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Nano filler and epoxy composite insulating material and preparation method thereof, and epoxy composite insulating component

A nano-filler and composite insulation technology, applied in the field of nano-materials, can solve the problems of poor vacuum surface flashover performance, etc.

Active Publication Date: 2021-02-19
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • 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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  • Nano filler and epoxy composite insulating material and preparation method thereof, and epoxy composite insulating component
  • Nano filler and epoxy composite insulating material and preparation method thereof, and epoxy composite insulating component
  • Nano filler and epoxy composite insulating material and preparation method thereof, and epoxy composite insulating component

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Embodiment 1

[0068] The embodiment of the present application provides Al 2 o 3 / TiO 2 The nano-filler with core-shell structure, epoxy composite insulating material and epoxy composite insulating part, the specific preparation method is as follows:

[0069] 1. Preparation of Al 2 o 3 / TiO 2 Nanofillers with core-shell structure: nano-Al with α-phase 2 o 3 As the core, butyl titanate (TBOT, C 16 h 36 o 4 Ti) is a precursor, absolute ethanol is a solvent, and glacial acetic acid is a chelating agent to generate TiO 2 Shell. Al 2 o 3 / TiO 2 The schematic diagram of the preparation structure of the core-shell nanofiller is as follows: 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 a three-roll mill three times. Add 25 mL of absolute ethanol. 2 g of polyvinylpyrrolidone (PVP) was added to the solution as a binder, and stirred evenly with a glass rod; 1 ml of butyl titanate was added, and stirred slowly...

Embodiment 2

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

[0088] Doped with 1wt% Al in Example 1 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 sample that embodiment 1 makes carries out the direct current along the surface flashover voltage test under the vacuum respectively, every kind of sample carries out ten flashovers to observe the surface flashover voltage The law of change. The result is as image 3 As shown, it can be seen that after the initial flash phenomenon, the average surface flashover voltage (41.9kV) 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) (38.6kV), that is, the obtai...

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Abstract

The invention belongs to the technical field of nano materials, and particularly relates to a nano filler and epoxy composite insulating material and a preparation method thereof, and an epoxy composite insulating component. The invention provides a nano filler preparation method, which comprises: mixing a first solution and a second solution, carrying out a heating reaction, and carrying out dehydration drying to prepare a nano filler, wherein the preparation method of the first solution comprises the following steps: mixing nano Al2O3, a first solvent, a binding agent and titanate to preparea first solution, and the preparation method of the second solution comprises the step of mixing weak acid, ethanol, a second solvent and an acid-base regulator to prepare the second solution. The invention discloses an epoxy composite insulating material and a preparation method thereof and an epoxy composite insulating component, and 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, an epoxy composite insulating material, a preparation method thereof, and an epoxy composite insulating part. Background technique [0002] Under the action of an external electric field, the insulation system in power equipment often occurs surface discharge first, and when the voltage further increases, it develops into a penetrating breakdown, that is, surface flashover. Therefore, in practical applications, the surface 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 the actual power equipment, in some cases where the discharge cannot be suppressed by means of improving insulation coordination and strengthening the insulation structure, in order to control the occurrence of flashover along the surface, it is necessa...

Claims

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Application Information

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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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