation method and application
  • A kind of high-voltage electrical insulation filling paste and its preparation method and application

Examples

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Effect test

preparation example 1

[0043] Preparation examples 1-4 provide a density regulator, and preparation example 1 is taken as an example below for illustration.

[0044] The density modifier that preparation example 1 provides, its preparation steps are:

[0045] Mix 4kg of isobutane and 3kg of silica hydrosol evenly, then add 85kg of polymers of methyl methacrylate, 1,1-dichloroethylene and acrylonitrile, and mix evenly to obtain a density regulator;

[0046] Wherein, the model of the silica hydrosol is LS-28;

[0047] The polymer of methyl methacrylate, 1,1-dichloroethylene and acrylonitrile was purchased from Sarn Chemical Technology (Shanghai) Co., Ltd.

[0048] Preparation Example 2-3 is the same as Preparation Example 1, except that the quality of the raw materials used to prepare the density regulator is different, see Table 2 for details.

[0049] Table 2

[0050] components Preparation Example 1 Preparation example 2 Preparation example 3 Polymer of methyl methacrylate wi...

preparation example 4

[0051] Preparation Example 4 is the same as Preparation Example 3, except that the model of the silica hydrosol is replaced by LS-40 from LS-28.

[0052] Preparation of Comparative Example

Embodiment 1

[0055] Embodiments 1-18 provide a high-voltage electrical insulation filling paste, which will be described below by taking Embodiment 1 as an example.

[0056] The high-voltage electrical insulation filling paste provided by embodiment 1, its preparation steps are:

[0057] S1: Heat 70kg of base oil to 120°C and keep it for 2h, then add 3kg of thickener, stir at 110°C for 2h at a stirring speed of 1000rpm to obtain mixture 1;

[0058] S2: Stir the mixture 1 at 90° C. at a stirring speed of 800 rpm for 1 h to obtain a mixture 2;

[0059] S3: Add 5 kg of polyisocyanate and 1 kg of density modifier to mixture 2, and stir at 90° C. for 2 hours at a stirring speed of 300 rpm to obtain mixture 3;

[0060] S4: Add 0.2kg of antioxidant and 0.2kg of alcohol dispersant to mixture 3, and stir evenly at 80°C to obtain mixture 4;

[0061] S5: Cool the mixture 4 to 50°C, add 3 kg of fumed silica, stir evenly, and vacuumize to obtain a high-voltage electrical insulating filling paste;

...

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Abstract

The application relates to the field of high-end power transmission and transformation materials, in particular to a high-voltage electrical insulation filling paste and its preparation method and application. In parts by weight, the raw materials for the preparation of high-voltage electrical insulation filling paste include: 70-90 parts of base oil, 3-8 parts of fumed silica, 3-8 parts of thickener, 5-10 parts of polyisocyanate, and 1 part of density regulator. -10 parts, 0.2-1 part of antioxidant, 0.2-1 part of alcoholic dispersant; the density regulator is composed of polymer, isobutane and silica hydrosol, and the structure of the polymer is: . The high-voltage electrical insulation filling paste provided by this application has excellent electrical insulation performance, high volume resistivity, high breakdown voltage, high cone penetration at low temperature, and does not need to be replaced frequently like oil insulation materials, which not only improves work efficiency It also reduces labor costs, conforms to the concept of safety, environmental protection, and less oil, and has the advantages of energy saving, simple process, convenient use, clean and pollution-free, etc.

Description

technical field [0001] The application relates to the field of high-end power transmission and transformation materials, in particular to a high-voltage electrical insulation filling paste and its preparation method and application. Background technique [0002] Since humans discovered and used electricity, the demand for electricity has been growing exponentially. Correspondingly, the world power grid has also experienced the development of voltage levels from low to high, networking scale from small to large, and resource allocation capabilities from weak to strong. course. Insulating materials are the basis and guarantee for the development of electrical products. The main function of insulating materials is to isolate charged conductors with different potentials in electrical equipment, so that the current can flow according to a certain path, and it can also be used as mechanical support and fixation, as well as extinguishing. Arc, heat dissipation, energy storage, moi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/00C08L91/06C08L33/12C08L77/00C08L53/02C08K13/04C08K7/26C08K3/36C08K5/01C08K5/205H01B3/22H01B3/34
CPCC08L91/00C08L91/06H01B3/22H01B3/34C08L2203/202C08L2201/08C08L33/12C08L77/00C08L53/025C08K13/04C08K7/26C08K3/36C08K5/01C08K5/205
Inventor 蓝云燕李祖君何承平丘富彬吴峰
Owner SHENZHEN MPD HITECH CO LTD