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Epoxy resin based micron-nano composite material and preparation method thereof

A technology of epoxy resin matrix and epoxy resin, which is applied in the field of composite materials, can solve the problems of insignificant electric dendrite growth ability and corona corrosion resistance, improve the ability to suppress electric tree dendrites and corona corrosion resistance, and improve Electric dendrite resistance and corona corrosion resistance, effect of corrosion depth reduction

Inactive Publication Date: 2017-05-31
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0003] Aiming at the defects and improvement needs of the prior art, the present invention provides an epoxy resin-based micro-nano composite material and its preparation method, the purpose of which is to solve the problems by adding silica and montmorillonite to the epoxy resin The existing epoxy resin-based composite materials have no obvious technical problems in the ability to inhibit the growth of electric dendrites and the ability to resist corona corrosion

Method used

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  • Epoxy resin based micron-nano composite material and preparation method thereof
  • Epoxy resin based micron-nano composite material and preparation method thereof
  • Epoxy resin based micron-nano composite material and preparation method thereof

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preparation example Construction

[0028] The preparation method of the epoxy resin-based micro-nano composite material comprises the following steps:

[0029] (1) According to the mass ratio of silica, montmorillonite and epoxy resin, add silica and montmorillonite to epoxy resin, and at 60°C, use 1500r / min high-speed mechanical stirring while adding 240w ultrasonic Disperse, the time is 3h, make it uniformly dispersed to obtain a dispersed system;

[0030] (2) According to the mass ratio of curing agent, curing accelerator and epoxy resin, add curing agent and curing accelerator to the dispersion system obtained in step (1), stir for 30 minutes to make it mix evenly, and then connect the vacuum pump for degassing processing to obtain a composite dispersion system;

[0031] (3) The epoxy resin micro-nano filler composite dispersion system containing curing agent and curing accelerator obtained in step (2) is poured into a mold preheated at 120°C in advance, and pre-cured at 150°C for 3 hours. It is prelimina...

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Abstract

The invention discloses an epoxy resin based micron-nano composite material and a preparation method thereof. The epoxy resin based micron-nano composite material comprises an epoxy resin base, and silicon dioxide particles and montmorillonoid uniformly dispersed in the epoxy resin base, wherein the content of the silicon dioxide particles is 4.0 weight percent of the epoxy resin base; the content of the montmorillonoid is 1.0 weight percent of the epoxy resin base. Through the epoxy resin based micron-nano composite material and the preparation method thereof provided by the invention, the epoxy resin based micron-nano composite material with a favorable electrical tree inhibiting ability and corona corrosion resistant performance is prepared, and the preparation method of the epoxy resin based micron-nano composite material is simple in steps, so that the epoxy resin based micron-nano composite material is suitable for mass production, and has favorable industrial prospect and application prospect.

Description

technical field [0001] The invention belongs to the field of composite materials, and more specifically relates to an epoxy resin-based composite material and a preparation method thereof. Background technique [0002] The thermosetting resin produced by the reaction of epoxy resin and curing agent has unique advantages in bonding performance, insulation performance, physical and chemical stability and good processability, making it widely used in the field of electrical insulation, especially in It is widely used in 500kV high-voltage power transmission and transformation insulation components, 20kV current transformers, cable junction boxes and other products. Electric equipment must face the problem of insulation aging during long-term operation. Electrical aging is a unique aging form of insulating materials. It is aging caused by high voltage or high electric field strength for a long time. Electric tree branches are generated in epoxy resin. In the future, complete or...

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Application Information

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IPC IPC(8): C08L63/00C08K9/04C08K3/36C08K3/34C08K7/00
CPCC08K9/04C08K3/346C08K3/36C08K7/00C08K2201/003C08K2201/011C08L2203/20C08L63/00
Inventor 张晓虹潘宇王雅芸李瑞显
Owner HARBIN UNIV OF SCI & TECH
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