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High-temperature-resistant high-pressure-resistant partial-discharge-free epoxy resin insulating material and preparation method thereof

An epoxy resin and high temperature resistant technology, which is applied in the field of organic composite insulating materials, can solve the problems of excessive partial discharge and insufficient high temperature resistance, and achieve the effects of increased bonding, good high temperature resistance and increased rigidity

Pending Publication Date: 2021-06-11
陕西泰普瑞电工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a high temperature and high pressure resistant organic composite insulating material and its preparation method. The organic composite insulating material produced by using a modified formula is a kind of glass transition temperature greater than 160 degrees, high temperature and high pressure resistance Advanced organic composite insulating materials without partial discharge to improve the existing problems of insufficient high temperature resistance and excessive partial discharge of existing organic composite insulating materials

Method used

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  • High-temperature-resistant high-pressure-resistant partial-discharge-free epoxy resin insulating material and preparation method thereof
  • High-temperature-resistant high-pressure-resistant partial-discharge-free epoxy resin insulating material and preparation method thereof
  • High-temperature-resistant high-pressure-resistant partial-discharge-free epoxy resin insulating material and preparation method thereof

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preparation example Construction

[0046] The invention provides the preparation method of above-mentioned organic composite insulating material, comprising:

[0047] Warm one of E51 epoxy resin or E54 epoxy resin and polyfunctional glycidylamine epoxy resin, then add aluminum hydroxide differential and high-performance kaolin mixed epoxy resin and methyltetrahydrophthalamide Mix the acid anhydride with the accelerator and the hardening agent after mixing the toughening agent, stir evenly, put the stirred rubber into the dipping tank, dip the glass fiber roving through the dipping tank, pass the soaked glass fiber through The pre-forming vacuum device enters the forming mold, and the pre-forming vacuum device assists in vacuuming to remove the glue and the air bubbles and excess glue in the glass fiber roving, and then enters the forming mold to solidify and form to obtain the required insulating material.

[0048] Specific steps are as follows:

[0049] Step 1, put E51 epoxy resin or E54 epoxy resin and glyci...

Embodiment 1

[0064] Step 1, put E51 epoxy resin and glycidylamine type multifunctional epoxy resin into the oven to heat, and set the temperature to 60 degrees.

[0065] Step 2, put the heated E51 epoxy resin and the heated glycidylamine multifunctional epoxy resin in a ratio of 60:40 into a vacuum mixing tank and stir evenly.

[0066] Step 3, putting a certain proportion of aluminum hydroxide micropowder and 5% of the amount of epoxy resin into the stirring tank stirring the epoxy resin and fully stirring evenly.

[0067] Step 4, put a certain proportion of high-quality kaolin and 5% of the amount of epoxy resin into the stirring epoxy resin mixing tank, stir well, and turn on the vacuum pump to vacuum during the stirring process, the vacuum gauge pressure reaches 0.9MPa, stir The good epoxy resin glue is put away for later use.

[0068] Step 5, put methyltetrahydrophthalic anhydride into a vacuum stirring tank, add the accelerator 2,4-dimethylimidazole in a certain proportion, 0.5% of t...

Embodiment 2

[0076] Step 1, put E54 epoxy resin and glycidylamine type multifunctional epoxy resin into an oven to heat, and set the temperature to 70 degrees.

[0077] Step 2, put the heated E54 epoxy resin and the heated glycidylamine type multifunctional epoxy resin in a ratio of 55:45 into a vacuum mixing tank and stir evenly.

[0078] Step 3, putting a certain proportion of aluminum hydroxide micropowder and 8% of the amount of epoxy resin into the stirring tank stirring the epoxy resin and fully stirring evenly.

[0079] Step 4, put a certain proportion of high-quality kaolin and 8% of the amount of epoxy resin into the epoxy resin mixing tank that is being stirred and stir well, and turn on the vacuum pump to vacuum during the stirring process. The vacuum gauge pressure reaches 0.5MPa, and stir The good epoxy resin glue is put away for later use.

[0080] Step 5, put methyltetrahydrophthalic anhydride into a vacuum stirring tank, add the accelerator 2,4-dimethylimidazole in a certa...

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Abstract

The invention discloses a high-temperature-resistant high-pressure-resistant partial-discharge-free organic composite insulating material and a preparation method thereof. The material comprises the following raw materials in percentage by mass: 73-80% of glass fiber twistless roving, 8-10% of epoxy resin, 8-12% of tetrahydrophthalic anhydride, 1-5% of nano aluminum hydroxide and 1-5% of kaolin. The epoxy resin is obtained by compounding bisphenol A type E51 or E54 epoxy resin and glycidyl amine type multifunctional epoxy resin. The organic composite insulating material produced by using the formula is an advanced organic composite insulating material with the glass transition temperature of more than 160 DEG C, high temperature resistance, high pressure resistance and no partial discharge, so that the problems of insufficient high temperature resistance and overlarge partial discharge of the existing organic composite insulating material are solved.

Description

technical field [0001] The invention belongs to the field of organic composite insulating materials, and relates to the production and preparation of insulating materials for high-voltage equipment such as insulators for power transmission and distribution, transformers, lightning arresters, and reactors, and in particular to a high-temperature and high-pressure resistant epoxy resin insulating material without partial discharge and its preparation method. Background technique [0002] Epoxy resin-based organic composite insulating materials are widely used in the field of power transmission and distribution in the power industry because of their high mechanical strength, low curing shrinkage, good stability, excellent electrical insulation performance, and good processability. The rapid development of the industry has also led to the development of the power industry, and the demand for electricity is also increasing. In order to ensure the reliable and safe operation of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L71/00C08K7/14C08K3/22C08K3/34
CPCC08L63/00C08K2003/2227C08K2201/011C08L2205/03C08L2205/025C08L2201/08C08L71/00C08K7/14C08K3/22C08K3/346
Inventor 吴亚民张海潮
Owner 陕西泰普瑞电工技术有限公司
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