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High-voltage-resistant m-ABA-SiO2/alicyclic epoxy resin nano composite insulating material and preparation method thereof

A technology of m-aba-sio2 and insulating materials, which is applied in the field of insulation and high voltage resistance, can solve the problems of high surface activity and easy agglomeration, and achieve the effect of non-toxic to human body, simple processing technology and good insulation performance

Active Publication Date: 2021-05-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention finds that nano-silica has a three-dimensional network structure and has good compatibility with alicyclic epoxy resin matrix, but its surface activity is high and it is easy to agglomerate

Method used

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  • High-voltage-resistant m-ABA-SiO2/alicyclic epoxy resin nano composite insulating material and preparation method thereof
  • High-voltage-resistant m-ABA-SiO2/alicyclic epoxy resin nano composite insulating material and preparation method thereof
  • High-voltage-resistant m-ABA-SiO2/alicyclic epoxy resin nano composite insulating material and preparation method thereof

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Experimental program
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Embodiment 1

[0035] 1. Determination of curing process

[0036] All glassware and magnetic stir bars were ultrasonically cleaned and rinsed with ultrapure water prior to preparation.

[0037] First, according to the nature of the curing agent, preset the ratio of the curing agent to the cycloaliphatic epoxy resin (cycloaliphatic epoxy resin: anhydride curing agent = 100:80) and the curing process (100°C / 2h+150°C / 4h). Then add liquid cycloaliphatic epoxy resin and acid anhydride curing agent into the beaker according to the preset proportioning conditions, stir well at room temperature to obtain a transparent solution; then cure the transparent solution according to the preset curing conditions.

[0038] Such as figure 1 As shown, the DSC curve (A) of the cycloaliphatic epoxy resin after curing under the preset conditions has a curing exothermic peak between 150 and 250 ° C, and the infrared spectrum (B) is 910 cm -1The appearance of epoxy groups indicates that the curing reaction is no...

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Abstract

The invention discloses a high-voltage-resistant m-ABA-SiO2 / alicyclic epoxy resin nano composite insulating material and a preparation method thereof, and the preparation method comprises the following steps: grafting a voltage stabilizer m-amino benzoic acid on SiO2 nano particles, and introducing the SiO2 nano particles into an alicyclic epoxy resin matrix. In the nano composite insulating material disclosed by the invention, a part of charges are trapped under the interface action of the SiO2 nano particles and the alicyclic epoxy resin, and part of high-energy electrons are captured by amino benzoic acid at the same time, so that the charge distribution condition of a matrix under a certain voltage is improved, and the voltage breakdown resistance strength is improved.

Description

technical field [0001] The invention relates to a high voltage resistant m-ABA-SiO 2 The invention relates to an alicyclic epoxy resin nanocomposite insulating material and a preparation method thereof, which belong to the field of insulation and high voltage resistance. Background technique [0002] The increase in energy demand, the uneven distribution of energy, and the intensification of urban construction require the development of ultra-high voltage, large-capacity power equipment and high-voltage power electronic equipment. These new power equipment face complex insulation requirements. In fact, a sufficiently high electric field will enable electrons inside the insulating material to tunnel from the valence band to the conduction band. These electrons are accelerated by an electric field to collide with other atoms, which then generate ionized electrons through secondary collisions. After the total amount of free electrons exceeds the threshold, electrical breakdow...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/04C08K9/06C08K3/36
CPCC08K9/04C08K9/06C08K3/36C08K2201/011C08L63/00
Inventor 王振洋许海鹰张淑东李年蒋长龙秦毅
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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