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Non-toxic anticorrosive mildew-proof nano coating as well as preparation and application methods thereof

A nano-coating, anti-corrosion and anti-mildew technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as health hazards, achieve low cost, easy operation, and avoid incomplete processing.

Active Publication Date: 2017-05-10
CUBESPACE FURNITURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the reported nano-superhydrophobic coating solvents are volatile organic solvents, which not only pose great harm to human health, but also are difficult to avoid safety hazards in the process of transportation and use.

Method used

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  • Non-toxic anticorrosive mildew-proof nano coating as well as preparation and application methods thereof
  • Non-toxic anticorrosive mildew-proof nano coating as well as preparation and application methods thereof
  • Non-toxic anticorrosive mildew-proof nano coating as well as preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add the ammonia solution to the deionized water solution and adjust the pH value to 8-11, take 100g of the solution, add 60g of tetraethyl orthosilicate dropwise, stir mechanically for 20min, then add 1g of perfluorooctanoic acid dropwise, continue mechanically stirring for 24h, then add 20g Water-based FEVE resin, continue to mechanically stir for 1 hour to obtain a nano-coating, brush the paint on the surface of the wood board and dry it in a 60°C oven for 4 hours to obtain a nano-superhydrophobic coating. figure 1 It is the picture of the water contact angle of the coating, the water contact angle is 158.6°, and the rolling angle is 6.2°.

Embodiment 2

[0035] Add the acetic acid solution to the deionized water solution and adjust the pH value to 4-6, take 1000g of the solution, add 60g of tetraethyl orthosilicate dropwise, stir mechanically for 30min, then add 1g of isobutyltrimethoxysilane dropwise, continue Add 20g of water-based FEVE resin after mechanical stirring for 12 hours, and then continue mechanical stirring for 1 hour to obtain a nano-coating, spray the coating on the surface of the copper sheet and dry it in the natural environment for 12 hours to obtain a nano-superhydrophobic coating. figure 2 Scanning electron micrograph of the coating.

Embodiment 3

[0037] Add the hydrochloric acid solution to the deionized water solution and adjust the pH value to 4-6, take 500g of the solution, add 60g of tetraethyl orthosilicate dropwise, stir mechanically for 10min, then add 1g of methyltriethoxysilane dropwise, continue Add 20g of water-based FEVE resin after mechanical stirring for 48 hours, and then continue mechanical stirring for 2 hours to obtain a nano-coating. Spray the coating on the surface of the floor tiles and dry it in an oven at 80°C for 1 hour to obtain a nano-superhydrophobic coating. Put it in an outdoor environment After 1 year, its surface remains clean without any traces of corrosion and mildew, and it still maintains excellent superhydrophobicity, image 3 The optical photo and its superhydrophobicity after being placed outdoors for one year.

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PUM

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Abstract

The invention relates to a non-toxic anticorrosive mildew-proof nano coating as well as preparation and application methods thereof. The preparation method of the non-toxic anticorrosive mildew-proof nano coating comprises the following steps: adding 6 parts by mass of tetraethyl orthosilicate, 0.1 part by mass of an aqueous hydrophobic treatment agent and 2 parts by mass of aqueous FEVE resin into 10-100 parts by mass of a weak acidic or weak alkaline aqueous solution, and continuously and mechanically stirring to obtain an aqueous super-hydrophobic nano coating. No toxic substance is used and generated in the preparation and application processes of the coating; the coating is non-toxic and environmentally friendly, and can be applied to corrosion prevention and mildew prevention of the surfaces of wood products, bamboo products, clothes, leather products and cement-based materials such as wood support plates and wood boxes for packaging, wood or bamboo cooking utensils, kitchen ware, tea sets, furniture, building wall surfaces and wall corners. The non-toxic anticorrosive mildew-proof nano coating has the characteristics of simple preparation process and equipment, easy operation, low cost and the like, and is suitable for large-scale preparation and industrial production.

Description

technical field [0001] The invention is a non-toxic, anti-corrosion and mildew-proof nano-coating and its preparation and application method, belonging to the technical field of preparation and application of coatings. Background technique [0002] Corrosion and mildew are inevitable problems for human society living in the natural environment. How to effectively prevent the hazards of corrosion and mold has always attracted the attention of experts and scholars in various fields. According to the characteristics of corrosion and mold growth, the contact of the material surface with water or water vapor is one of the most important factors. If we can prevent the material from contacting with water, the anti-corrosion and anti-mildew work on the surface of the material can be easily realized. Therefore, by imitating the super-hydrophobic self-cleaning of lotus leaves in nature, the super-hydrophobic high load of water strider legs, and the super-hydrophobic anti-fogging of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/02C09D127/12C09D7/12C09D7/00C09D5/08C09D5/14
CPCC09D4/06C09D5/08C09D5/14C09D7/20C09D7/63
Inventor 张友法王山林戴文哲余新泉
Owner CUBESPACE FURNITURE
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