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Carbon nano super-hydrophobic water-based paint and preparation method thereof

A water-based coating, super-hydrophobic technology, applied in the direction of polyurea/polyurethane coatings, coatings, climate sustainability, etc., can solve problems such as being unsuitable for industrial production and application, increasing coating roughness, and limited super-hydrophobic effect. To achieve the effect of improving hydrophobic performance, increasing roughness, and increasing hydrophobic performance

Active Publication Date: 2022-07-08
新化县中润化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, only graphene or carbon nanotubes are used to dissipate heat, conduct electricity or increase the roughness of the coating
Even if graphene and carbon nanotubes are used together, it is only a physical mixture, and the superhydrophobic performance is not developed from the hydrophobic properties of graphene and carbon nanotubes, and the superhydrophobic effect is limited and the process is complicated, which is not suitable for industrial production and application

Method used

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  • Carbon nano super-hydrophobic water-based paint and preparation method thereof
  • Carbon nano super-hydrophobic water-based paint and preparation method thereof
  • Carbon nano super-hydrophobic water-based paint and preparation method thereof

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preparation example Construction

[0033] GNS / NH 2 -The preparation method of MWCNT is:

[0034] S1. Add a certain amount of silane coupling agent with amino group and polyvinylamine into a certain amount of ethanol, stir and disperse evenly to obtain a dispersion;

[0035] S2, adding the above-mentioned dispersion liquid to a certain amount of carboxylated multi-walled carbon nanotubes by spraying, heating and stirring at 80°C, and the reaction time is 5-10min to obtain amino-modified carbon nanotubes;

[0036] S3. Add a certain amount of amino-modified carbon nanotubes to a certain concentration of graphene oxide dispersion, and react at 60-80 °C for 1-2 hours to obtain GO / NH 2 -MWCNT;

[0037] S4. Add a certain amount of HI and continue the reaction at 80°C for 0.5-1h to obtain GNS / NH 2 - complexes of MWCNTs.

[0038] The mass fraction of the amino group-bearing silane coupling agent and polyvinylamine in ethanol is 0.4%-1%, and the mixing speed is 10-50r / min.

[0039] The diameter of the amino-modified...

Embodiment 1

[0046] 1. Preparation of GNS / NH 2 -MWCNT:

[0047] S1. Add 0.4%-1% silane coupling agent with amino group and polyvinylamine into a certain amount of ethanol, and the mixing speed is 10-50r / min, and the dispersion is uniformly obtained by stirring and dispersing;

[0048] S2, adding the above-mentioned dispersion liquid to a certain amount of carboxylated multi-walled carbon nanotubes by spraying, heating and stirring at 80°C, and the reaction time is 5-10min to obtain amino-modified carbon nanotubes;

[0049] S3. Add amino-modified carbon nanotubes with a mass concentration of 0.5-2% into a graphene oxide dispersion with a concentration of 0.5%-2%, and react at 60-80 ° C for 1-2 hours to obtain GO / NH 2 -MWCNT;

[0050]

[0051] S4. Add 0.5%-5% HI by mass, and continue the reaction at 80°C for 0.5-1h to obtain GNS / NH 2 - complexes of MWCNTs.

[0052] 2. Preparation of paint:

[0053] Take the above GNS / NH 2 -MWCNT to prepare GNS / NH 2 -MWCNT aqueous dispersion, take GNS...

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Abstract

The invention discloses a carbon nano super-hydrophobic water-based paint and a preparation method thereof, 30-50 parts of GNS / NH2-MWCNT water-based dispersion liquid is taken and added, then 30-40 parts of water-based resin, 1-10 parts of filler, 1-2 parts of anti-settling agent, 0.5-1 part of defoaming agent and 0.5-1 part of wetting agent are added, and stirring is performed at the stirring speed of 100-500 r / min for 0.5-1.5 h to obtain the paint. According to the carbon nano super-hydrophobic water-based paint adopting the structure and the preparation method thereof, the super-hydrophobic performance is realized by adopting the hydrophobic properties of the graphene and the carbon nano tube and a micro-nano structure constructed by the graphene and the carbon nano tube, and the hydrophobic performance is improved without adding other hydrophobic fillers.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a carbon nanometer super-hydrophobic water-based coating and a preparation method thereof. Background technique [0002] Superhydrophobic materials are widely used in anti-corrosion, anti-icing, anti-fogging, self-cleaning, anti-fouling and other fields due to their excellent hydrophobicity and self-cleaning properties. At present, the scientific community and industry have carried out a lot of research work on this type of coating, focusing on the surface energy of the coating, nanoscale surface roughness, coating thickness, mechanical stability and adhesion. Surface energy and nanoscale surface roughness are important indicators of whether the coating can achieve superhydrophobicity. Materials with high surface energy have strong wettability with water and cannot form superhydrophobic surfaces, only materials with low surface energy can form. However, only low su...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D123/34C09D175/04C09D7/62C09D7/61
CPCC09D133/00C09D123/34C09D175/04C09D7/62C09D7/61C08K9/06C08K9/04C08K3/042C08K3/041Y02P20/10
Inventor 张明宁旭涛王鹏颜琪陈振
Owner 新化县中润化学科技有限公司
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