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Modified epoxy resin waterproof insulating material, preparation method and application

An epoxy resin, waterproof insulation technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problem of poor waterproof effect of waterproof insulation coatings, cracking and powdering of waterproof insulation coatings, and decreased insulation strength of power equipment, etc. problems, to achieve the effect of easy control of the degree of reaction, excellent waterproof performance, and ideal internal structure

Inactive Publication Date: 2021-05-11
STATE GRID GRID GANSU ELECTRIC POWER CO QINGYANG POWER SUPPLY CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because power facilities such as cable transformers are directly exposed to natural conditions in the field environment, when encountering meteorological conditions such as rain and fog, the surface of the equipment will absorb moisture in the humid air, resulting in a decrease in the adhesion of the insulating coating, and it is waterproof and insulated at low temperatures. The coating is prone to cracking and pulverization, which makes the insulation strength of the power equipment drop sharply, which increases the possibility of accidents and easily causes huge damage to the power equipment.
[0003] In the prior art, traditional waterproof and insulating acrylic coatings need to emulsify monomers by adding emulsifiers and dispersants, and then initiate polymerization of monomers. The preparation process is very complicated, and the degree of reaction is difficult to control, and the prepared waterproof and insulating coatings Poor waterproof effect, difficult to carry out a wide range of applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1, take 5 kg of toluene diisocyanate, add toluene diisocyanate into the reaction kettle, raise the temperature to 50°C, add 15 kg of tridecafluorooctyl alcohol dropwise under stirring, the stirring speed is 180 rpm, add dropwise After the completion of tridecafluorooctyl alcohol, the temperature of the solution in the reactor was raised to 80° C. to continue the reaction for 2 hours to form a mixed solution.

[0027] Step 2, after the temperature of the mixed solution in step 1 is raised to 100°C, add 25 kg of silicone-modified epoxy resin and 100 kg of organic solvent in batches, and continue to react for 2 hours after the addition is completed. Stir at a speed of 1 minute, mix evenly and let stand at room temperature for 24 hours to prepare a fluorine-containing silicone modified epoxy resin solution.

[0028] Step 3: Add 65 kg of unmodified epoxy resin to the fluorine-containing silicone modified epoxy resin solution in step 2, and mix evenly to form a modified ...

Embodiment 2

[0037] Step 1, take 10 kg of toluene diisocyanate, add the toluene diisocyanate into the reaction kettle, raise the temperature to 70°C, add 30 kg of tridecafluorooctyl alcohol dropwise under stirring, the stirring speed is 250 rpm, add dropwise After the completion of tridecafluorooctyl alcohol, the temperature of the solution in the reaction kettle was raised to 90° C. to continue the reaction for 5 hours to form a mixed solution.

[0038] Step 2, after the temperature of the mixed solution in step 1 is raised to 130°C, add 10 kg of silicone-modified epoxy resin and 50 kg of organic solvent in batches, and continue to react for 3 hours after the addition is completed, and at a speed of 350 rpm Stir at a speed of 1 minute, mix evenly, and then stand at room temperature for 21 hours to prepare a fluorine-containing silicone-modified epoxy resin solution.

[0039] Step 3: Add 50 kg of unmodified epoxy resin to the fluorine-containing silicone modified epoxy resin solution in st...

Embodiment 3

[0043] Step 1, take 7 kg of toluene diisocyanate, add toluene diisocyanate into the reaction kettle, raise the temperature to 60 ° C, add 10 kg of tridecafluorooctyl alcohol dropwise under stirring, the stirring speed is 220 rpm, add dropwise After the completion of tridecafluorooctyl alcohol, the temperature of the solution in the reaction kettle was raised to 70° C. to continue the reaction for 8 hours to form a mixed solution.

[0044] Step 2, after the temperature of the mixed solution in step 1 is raised to 90°C, add 30 kg of silicone-modified epoxy resin and 40 kg of organic solvent in batches, and continue to react for 5 hours after the addition is completed, and at a speed of 500 rpm Stir at a speed of 1 minute, mix uniformly, and then stand at room temperature for 15 hours to prepare a fluorine-containing silicone-modified epoxy resin solution.

[0045] Step 3: Add 40 kg of unmodified epoxy resin to the fluorine-containing silicone-modified epoxy resin solution in ste...

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Abstract

The invention discloses a modified epoxy resin waterproof insulating material as well as a preparation method and application thereof. The modified epoxy resin waterproof insulating material is prepared from the following raw materials in parts by weight: 5 to 15 parts of toluene diisocynate, 10 to 30 parts of tridecafluorooctanol, 10 to 40 parts of organic silicon modified epoxy resin, 30 to 80 parts of unmodified epoxy resin, 40 to 100 parts of organic solvent and 2 to 20 parts of epoxy resin curing agent. Long-carbon-chain fluoroalcohol and toluene diisocynate are grafted into an epoxy resin molecular chain through a reaction to obtain modified epoxy resin, then the modified epoxy resin is compounded with unmodified epoxy resin to prepare an epoxy resin-based material with excellent water resistance, the synthesis method is simple and convenient, an emulsifier or a dispersing agent does not need to be introduced, the production continuity is high, and the reaction degree is easy to control. The material is used for equipment such as transformer shells and cables in the power industry, and has the advantages of strong adhesive force, high reliability, corrosion medium resistance, and outstanding ultraviolet resistance, water resistance and aging resistance.

Description

technical field [0001] The invention belongs to the technical field of protection of electrical equipment, in particular to a modified epoxy resin waterproof insulating material, a preparation method and an application. Background technique [0002] Because power facilities such as cable transformers are directly exposed to natural conditions in the field environment, when encountering weather conditions such as rain and fog, the surface of the equipment will absorb moisture in the humid air, resulting in a decrease in the adhesion of the insulating coating, and it is waterproof and insulated at low temperatures. The coating is prone to cracking and pulverization, which makes the insulation strength of the power equipment drop sharply, which increases the possibility of accidents and easily causes huge damage to the power equipment. [0003] In the prior art, traditional waterproof and insulating acrylic coatings need to emulsify monomers by adding emulsifiers and dispersant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/25C09D5/08C08G59/14
CPCC08G59/1477C08L2203/20C08L2205/025C09D5/00C09D5/08C09D163/00C08L63/00
Inventor 李浩峰于德梅胡小兵肖岩
Owner STATE GRID GRID GANSU ELECTRIC POWER CO QINGYANG POWER SUPPLY CO
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