Ultra-discharging water-soluble fluor-silicon-acrylic coatings with nano particles

A water-based fluorosilicone and nanoparticle technology, which is applied in coatings, latex paints, etc., can solve the problems of high prices and achieve the effects of low cost, wide sources, and easy cost

Inactive Publication Date: 2008-11-19
胡硕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such high temperature conditions still pose challenges to its industrial production, and polyphenylene sulfide is also an expensive engineering plastic, but it is still a very promising method
But it can be said that so far, there is still no coating product that can be applied to large-scale production and construction, and is low-cost and environmentally friendly to achieve this super-hydrophobic surface performance.

Method used

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  • Ultra-discharging water-soluble fluor-silicon-acrylic coatings with nano particles
  • Ultra-discharging water-soluble fluor-silicon-acrylic coatings with nano particles
  • Ultra-discharging water-soluble fluor-silicon-acrylic coatings with nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Mix 15g deionized water, 10g silicon acrylic emulsion (solid content 35%), 7g polytetrafluoroethylene emulsion (solid content 55%), 3g nano silicon dioxide aqueous dispersion (diameter 5nm, solid content 15%) under stirring and 2g of ammonium bicarbonate, adjust the pH of the mixture to 8-10 with concentrated hydrochloric acid, and stir evenly to obtain a superhydrophobic water-based fluorosilicone-acrylic coating containing nanoparticles.

[0037] Thoroughly stir the coating prepared above, apply the coating evenly on the glass surface with a wet film preparation device with a thickness of 90 microns, and dry it at 80° C. for 15 minutes. The resulting white coating is a superhydrophobic water-based fluorosilicone coating (see figure 1 and figure 2 ). From figure 1 and figure 2 We can see that the surface of the superhydrophobic hydrofluorosilicone acrylic coating has a micro-nano binary structure, and there are particles of 120 to 130 nanometers on the nanometer s...

Embodiment 2

[0040] Mix 15g deionized water, 15g silicon acrylic emulsion (solid content 35%), 9g tetrafluoroethylene and perfluorovinyl ether copolymer emulsion (solid content 50%), 1g nano-titanium dioxide (diameter 15nm) and 2g carbonic acid under stirring ammonium hydrogen, adjust the pH of the mixture to 8-10 with concentrated hydrochloric acid, and stir evenly to obtain a super-hydrophobic water-based fluorosilicone-acrylic coating containing nanoparticles.

[0041] Thoroughly stir the coating prepared above, apply the coating evenly on the surface of polyethylene terephthalate (PET) with a wet film preparation device with a thickness of 90 microns, and dry it at 50°C for 15 hours, and the obtained white coating is Superhydrophobic water-based fluorosilicone coating. The wettability of the coating surface was tested with a contact angle tester, and the result showed that the contact angle between the surface and water was 152±2°, and the rolling angle was 4±1°.

Embodiment 3

[0043] Mix 15g deionized water, 8g silicon acrylic emulsion (solid content 35%), copolymer emulsion (solid content 58%) of 12g tetrafluoroethylene and hexafluoropropylene, 4g nano silicon dioxide aqueous dispersion liquid (diameter 4nm) under stirring. , solid content 15%) and 3g of ammonium bicarbonate, adjust the pH value of the mixture to 7-9 with concentrated hydrochloric acid, and stir evenly to obtain a super-hydrophobic water-based fluorosilicone-acrylic coating containing nanoparticles.

[0044] Thoroughly stir the paint prepared above, apply the paint evenly on the surface of the stainless steel plate with a 90-micron thick wet film maker, and dry it at 80°C for 15 minutes. The white coating obtained is the superhydrophobic water-based fluorosilicone coating. The wettability of the coating surface was tested with a contact angle tester, and the result showed that the contact angle between the surface and water was 153±2°, and the rolling angle was 3±2°.

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Abstract

The invention discloses a super-hydrophobic water fluorine silicone/acrylic paint containing nanoparticles. The paint is prepared by mixing the compositions by weight percentage: 30 to 65 percent of water, 10 to 40 percent of silicone-acrylate emulsion, 10 to 40 percent of water fluoro-polymer emulsion, 1 to 10 percent of nano-meter oxid particles, 1 to 15 percent of inorganic hole compound and a small quantity of inorganic acid used for adjusting the pH value. The invention also discloses a super-hydrophobic water fluorine silicone/acrylic coating prepared by the paint. The water static wrapping angle of the coating is more than 150 degrees and a rolling angle is lower than 5 degrees. The coating prepared by the paint has the advantages of super-hydrophobicity, excellent mechanical property and easy process, etc. and has the self-cleaning function similar to a lotus leaf.

Description

technical field [0001] The invention relates to a coating composition, in particular to a water-based fluorosilicone-acrylic coating containing nanoparticles. Background technique [0002] With the continuous development of my country's economy, the building and its supporting decoration industry have simultaneously entered an era of unprecedented rapid development. Chinese people regard architecture as a century-old project and require durable exterior wall decoration. They generally emphasize the importance of weather resistance and durability of exterior wall coatings. In fact, as a decorative coating for exterior walls, stain resistance and weather resistance are two aspects of a problem, which are equally important. If the coating has good weather resistance but poor stain resistance, even if the coating does not fall off for a hundred years, the building will soon become dirty and obsolete, which cannot reflect the decorative effect of the paint on the building; simil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D127/18C09D7/12C09D5/02
Inventor 胡硕
Owner 胡硕
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