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Room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and preparation method and application

A technology of silsesquioxane and silsesquioxane, which is applied in the direction of coatings and silicon organic compounds, and can solve the problems of reducing the ice adhesion strength of coatings

Active Publication Date: 2016-02-10
天津绿缘环保工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fluorinated cage silsesquioxane can be evenly dispersed in the coating, which can not only improve the hydrophobicity of the coating, but also reduce the ice adhesion strength of the coating; in addition, because the fluorinated cage silsesquioxane and fluorosilicon The polymers form a cross-linked network through covalent bonds, and its surface microstructure will not be destroyed after being subjected to multiple icing / deicing processes, so far there are few reports on the relevant content

Method used

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  • Room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and preparation method and application
  • Room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and preparation method and application
  • Room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of fluorosilicone resin. Dissolve 1.5g of hydrogen-containing silicone oil (hydrogen content 0.75wt%, molecular weight 2000g / mol) and 0.8g of hexafluorobutyl methacrylate (the molar ratio of Si-H to C=C is 1:0.3) in 9.2g In trifluorotoluene, 0.23 mg of chloroplatinic acid catalyst was added under the protection of nitrogen, the temperature was raised to 80° C., and the reaction was stirred for 6 h, then 1.7 g of vinyltriethoxysilane was added into the reaction system, and the reaction was continued for 12 h. After the reaction, the crude product was rotary evaporated to remove the solvent, and dried in a vacuum oven at 40°C for one day to remove the residual solvent and unreacted monomer to obtain the target product, whose structural formula is:

[0034]

[0035] In the formula, m=10, p / q=0.4, p=5.

[0036] (2) Preparation of fluorinated cage silsesquioxane. Dissolve 0.5 g of dimethylsilyl cage silsesquioxane in 2.0 g of anhydrous toluene, and add 0...

Embodiment 2

[0040] (1) Preparation of fluorosilicone resin. Dissolve 1.5g of hydrogen-containing silicone oil (hydrogen content 0.75wt%, molecular weight 2000g / mol) and 2.7g of dodecafluoroheptyl methacrylate (the molar ratio of Si-H to C=C is 1:0.6) in 16.8 In g trifluorotoluene, 0.42 mg of chloroplatinic acid catalyst was added under the protection of nitrogen, the temperature was raised to 80° C., and the reaction was stirred for 12 h, then 1.1 g of vinyltriethoxysilane was added to the reaction system, and the reaction was continued for 10 h. After the reaction, the crude product was rotary evaporated to remove the solvent, and dried in a vacuum oven at 40°C for one day to remove the residual solvent and unreacted monomer to obtain the target product, whose structural formula is:

[0041]

[0042] In the formula, m=10, p / q=2, p=10.

[0043] (2) Preparation of fluorinated cage silsesquioxane. Dissolve 0.5g of dimethylsilyl cage silsesquioxane in 2.0g of anhydrous toluene, add 0.59...

Embodiment 3

[0047] (1) Preparation of fluorosilicone resin. Dissolve 1.5g of hydrogen-containing silicone oil (hydrogen content 0.75wt%, molecular weight 2000g / mol) and 4.4g of trifluorooctyl methacrylate (the molar ratio of Si-H to C=C is 1:0.9) in 23.6 In g trifluorotoluene, 0.59 mg of chloroplatinic acid catalyst was added under the protection of nitrogen, the temperature was raised to 80° C., and the reaction was stirred for 14 hours, then 0.4 g of vinyltriethoxysilane was added to the reaction system, and the reaction was continued for 8 hours. After the reaction, the crude product was rotary evaporated to remove the solvent, and dried in a vacuum oven at 40°C for one day to remove the residual solvent and unreacted monomer to obtain the target product, whose structural formula is:

[0048]

[0049] In the formula, m=10, p / q=9, p=14.

[0050] (2) Preparation of fluorinated cage silsesquioxane. Dissolve 0.5g of dimethylsilyl cage silsesquioxane in 2.0g of anhydrous toluene, and a...

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Abstract

The invention discloses a room-temperature-cured fluorine-silicone coating containing fluorinated cage-shaped silsesquioxane and a preparation method and application. The coating is prepared from, by mass, 69%-95% of condensed type fluorine-silicone resin, 5%-30% of the fluorinated cage-shaped silsesquioxane and 0.5% of dibutyltin dilaurate. The fluorine-silicone resin and the fluorinated cage-shaped silsesquioxane are hydrolyzed through oxethyl functional groups contained by the fluorine-silicone resin and the fluorinated cage-shaped silsesquioxane, and dealcoholization condensation is performed under the action of a catalyst to form the coating; the fluorine-containing groups can be gathered on the surface of the coating in the film forming process, therefore, the surface energy of the coating can be reduced, and the hydrophobic and oleophobic properties are improved; the synergistic effect of fluorine and silicone in the coating is beneficial for lowering the adhesive strength of ice on the surface of the coating, the contact angle of coating water reaches 124.5 degrees, and the minimum shearing strength of the ice is 82 kPa; adding of the fluorinated cage-shaped silsesquioxane is beneficial for improving the hydrophobic property and anti-icing property of the coating. The coating can be applied to the field of anti-icing coating materials.

Description

technical field [0001] The invention relates to the synthesis of fluorinated cage-type silsesquioxane and condensation-type fluorosilicone resin and the preparation of a room-temperature-cured fluorosilicon anti-icing coating, which belongs to the preparation of fluorosilicon resin coatings and hydrophobic and anti-icing coatings layer material field. Background technique [0002] The adhesion and accumulation of ice on the surface of the material will bring a lot of inconvenience to people's production and life, and even threaten the safety of life and property, causing huge economic losses. The impact of icing involves many fields such as aviation, communication, electric power and transportation. Therefore, it is of great practical significance to develop low-cost and high-efficiency anti-icing coating products. [0003] Anti-icing coatings mainly include superhydrophobic coatings, sacrificial coatings and low surface energy coatings. Among them, the stability of superh...

Claims

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Application Information

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IPC IPC(8): C09D183/08C09D7/12C08G77/385C08G77/38C07F7/21
Inventor 袁晓燕李彦才赵蕴慧李晓晖朱孔营
Owner 天津绿缘环保工程股份有限公司
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