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High-adhesion waterproof coating for insulating tape

An insulating tape and coating technology, applied in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor adhesion and water resistance, avoid excessive crosslinking, improve adhesion performance, The effect of improving hydrophobicity

Inactive Publication Date: 2019-12-03
罗苗苗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-adhesion and water-resistant coating for insulating tape in view of the poor adhesion and water resistance of commonly used insulating tape coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of composite water-resistant component A comprises the steps:

[0033](1) At 20~35℃, mix methanol and isopropanol in a container according to the mass ratio of 1:3~6, add fluoroboric acid with 3~6% methanol mass, and mix with water with 12~20% methanol mass, and mix with 350 ~550r / min magnetic stirring for 40~60min, adding epoxidized soybean oil with 70~90% methanol quality and mixing, raising the temperature to 55~70℃, stirring with 500~800r / min magnetic force for 1~3h to get the mixture, take the mixture Extract with ethyl acetate 2 to 3 times the mass of the mixture, collect the organic phase and evaporate the solvent in a rotary evaporator at 60 to 75°C to obtain an alcohol oil product, which is set aside;

[0034] (2) At 20~25°C, take the silicon-containing treatment material and add tetrahydrofuran at a mass ratio of 1:10~14 to mix, protect with nitrogen, stir magnetically at 500~800r / min for 35~55min, add 1~4% tetrahydrofuran Mix glacial a...

Embodiment 1

[0039] Catalyst: add stannous octoate and isophorone diisocyanate at a mass ratio of 1:15 and mix to obtain a catalyst.

[0040] Chain extender: Mix sorbitol and 1,4-butanediol at a mass ratio of 2:1 to obtain a chain extender.

[0041] Silicon-containing treatment material: at 25°C, mix phenyltrimethoxysilane and 25% NaOH solution isopropanol in a reaction kettle at a mass ratio of 10:4:45, stir magnetically at 400r / min for 40min, and heat up To 65°C, nitrogen protection, heat preservation and reflux for 3h, naturally cool to room temperature, stir with 500r / min magnetic force for 4h, evaporate under reduced pressure at 45°C to remove the solvent, move to a drying oven and dry at 65°C for 8h to obtain the silicon-containing treatment material .

[0042] Impregnation solution: Mix 20% sodium carbonate solution and 2g / L dopamine solution at a mass ratio of 3:14 to obtain the impregnation solution.

[0043] Additives: Mix talcum powder, sodium polyphosphate and ferrocene in a ...

Embodiment 2

[0053] Catalyst: Add stannous octoate and isophorone diisocyanate at a mass ratio of 1:25 to get the catalyst.

[0054] Chain extender: Mix sorbitol and 1,4-butanediol at a mass ratio of 4:1 to obtain a chain extender.

[0055] Silicon-containing treatment material: at 35°C, mix phenyltrimethoxysilane and 25% NaOH solution isopropanol in a reaction kettle at a mass ratio of 10:7:55, stir magnetically at 700r / min for 60min, and heat up To 75°C, nitrogen protection, heat preservation and reflux for 5h, naturally cool to room temperature, stir with 800r / min magnetic force for 7h, evaporate under reduced pressure at 60°C to remove the solvent, move to a drying oven and dry at 80°C for 12h to obtain the silicon-containing treatment material .

[0056] Impregnation solution: Mix 20% sodium carbonate solution and 2g / L dopamine solution at a mass ratio of 6:14 to obtain the impregnation solution.

[0057] Additive: Mix talcum powder, sodium polyphosphate and ferrocene in a mass rati...

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PUM

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Abstract

The invention discloses a high-adhesion waterproof coating for insulating tapes, and belongs to the field of coating preparation. Methanol and isopropanol are used as raw materials to be subjected toring opening treatment under action of water and fluoboric acid to form an epoxidized soybean oil-based alcoholate, and a polyhedral oligomeric silsesquioxane structure is embedded, so that adhesiveness of viscous substances is improved from an internal structure, and response to external impact is strengthened. In addition, the contact angle is increased and water resistance is improved in macromolecular bond energy action, bond angle change, polymer chain segment movement and rearrangement processes. Glass fibers are modified, bonding performance with resin macromolecules and the like is improved through a silane coupling agent, and chemical bonding is formed on a bonding interface. Through the self-oxidation polymerization effect provided by dopamine liquid, a part of oxidized groups and non-oxidized parts are cross-linked to form a macromolecular reticular polymer aggregate, so that adhesion stability and water resistance are improved. The invention solves the problems of poor adhesion and poor water resistance of a common insulating tape coating at present.

Description

technical field [0001] The invention relates to a high-adhesion water-resistant paint for insulating adhesive tape, which belongs to the field of paint preparation. Background technique [0002] The so-called insulating coating refers to the coating with good electrical insulation properties, which is a kind of functional coating. It has a wide range of applications and is an important branch of insulating materials. Its function is to make the surface of the substrate non-conductive and reduce the incidence of accidents. [0003] Early insulating coatings were made of natural raw materials such as asphalt, dry oil, natural cellulose, etc., but they were not resistant to high temperatures. Since the 1950s, with the development of the polymer industry, a large number of synthetic resins have been produced, so that the development of insulating coatings has abundant raw materials, and heat-resistant polymers have gradually been successfully developed, enabling high-temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00C09D183/04C09D161/06C09D7/61C09D7/62C09D7/63
CPCC08L2205/035C09D175/04C09D7/61C09D7/62C09D7/63C09D7/70C08L63/00C08L83/04C08L61/06C08K9/06C08K9/04C08K7/14C08K5/17C08K7/26
Inventor 罗苗苗
Owner 罗苗苗
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