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Room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin and preparation method thereof

A technology of fluorosilicone resin and room temperature curing, which is applied in the direction of coating, etc., and can solve the problems of complex coating forming methods and limited application range

Inactive Publication Date: 2017-12-22
陈晨特
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating forming method prepared by this method is complicated, which limits its application range.

Method used

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  • Room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin and preparation method thereof
  • Room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin and preparation method thereof
  • Room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The room temperature curing superhydrophobic self-cleaning fluorosilicone resin of the present invention has a specific preparation method as follows:

[0023] First, 60 parts of perfluorinated hydrogen-containing polymethylhydrogensiloxane (hydrogen content is 0.8, viscosity 100mPa·s), 4 parts of methacrylic acid-2,2,3,4,4,4-hexafluorobutyl Ester, 10 parts of perfluoro-terminated vinyl polysiloxane (viscosity 200mPa·s), 300 parts of n-heptane were added to the reactor and stirred evenly, heated to 60°C, and then 1.5 parts of Karsted catalyst solution with a concentration of 400ppm were added , react at 60°C for 4 hours, then dropwise add 5 parts of γ-methacryloxypropyltriethoxysilane dropwise, and finish adding dropwise in 1 hour; cool to normal temperature and continue stirring for 2 hours to obtain the Superhydrophobic self-cleaning fluorosilicone.

Embodiment 2

[0025] The room temperature curing superhydrophobic self-cleaning fluorosilicone resin of the present invention has a specific preparation method as follows:

[0026] First, 60 parts of perfluorinated hydrogen-containing polymethylhydrogensiloxane (hydrogen content is 1.6, viscosity 30mPa·s), 6 parts of allyl pentafluorobenzene, 5 parts of perfluoro-terminated vinyl polysiloxane (viscosity 100mPa·s), 300 parts of petroleum ether (boiling range 90-120), add to the reactor and stir evenly, heat to 80°C, then add 0.5 parts of Karsted catalyst solution with a concentration of 100ppm, react at 80°C for 3.5 hours, and then Add 8 parts of γ-methacryloxypropyltrimethoxysilane dropwise, and the dropwise addition is completed within 1 hour; cool to room temperature and continue stirring for 1.5 hours to obtain the superhydrophobic self-cleaning fluorosilicone resin of the present invention.

Embodiment 3

[0028] The room temperature curing superhydrophobic self-cleaning fluorosilicone resin of the present invention has a specific preparation method as follows:

[0029] First, 60 parts of perfluorinated hydrogen-containing polymethylhydrogen siloxane (hydrogen content is 1.2, viscosity 50mPa·s), 8 parts of methacrylic acid-3,3,4,4,5,5,6,6, Add 7,7,8,8,8-tridecafluorooctyl ester, 5 parts of perfluorovinyl polysiloxane (viscosity: 600mPa·s), and 400 parts of cyclohexane into the reactor, stir evenly, and heat to 75°C, then add 1.0 parts of Karsted catalyst solution with a concentration of 300ppm, react at 75°C for 2.5 hours, then add 3 parts of γ-methacryloxypropyl tripropropoxysilane dropwise, dropwise for 1h; cool Continue to stir for 1 hour at room temperature to obtain the superhydrophobic self-cleaning fluorosilicone resin of the present invention.

[0030] Apply the superhydrophobic self-cleaning fluorosilicone resin in the example to the glass surface, about 2g / cm 2 , the...

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Abstract

The invention relates to a room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin, a preparation method and an application thereof. The method comprises the following steps: firstly adding 60 parts of perfluor hydrogen-containing polymethylhydrosiloxane, 4-8 parts of vinyl fluoride-containing monomer, 5-10 parts of perfluoroethylene polysiloxane and 300-400 parts of diluent into a reactor, uniformly stirring and heating to 40-80 DEG C; adding 0.5-1.5 parts of Karsted catalyst solution, reacting for 2-4 hours at 40-80 DEG C and then dropwise adding 3-8 parts of gamma-methylacryloyl propyl-propyl trialkyl silane and completely dropwise adding within 1h; and cooling to room temperature and continuously stirring for 1-2 hours, thereby acquiring the super-hydrophobic self-cleaning fluorosilicone resin disclosed by the invention. The invention has the advantages that (1) the alcoxyl bond is in contact with and crosslinks with air so as to increase the film-forming hardness following the solvent evaporation and curing of the resin under room temperature and the hardness of a pencil can reach up to 3H after fully curing and (2) the resin is compounded from perfluoro polysiloxane and perfluoro vinyl monomer, the contact angle of water on the cured film of the resin is more than 160 degrees and the resin has super-hydrophobicity and a self-cleaning effect.

Description

technical field [0001] The invention relates to a fluorosilicone resin, in particular to a room-temperature-cured superhydrophobic self-cleaning fluorosilicone resin and a preparation method thereof, belonging to the technical field of organosilicon resin synthesis. technical background [0002] In nature, the surface of the lotus leaf has a unique self-cleaning function and can form a large contact angle with the water surface, which is called the lotus leaf effect or super-hydrophobic effect. Since the contact area between the super-hydrophobic surface and water droplets is very small, and the water droplets are easy to roll off the surface, the super-hydrophobic surface not only has the function of self-cleaning, but also has anti-current conduction, anti-corrosion, waterproof, anti-fog, anti-mildew , anti-snow, anti-frost, anti-adhesion, anti-pollution and other functions, so it has broad application prospects in the fields of construction, clothing and textiles, liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/44C09D183/10
CPCC08G77/44C09D183/10
Inventor 陈晨特
Owner 陈晨特
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