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Superhydrophobic composite water-based finish varnish and preparation method thereof

A top varnish, super-hydrophobic technology, applied in chemical instruments and methods, silicone compounds, synthetic resin layered products, etc., can solve the problems of water resistance and scrub resistance of top varnishes, affecting the application performance of water-based top varnishes, etc. , to achieve the effect of strong application and industrialization prospects, transparent appearance, and simple preparation steps

Active Publication Date: 2016-01-27
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for water-based finish varnish, due to the presence of a large amount of surfactant in the formula, the water resistance and scrub resistance of the finish varnish are greatly reduced, which greatly affects the practical application performance of water-based finish varnish

Method used

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  • Superhydrophobic composite water-based finish varnish and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The composition of the water-based finish varnish is: 25.6g of water, 0.4g of pH regulator, 65.0g of emulsion, 0.6g of defoamer, 0.5g of bactericide, 0.2g of anticorrosion and antifungal agent, 3.0g of antifreeze, 4.2g of film-forming aid g, thickener 0.5g. The above components were sequentially added into the reaction kettle, and stirred for 30 minutes at a rotational speed of 1000 r / min to obtain a water-based finish varnish.

[0022] Dissolve 1g of dimethyldimethoxysilane and 10g of methyltrimethoxysilane in 100g of ethanol, mix and stir evenly in a four-neck flask, then add 5ml, 0.001mol / L oxalic acid solution, and stir at medium speed for 30min , hydrolyzed at room temperature for 24h, and then 6ml, 11.2mol / L ammonia water was added dropwise to the reaction mixture, stirred rapidly for 15min, and the gel was aged for 2 days to obtain a superhydrophobic transparent airgel material. Take 5g of the super-hydrophobic transparent airgel material and disperse it in 95g ...

Embodiment 2

[0024] The composition of the water-based finish varnish is: 33.0g of water, 0.3g of pH regulator, 60.0g of emulsion, 0.2g of defoamer, 0.2g of bactericide, 0.5g of anticorrosion and antifungal agent, 3.5g of antifreeze, 2.1g of film-forming aid g, thickener 0.2g. The above components were sequentially added into the reaction kettle, and stirred for 30 minutes at a rotational speed of 1000 r / min to obtain a water-based finish varnish.

[0025] Dissolve 2g of dimethyldimethoxysilane and 10g of methyltrimethoxysilane in 100g of ethanol, mix and stir evenly in a four-neck flask, then add 5ml, 0.001mol / L oxalic acid solution, and stir at a medium speed for 30min , hydrolyzed at room temperature for 24h, and then 6ml, 11.2mol / L ammonia water was added dropwise to the reaction mixture, stirred rapidly for 15min, and the gel was aged for 2 days to obtain a superhydrophobic transparent airgel material. Take 5g of the super-hydrophobic transparent airgel material and disperse it in 95...

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Abstract

The invention discloses a super-hydrophobic composite water-based finish varnish, and a preparation method thereof. The super-hydrophobic composite water-based finish varnish is prepared from prepared super-hydrophobic transparent silica aerogel material coated on the surface of a water-based finish varnish. The super-hydrophobic composite water-based finish varnish not only is transparent in appearance, but also has self-cleaning ability, simultaneously has long-term hydrophobic persistence under an outside environment, so that the super-hydrophobic composite water-based finish varnish can be used as un-scrubbing finish varnish of interior and exterior wall coatings. The super-hydrophobic composite water-based finish varnish prepared by using the method is obvious in effect, simple in production technology, good in construction, free of poison and harm, and high in environmental performance, and has certain practical significance.

Description

technical field [0001] The invention relates to a method for preparing a superhydrophobic transparent airgel material, in particular to a method for preparing a superhydrophobic composite water-based finish varnish with the airgel material. Background technique [0002] In nature, there are a large number of biological surfaces, such as lotus leaves, plants in deserts and geckos, which exhibit superhydrophobic properties (L.Jiang, Y.Zhao, J.Zhai, Angew.Chem.2004,116,4438- 4441; T.S. Kustandi, V.D.Samper, D.K.Yi, et.al. Adv. Funct. Mater. 2007, 17, 2211-221; 8; X. Gao, L. Jiang, Nature, 2004, 432, 36). Under normal circumstances, we call the surface with a water contact angle greater than 150° and a sliding angle less than 5° as a superhydrophobic surface. There are two main types of such superhydrophobic surfaces: (1) with both micro-nano structure and low surface energy (2) Low surface energy surface with porous structure. Both of these surfaces can trap part of the air t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14C09D133/04C09D175/04C09D7/12C09D5/00B32B27/06B32B27/08B32B33/00C01B33/16C07F7/21
Inventor 洪杰张育乾林金斌
Owner SKSHU PAINT