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Epoxy resin-based composite insulating material and preparation method thereof

An epoxy resin, composite insulation technology, applied in plastic/resin/wax insulators, organic insulators, etc., can solve the problem of low breakdown field strength of composite insulation materials, and achieve stable DC breakdown field strength and good breakdown strength. , the effect of simple equipment

Inactive Publication Date: 2019-06-04
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of low breakdown field strength of composite insulating materials, the invention provides an epoxy resin-based composite insulating material and its preparation method

Method used

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  • Epoxy resin-based composite insulating material and preparation method thereof
  • Epoxy resin-based composite insulating material and preparation method thereof
  • Epoxy resin-based composite insulating material and preparation method thereof

Examples

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Embodiment 1

[0031] An epoxy resin-based composite insulating material, comprising the following components in parts by mass: 1.45-4.09 parts of silicon carbide nanoparticles, 0.47 parts of hexagonal boron nitride sheet, 25 parts of epoxy resin, 22 parts of curing agent and 0.03 parts of accelerator .

Embodiment 2

[0033] An epoxy resin-based composite insulating material, comprising the following components in parts by mass: 1.45-4.09 parts of silicon carbide nanoparticles, 0.47 parts of hexagonal boron nitride sheet, 25 parts of epoxy resin, 22 parts of curing agent and 0.03 parts of accelerator .

[0034] In this embodiment, the particle size of the silicon carbide nanoparticles is 30-50 nm, the thickness of the hexagonal boron nitride sheet is 80-150 nm, and the diameter is 3-5 μm.

Embodiment 3

[0036] An epoxy resin-based composite insulating material, comprising the following components in parts by mass: 1.45-4.09 parts of silicon carbide nanoparticles, 0.47 parts of hexagonal boron nitride sheet, 25 parts of epoxy resin, 22 parts of curing agent and 0.03 parts of accelerator , wherein the silicon carbide nanoparticles have a particle size of 30-50 nm, the hexagonal boron nitride sheet has a thickness of 80-150 nm, and a diameter of 3-5 μm.

[0037] In this embodiment, the epoxy resin is E-51 type phenolic propane polyester resin, E-44 type epoxy resin, bisphenol A type epoxy resin, polyphenol type glycidyl ether epoxy resin or glycidyl ester type One of the epoxy resins; the curing agent is methyl hexahydrophthalic anhydride, and the accelerator is 2-ethyl-4-methylimidazole.

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Abstract

The invention relates to an epoxy resin-based composite insulating material and a preparation method, and belongs to the technical field of electric power insulating materials. In order to solve the problem of low breakdown field strength of a composite insulating material, the invention provides an epoxy resin-based composite insulating material. The epoxy resin-based composite insulating material comprises the following ingredients (by weight): 1.45-4.09 parts of silicon carbide nano-particles, 0.47 part of hexagonal boron nitride sheet, 25 parts of epoxy resin, 22 parts of a curing agent, and 0.03 part of an accelerant. By codoping epoxy resin with low loading level of semiconductor silicon carbide nano-particles and the insulator hexagonal boron nitride sheet, conducting nonlinearity of the composite insulating material is raised, and stable DC breakdown field strength and low threshold field strength are also guaranteed such that the composite insulating material meets the comprehensive requirements on electrical performance. By applying the epoxy resin-based composite insulating material to a high-voltage direct current bushing, operational stability of the high-voltage bushing can be guaranteed, and service life of the high-voltage bushing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of electrical insulating materials, and in particular relates to an epoxy resin-based composite insulating material and a preparation method thereof. Background technique [0002] In high-voltage power transmission and transformation systems, with the higher the transmission voltage level, the importance and difficulty of solving insulation problems become more obvious, and the problem of electric field equalization of insulating equipment or components becomes more prominent. For example, the ±800kV DC wall bushing has frequent failures due to local electric field distortion, and the insulation system of key parts such as bushings, cable terminals, and large motor stator insulation is difficult to meet the gradually increasing electrical insulation performance requirements, so it is necessary to introduce nonlinearity Composite materials are used to improve the electric field distribution and increase its b...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/34C08K3/38H01B3/40
Inventor 迟庆国崔爽张天栋张昌海王暄
Owner HARBIN UNIV OF SCI & TECH
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