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Preparation method of high strength superhydrophobic coating

A super-hydrophobic coating and strength technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problem of not launching products

Inactive Publication Date: 2014-09-17
无锡市耐密特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since Kao Corporation of Japan prepared super-hydrophobic surfaces for the first time in 1996, this technology has been continuously reported. Especially in the past ten years, research reports on super-hydrophobic technology have shown rapid progress, and a large number of research documents have been reported in important foreign journals, etc., but The superhydrophobic coating whose mechanical strength reaches the use value is currently being developed by a few laboratories in the world, but none of them have launched related products

Method used

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  • Preparation method of high strength superhydrophobic coating
  • Preparation method of high strength superhydrophobic coating
  • Preparation method of high strength superhydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 5g of silica nanoparticles in a single-necked flask with a particle size of 30nm, 0.48g of silane coupling agent tetraethoxysilane, 11.2g of fluorocarbon resin containing low surface energy functional groups FY- F534, 0.3g of silane coupling agent dodecylsilane and 5.2g of fluororesin CC2-2 of Jiaxing Kairui Company are dispersed in 75.17g of solvent butyl acetate. The solvent is a conventional single solvent or a mixed solvent, and butyl acetate is selected in this embodiment. Add 0.05g catalyst dibutyltin dilaurate, stir at room temperature of 25°C for 4 hours, modify the surface of nanoparticles with low surface energy functional groups through condensation reaction, and obtain superhydrophobic silica nanoparticle sol.

[0018] Take 10g of modified nanoparticle sol and 2.89g of acrylic resin A-851 of Lihua Group containing hydroxyl groups and stir evenly at 30°C, mix 0.77g of curing agent isocyanate Bayer N3390, and then add 0.28g of anti-settling agent BYK Compa...

Embodiment 2

[0023] Add 5g silica nanoparticles in the single-necked flask, the particle size is 30nm, 0.45g silane coupling agent methyltriethoxysilane, 12.84g fluororesin CC1-1 of Jiaxing Kairui Company containing low surface energy functional groups, 5.76g of Sinochem Taicang's fluororesin containing low surface functional groups was dispersed in 75g of solvent, the solvent was a conventional single solvent or mixed solvent, the mixture of butyl acetate and xylene was used in this example, and 0.05g of catalyst dibutyl was added base tin dilaurate, stirred at room temperature of 25°C for 4 hours, and modified low surface energy functional groups on the surface of nanoparticles by condensation reaction to obtain superhydrophobic silica sol.

[0024] Add 5.07g of micron-sized clay particles with a particle size of 1-2um in a single-necked flask, 12.5g of fluororesin CC1-1 from Jiaxing Kairui Company, 5.6g of fluororesin containing Sinochem Taicang dispersed in 75g of butyl acetate and In ...

Embodiment 3

[0030] Add 5g of silica nanoparticles in a single-necked flask, particle size is 30nm, 0.5g of silane coupling agent tetraethoxysilane, 12g of fluorocarbon resin CC1-1 of Jiaxing Kairui Company containing low surface energy functional groups, 0.3g of silane coupling agent dodecylsilane and 5.5g of fluorocarbon resin CC2-2 from Jiaxing Kairui Company were dispersed in 75.17g of solvent. The solvent is a conventional single solvent or a mixed solvent, and butyl acetate is selected in this embodiment. Add 0.05g catalyst dibutyltin dilaurate, stir at room temperature of 25°C for 4 hours, modify the surface of nanoparticles with low surface energy functional groups through condensation reaction, and obtain superhydrophobic silica nanoparticle sol.

[0031] Take 10g of the above-mentioned silica sol and 2.9g of saturated polyester resin 327C containing Miki Group and stir evenly at 30°C, mix with 0.75g of curing agent Miki Group’s amino resin 5717, and then add 0.28 g of BYK’s anti-...

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Abstract

The invention discloses a preparation method of a high strength superhydrophobic coating; nano particles or nano and micron mixed particles are dissolved in an organic solvent, materials containing low surface energy functional groups and a silane coupling agent are used for low surface energy treatment of the particles under the effect of a catalyst; acrylic resin is dissolved in the organic solvent, then the treated particles are added, and under the effect of a curing agent, the particles are mixed and stirred for even dispersion, and then is sprayed to prepare the superhydrophobic coating. According to the method, commonly used fluororesin and other low surface energy materials are used, the superhydrophobic performance can be further improved by repair of unfinished hydrophilic groups of the materials in the components, the fluororesin can be used for modifying silica single molecules and the like to increase the durability of the superhydrophobic performance, the acrylic resin with high mechanical properties, good adhesion and good weatherability is used as matrix resin, and then chemically modified particles are bound to the matrix resin to prepare the coating with better mechanical strength.

Description

technical field [0001] The invention relates to a preparation method of a nano-coating, more particularly to a preparation method of a high-strength super-hydrophobic nano-coating. Background technique [0002] Superhydrophobic surface refers to the surface of the base material with a static contact angle of more than 150° and a rolling angle of less than 10°. This surface phenomenon exists widely in nature, such as lotus leaves and water strider legs. Hydrophobic, with strong self-cleaning ability to dirt and dust. Since Kao Corporation of Japan prepared super-hydrophobic surface for the first time in 1996, this technology has been continuously reported, especially in the past ten years, the research reports on super-hydrophobic technology have shown rapid progress, and a large number of research documents have been reported in important foreign journals, etc., but The superhydrophobic coating whose mechanical strength reaches the use value is currently being developed by ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D167/00C09D161/20C09D7/12
Inventor 杨得全丁尊良
Owner 无锡市耐密特新材料有限公司
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