A kind of nano filler and epoxy composite insulation material and its preparation method and epoxy composite insulation part

A nano-filler and composite insulation technology, applied in the field of nano-materials, can solve the problems of poor flashover performance along the vacuum surface, and achieve the effects of optimized dispersion temperature, clear shell structure, and clear edges

Active Publication Date: 2022-05-24
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the application discloses an epoxy composite insulating material and its preparation method and epoxy composite insulating parts, which can effectively solve the technical problem of poor vacuum flashover performance of the epoxy composite insulating material

Method used

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  • A kind of nano filler and epoxy composite insulation material and its preparation method and epoxy composite insulation part
  • A kind of nano filler and epoxy composite insulation material and its preparation method and epoxy composite insulation part
  • A kind of nano filler and epoxy composite insulation material and its preparation method and epoxy composite insulation part

Examples

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Embodiment 1

[0068] The examples of this application provide Al 2 O 3 / TiO 2 Core-shell structure nanofillers, epoxy composite insulating materials and epoxy composite insulating parts, the specific preparation methods are as follows:

[0069] 1. Preparation of Al 2 O 3 / TiO 2 Core-Shell Structured Nanofillers: Nano-Al in α Phase 2 O 3 As the core, butyl titanate (TBOT, C 16 H 36 O 4 Ti) is the precursor, anhydrous ethanol is the solvent, and glacial acetic acid is the chelating agent to generate TiO 2 shell. Al 2 O 3 / TiO 2 The schematic diagram of the preparation structure of core-shell nanofillers is shown in figure 1 shown. The specific steps are:

[0070] 1) Weigh 1g of α-phase nano-Al with a diameter of 30nm 2 O 3 , through the three-roll mill three times. Add 25 mL of absolute ethanol. 2 g of polyvinylpyrrolidone (PVP) was added to the solution as a binding agent, and stirred uniformly with a glass rod; 1 ml of butyl titanate was added, and slowly stirred for 5 m...

Embodiment 2

[0087] The embodiment of the present application provides the test and dispersion test of the flashover voltage of the epoxy composite insulating part in vacuum DC along the surface, and the specific preparation method is as follows:

[0088] Doping Example 1 with 1wt% Al 2 O 3 / TiO 2 Epoxy composite insulating parts with core-shell structure nanofillers (core Al 2 O 3 , shell TiO 2 ) and bisphenol A type WSR618 E-51 liquid epoxy resin according to the samples prepared in Example 1 were respectively subjected to DC creeping flashover voltage test under vacuum, and each sample was flashed ten times to observe the creeping flashover voltage. changing laws. The result is as image 3 It can be seen that after the initial flash phenomenon, the average flashover voltage (41.9kV) along the surface of the composite sample (marked as Al@Ti-1 composite in the figure) is higher than that of the pure epoxy sample (marked as pure epoxy in the figure). epoxy) (38.6kV), that is, the s...

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Abstract

The application belongs to the technical field of nanomaterials, and in particular relates to a nanofiller, an epoxy composite insulating material, a preparation method thereof, and an epoxy composite insulating part. The present application provides a method for preparing a nanofiller, comprising: mixing a first solution and a second solution, performing a heating reaction, and then dehydrating and drying to obtain a nanofiller; wherein, the method for preparing the first solution includes: mixing the nanometer Al2O3, the first solvent, the binding agent, and titanate are mixed to prepare the first solution; the preparation method of the second solution includes: mixing weak acid, ethanol, the second solvent and the acid-base regulator to prepare the second solution . The application discloses an epoxy composite insulating material, a preparation method thereof and an epoxy composite insulating part, which can effectively solve the technical problem of poor vacuum surface flashover performance of the epoxy composite insulating material.

Description

technical field [0001] The application belongs to the technical field of nanomaterials, and in particular relates to a nanofiller and an epoxy composite insulating material, a preparation method thereof, and an epoxy composite insulating part. Background technique [0002] Under the action of the applied electric field, the insulation system in the power equipment often occurs creeping discharge first, and when the voltage is further increased, it develops into a penetrating breakdown, that is, creeping flashover. Therefore, in practical applications, the creepage flashover of insulating materials is a key factor limiting the performance of power transmission and transformation equipment. Due to the relatively precise structural design of actual power equipment, in some cases where the discharge cannot be suppressed by means of improving the insulation coordination and strengthening the insulation structure, in order to control the occurrence of the flashover phenomenon alon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/22C08K9/06C08L63/00H01B3/40
CPCC08K9/10C08K3/22C08K9/06C08L63/00H01B3/40C08K2201/011C08K2003/2227C08K2003/2241
Inventor 于是乎余欣黄振魏俊涛汪政李志锋吕鸿
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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