Preparation method of nano zinc oxide/epoxy resin composite superhydrophobic coating

A nano-zinc oxide and super-hydrophobic coating technology, applied in the field of materials, can solve the problems that limit the wide application of super-hydrophobic coatings, the inability to form large-scale films, and the complicated preparation process, etc., to achieve anti-corrosion optical properties, light weight, and toughness Good results

Inactive Publication Date: 2017-11-17
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of most superhydrophobic surfaces in the existing reports needs to be carried out under strict laboratory equipment and process control conditions, and the preparation process is complicated, and it is impossible to form large-scale films, which limits the wide application of superhydrophobic coatings in the production field.

Method used

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  • Preparation method of nano zinc oxide/epoxy resin composite superhydrophobic coating
  • Preparation method of nano zinc oxide/epoxy resin composite superhydrophobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the present invention includes the following steps.

[0025] (1) Prepare 100 parts by mass of ethanol / acetone solution with a volume ratio of 1:1; add 2.5 parts by mass of zinc oxide powder with a particle size of 100 nm and 2.5 parts by mass of zinc oxide powder with a particle size of 10 nm in sequence middle; then add 0.001 parts by mass of a low surfactant, and mix and stir for 3 hours to obtain a suspension A.

[0026] (2) Add 2.5 parts by mass of epoxy resin and 10% of the mass of epoxy resin curing agent to suspension A, and oscillate ultrasonically for 10 minutes to form suspension B.

[0027] (3) Use a spray gun to evenly spray the suspension B onto the substrate, and after curing at room temperature for 2 hours, cure at 100°C for 30 minutes to obtain a super-hydrophobic coating with strong stability.

Embodiment 2

[0029] The preparation method of the present invention includes the following steps.

[0030] (1) Prepare 100 parts by mass of ethanol / acetone solution with a volume ratio of 1:1; add 2.0 parts by mass of zinc oxide powder with a particle size of 100 nm and 3.0 parts by mass of zinc oxide powder with a particle size of 10 nm in sequence middle; then add 0.001 parts by mass of a low surfactant, and mix and stir for 3 hours to obtain a suspension A.

[0031] (2) Add 1 part by mass of epoxy resin and 10% of the mass of epoxy resin curing agent to suspension A, and oscillate ultrasonically for 10 minutes to form suspension B.

[0032] (3) Use a spray gun to evenly spray the suspension B onto the substrate, and after curing at room temperature for 2 hours, cure at 100°C for 30 minutes to obtain a super-hydrophobic coating with strong stability.

Embodiment 3

[0034] The preparation method of the present invention includes the following steps.

[0035] (1) Prepare 100 parts by mass of ethanol-acetone solution with a volume ratio of 1:1; add 3.0 parts by mass of zinc oxide powder with a particle size of 100 nm and 2.0 parts by mass of zinc oxide powder with a particle size of 10 nm into the solution in sequence ; Then add 0.001 parts by mass of a low surface energy active agent, mix and stir for 3 hours to obtain a suspension A.

[0036] (2) Add 5 parts by mass of epoxy resin and 10% of the mass of epoxy resin curing agent to suspension A, and oscillate ultrasonically for 10 minutes to form suspension B.

[0037] (3) Use a spray gun to evenly spray the suspension B onto the substrate, and after curing at room temperature for 2 hours, cure at 100°C for 30 minutes to obtain a super-hydrophobic coating with strong stability.

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Abstract

The invention relates to a preparation method of a nano zinc oxide/epoxy resin composite superhydrophobic coating. The preparation method comprises the following steps: 1) preparing 100 parts by mass of ethanol/acetone solution having a volume ratio of 1:1; sequentially adding 1.0-5.0 parts by mass of zinc oxide powder of which the particle diameter is 100nm and 1.0-5.0 parts by mass of zinc oxide powder of which the particle diameter is 10nm into the solution; and adding 0.001 part by mass of low surface energy activator, and performing mixing and stirring for 3 hours to obtain a suspension A; 2) adding 1-5 parts by mass of epoxy resin and a curing agent accounting for 10% of the epoxy resin in mass into the suspension A, and performing ultrasonic oscillation to form a suspension B; and 3) uniformly spraying the suspension B on a substrate, performing normal temperature curing for 2 hours, and performing curing at 100 DEG C for 30 minutes. The preparation method provided by the invention has the advantages of simple process, accessible raw materials and low cost; the coating is favorable in superhydrophobic performance, the water contact angle is 160 degrees or above, and the water roll angle is 10 degrees or below; and the coating is high in mechanical strength, high in adhesion force and long in service life.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a superhydrophobic coating and a preparation method thereof. Background technique [0002] Superhydrophobic surfaces are a class of surfaces with high contact angles (>150°) and low rolling angles (<10°), which are characterized by water resistance and low adhesion. The superhydrophobic phenomenon was first inspired by natural organisms. The lotus leaf that "comes out of the mud without staining" describes this kind of phenomenon, and there are also water striders. Superhydrophobic surfaces have application value in many fields, such as self-cleaning, anti-corrosion, anti-icing, oil-water separation, etc. It is worth mentioning that anti-biological fouling, including anti-protein adhesion, anti-microbial adhesion, etc., in these fields, the application of superhydrophobic surfaces is becoming more and more important. [0003] The preparation of most superhydrophobic surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/00C09D5/08C09D5/14C09D7/12
CPCC08K2003/2296C08K2201/011C09D5/00C09D5/08C09D5/14C09D163/00C08K9/06C08K3/22
Inventor 李长全周浩宇欧军飞薛名山王法军谢蝉曹镇君李文
Owner NANCHANG HANGKONG UNIVERSITY
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