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Preparation method and hydrophobic anti-icing application of POSS (polyhedral oligomeric silsesquioxane) crosslinking modified fluorine-silicon coating

A cross-linking modification and coating technology, applied in the direction of coating, etc., to achieve the effect of simple operation, good hydrophobicity and anti-icing effect

Active Publication Date: 2015-01-14
天津渤化讯创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the present invention, functionalized POSS is used as crosslinking agent, fluoroalkyl polysiloxane and vinyl polysiloxane are used as matrix, and the dispersibility of POSS in polymer is improved by introducing functionalized POSS crosslinking network, thereby constructing Fluorosilicone resin coating with surface micro-nano structure, related content is rarely reported so far

Method used

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  • Preparation method and hydrophobic anti-icing application of POSS (polyhedral oligomeric silsesquioxane) crosslinking modified fluorine-silicon coating
  • Preparation method and hydrophobic anti-icing application of POSS (polyhedral oligomeric silsesquioxane) crosslinking modified fluorine-silicon coating
  • Preparation method and hydrophobic anti-icing application of POSS (polyhedral oligomeric silsesquioxane) crosslinking modified fluorine-silicon coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Synthesis of fluoroalkylpolysiloxane

[0040] Weigh 5.0g polymethylhydrogensiloxane (hydrogen content 0.75wt%), 2.8g hexafluorobutyl methacrylate (Si-H to C=C molar ratio=1:0.3), 31.2g trifluorotoluene (concentration is 20wt%) is added in the 250mL four-neck flask that is equipped with condenser tube, thermometer, blows nitrogen gas 30 minutes and removes the air in bottle completely, is warming up to 30 ℃ under nitrogen protection, adds 50 μ L chloroplatinic acid catalyst (5g / L isopropanol solution, 50ppm), and reacted for 2 hours under slow magnetic stirring. After the temperature of the reactant was stabilized, the temperature was raised to 80°C, and the speed of magnetic stirring was accelerated for constant temperature reaction for 24 hours. After being treated in a vacuum oven at 40°C for 12 hours, the residual solvent and unreacted monomers were completely removed to obtain hexafluorobutyl methacrylate-based polysiloxane, whose structural formula is

[0041]...

Embodiment 2

[0055] (1) Synthesis of fluoroalkylpolysiloxane

[0056] Weigh 5.0g polymethylhydrogensiloxane (hydrogen content 0.75wt%), 4.7g hexafluorobutyl methacrylate (Si-H to C=C molar ratio=1:0.5), 38.8g trifluorotoluene (Concentration is 20wt%) is added in the 250mL four-necked flask that is equipped with condenser tube, thermometer, blows nitrogen gas 30 minutes and removes the air in the bottle completely, under the protection of nitrogen, heats up to 30 ℃, adds 100 μ L Karstedt catalyst (5 g / L isopropyl Alcohol solution, 100ppm), react under slow magnetic stirring for 2h, after the temperature of the reactant is stable, raise the temperature to 80°C, speed up the magnetic stirring speed and keep the temperature for 24h, after the reaction is completed, use a rotary evaporator to remove the reaction solvent, and then pass through a vacuum drying oven After treatment at 40°C for 12 hours, the residual solvent and unreacted monomers are completely removed to obtain hexafluorobutyl me...

Embodiment 3

[0071] (1) Synthesis of fluoroalkylpolysiloxane

[0072] Weigh 5.0g polymethylhydrogensiloxane (hydrogen content 0.75wt%), 8.7g trifluorooctyl methacrylate (Si-H and C=C molar ratio=1:0.5), 54.8g trifluoro Add toluene (concentration is 20wt%) in the 250mL four-necked flask that is equipped with condensing tube, thermometer, pass nitrogen gas for 30 minutes to remove the air in the bottle, heat up to 40 ℃ under the protection of nitrogen, add 150 μ L chloroplatinic acid catalyst (5g / L of tetrahydrofuran solution, 150ppm), reacted under slow magnetic stirring for 3h, after the temperature of the reactant was stabilized, the temperature was raised to 100°C, and the speed of magnetic stirring was accelerated for constant temperature reaction for 24h. After treatment at 70°C in a drying oven for 24 hours, the residual solvent and unreacted monomers were completely removed to obtain trifluorooctyl methacrylate polysiloxane, whose structural formula is

[0073]

[0074] Wherein ...

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Abstract

The invention provides a preparation method and hydrophobic anti-icing application of a polyhedral oligomeric silsesquioxane (POSS)-containing crosslinking modified fluorine-silicon coating. The coating mainly involves a matrix component A fluoroalkyl polysiloxane, a matrix component B vinyl polysiloxane and a crosslinking reinforcer functional POSS, wherein the fluoroalkyl side chain can obviously change the hydrophobicity and lipophobicity of the coating, and the siloxane chain segment and the POSS are beneficial to reduce the water contact angle hysteresis of the coating. At low temperature, the fluoroalkyl chain exhibits rigidity, while the siloxane chain segment exhibits flexibility, so that the formed POSS crosslinking modified fluorine-silicon coating reduces adhesion to ice under the synergetic effect of fluorine and silicon, and the ice is easy to fall from the surface of the coating under the action of a small external force. According to the invention, the POSS crosslinking modified fluorine-silicon coating has low surface energy, water contact angle hysteresis and ice shear strength, and can be used in the field of hydrophobic and anti-icing coatings.

Description

technical field [0001] The invention relates to a preparation method of a POSS cross-linked modified fluorosilicon anti-icing coating, which belongs to the technical field of hydrophobic and anti-icing coatings and applications. Background technique [0002] The phenomenon of icing and frosting has always seriously affected the development of society and the normal life of human beings. The adhesion and accumulation of ice will cause varying degrees of damage to outdoor equipment such as electronic communication towers, transmission line systems, submarine pipelines, turbines, windmills, etc. Destroying and affecting its normal operation will also cause slippery roads and cause traffic accidents, and even cause aircraft crashes and crashes. [0003] Since the 1950s, the problem of icing and frosting has begun to attract the attention of the scientific community, and research on deicing and anti-icing methods has gradually begun. At present, there are mainly two types. The f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D183/07C09D7/12
Inventor 袁晓燕罗程皞陶超朱孔营赵蕴慧李晓晖
Owner 天津渤化讯创科技有限公司
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