In recent years, superhydrophobic surfaces have been widely accepted as hotspots for research. This article reviews the superhydrophobic

Research progress,

Based on the lotus leaf and the leech as an example,

Discussed the superhydrophobic structure in

The real existence in nature.

In addition, the paper also introduces the principle of contact angle and the connection of contact angle and rough surface.

system,

The microscopic phenomena of wetting and the influencing factors of contact angle are explored.

This article not only introduces super-hydrophilic surfaces

The main preparation methods and related theoretical studies,

It is also reviewed that superhydrophobic materials are resistant to corrosion,

Self-cleaning,

Application in fabrics.

In summary,

At present, research on superhydrophobic materials is in full swing.

Superhydrophobic surface has a very broad

Development prospects. Super-hydrophilic surface materials are still in the research stage before large-scale industrial applications.

higher cost,

Poor durability is a deficiency of this material.

So there is still a lot of room for future generations to go

Explore and discover.

In recent years, superhydrophobic surfaces have been widely accepted as hotspots for research. This article reviews the superhydrophobic

Research progress,

Based on the lotus leaf and the leech as an example,

Discussed the superhydrophobic structure in

The real existence in nature.

In addition, the paper also introduces the principle of contact angle and the connection of contact angle and rough surface.

system,

The microscopic phenomena of wetting and the influencing factors of contact angle are explored.

This article not only introduces super-hydrophilic surfaces

The main preparation methods and related theoretical studies,

It is also reviewed that superhydrophobic materials are resistant to corrosion,

Self-cleaning,

Application in fabrics.

In summary,

At present, research on superhydrophobic materials is in full swing.

Superhydrophobic surface has a very broad

Development prospects. Super-hydrophilic surface materials are still in the research stage before large-scale industrial applications.

higher cost,

Poor durability is a deficiency of this material.

So there is still a lot of room for future generations to go

Explore and discover.

In recent years, superhydrophobic coatings have been widely accepted, and superhydrophobic surface technology has become a research hotspot. The research progress of superhydrophobicity demonstrates the existence of superhydrophobic structure in nature on the basis of introducing lotus leaf and leech as an example. At present, the research of superhydrophobic materials is in full swing, and the superhydrophobic surface has a very broad development prospect. Super-hydrophilic surface materials are still in the research stage before large-scale industrial application. The high cost and poor durability are the shortcomings of this material. There is still a great space to explore and discover, and Shangmeng Technology as a family Based on nanomaterials, it is a high-tech Sino - foreign joint venture that integrates product research and development, processing and industrialization. It has already been at the leading level at home and abroad in terms of super-hydrophobic surface, super-hydrophilic treatment and special coatings.

Application of superhydrophobic materials

4.1

Application of corrosion-resistant metal anti-rust research

The superhydrophobic surface of the metal substrate has corrosion resistance properties.

Because there is a difference between the solid surface and the liquid

Layer air film, so that corrosive ions are difficult to contact the surface of the material.

Liu

Wait

[12]

Super sparse

Water copper surface,

The hydrophobic copper surface and the ordinary copper surface are placed in seawater,

Corrosion experiments were carried out and compared,

through

Through experiments, we can understand that superhydrophobic membranes are real.

The result is a current between the anode and the cathode

The reduction is obvious. The degree of reduction is much greater than that of the hydrophobic surface and the ordinary copper surface, which greatly increases the corrosion resistance.

4.2

Application in self-cleaning research

The most typical superhydrophobic surface in nature is the lotus leaf surface.

Its typical self-cleaning nature can

Call it

"

Lotus effect

”

.

He Cheng equal

[13]

Research on self-cleaning coatings,

Self-cleaning paint by changing

The surface properties of materials such as glass, metal, ceramics, etc., prevent small water droplets from adhering to the surface, thereby achieving self-clearing

Clean effect.

Furstner

Wait

[14]

Sprinkle fluorinated phosphor as a contaminant on superhydrophobic copper and aluminum surfaces.

Start placing it

45

o

,

Spraying a fine mist on the surface, it can be seen that small droplets converge into large drops of water to form strands and remove

Pollutants,

Less than three percent of the copper surface pollutants remain.

The aluminum surface is almost completely removed.

Will then pour

The bevel angle is reduced, and the contaminants on the copper surface can be completely removed even if the spray is slightly inclined.

4.3

Application in fabric research

Superhydrophobic fabrics not only require better water repellency,

That is, it has super hydrophobic properties,

And for people

Life needs to be guaranteed to be non-toxic,

Comfortable nature,

So we can make micro-nano rough structures

Super hydrophobic fabric.

Ma

Wait

[15]

Preparation of polycaprolactone fiber and polystyrene by electrospinning technique

-

Polydimethylene

Siloxane block copolymer fiber,

These two fibers are extremely hydrophobic and have good comfort and protection.

For warmth, this fiber is widely used in self-cleaning functional fabrics and superhydrophobic fabrics.

Application of superhydrophobic materials

1) Anti-corrosion coating application - application in anti-corrosion metal corrosion research

The super-hydrophobic surface of the metal substrate has corrosion-resistant properties because an air film is formed between the solid surface and the liquid, so that corrosive ions are difficult to contact the surface of the material. Liu et al. placed the superhydrophobic copper surface, the hydrophobic copper surface and the ordinary copper surface in seawater. Corrosion experiments were carried out and compared. It is found through experiments that the superhydrophobic membrane is real and the result can be between the anode and the cathode. The current is reduced significantly. The degree of reduction is much greater than that of the hydrophobic surface and the ordinary copper surface, which greatly increases the corrosion resistance.

2) Dust-proof and self-cleaning coating use - application in self-cleaning research

       The most typical superhydrophobic surface in nature is the lotus leaf surface, and its typical self-cleaning property can be called the "leaf effect." He Cheng has conducted research on self-cleaning coatings. Self-cleaning coatings achieve self-cleaning by changing the surface properties of glass, metal, ceramics and other materials to prevent small water droplets from adhering to the surface. Furstner et al. used fluorinated phosphors as contaminants on the surface of super-hydrophobic copper and aluminum. At the beginning, they were placed at 45o, and a fine mist was sprayed on the surface to show that small droplets converge into large drops of water to form strands. With the removal of contaminants, less than three percent of the copper surface contaminants remain, and the aluminum surface is almost completely removed. The tilt angle is then reduced, and even if the spray is slightly inclined, the contaminants on the copper surface can be completely removed.

       3) Application in fabric research

       Superhydrophobic fabrics not only require better water repellency, that is, they have super-hydrophobic properties, but also need to ensure non-toxic and comfortable properties for people's lives, so we can make super-hydrophobic fabrics with micro-nano roughness structure. Ma et al. prepared polycaprolactone fiber and polystyrene-polydimethylsiloxane block copolymer fiber by electrospinning technology. These two fibers have strong hydrophobicity, good comfort and warmth. Sex, this fiber is widely used in self-cleaning functional fabrics and superhydrophobic fabrics.

The super-hydrophobic surface has a very broad application prospect. At present, there has been some development in pipeline transportation, water and anti-fouling of buildings, buoyancy improvement of ships, fabrics, etc., which has also caused the extremes of various research units and industrial bases at home and abroad. Great interest, we are still adhering to innovation-based, customer first, environmental protection and energy saving, and constantly improve our technology to better serve our customers.