The fingerprint-resistant stainless steel plate is easy to clean, why?
We know that if ordinary stainless steel plate is pressed by hand, it will leave obvious marks on the stainless steel surface and will not be easy to clean.
So why is the stainless steel anti-fingerprint plate resistant to fingerprints and easier to clean?
What is the principle?
First of all, the anti-fingerprint effect is not that the fingerprint cannot be printed on the surface of stainless steel, but that the fingerprint is shallower than the ordinary surface of stainless steel and is relatively easy to clean, and There will be no residual stains after cleaning.
The anti-fingerprint effect is achieved by coating a film of hydrophobic material on the surface to make it have characteristics that make it difficult for stains to adhere like lotus leaves.
The stickers will not be able to stay and spread on its surface so as to achieve the anti-fingerprint effect.
The adhesive cannot stay on the surface and spread, which is an important factor in achieving fingerprint resistance.
To make the adhesive difficult to settle and spread on the surface involves the problem of reducing the surface tension of the contact surface.
Surface tension is a manifestation of molecular force, which is generated between the contact edges of liquid and gas when they come into contact, and is determined by the special situation of liquid molecules in the surface layer.
Due to the effect of surface tension, the surface of the liquid always tends to shrink as much as possible (the pressure around the liquid is consistent and tends to be the same point), so small droplets in the air tend to be spherical.
In short, the role of surface tension is to make the liquid surface tend to shrink, which is related to the nature of the liquid and has nothing to do with the size of the liquid surface.
Surface tension can also be considered as the surface free energy, which can be roughly considered as the active state of the surface.
The greater the surface tension, the greater the surface energy. It can also be considered that the more active the surface, the easier it will be to adhere to other objects.
Generally, the surface of organic products and polymers is a low-energy surface, which is difficult to adhere.
Inorganic salts, such as oxides, are high-energy and easy-to-adhere surfaces.
To achieve fingerprint resistance, a layer of film is coated to reduce the surface tension of the surface, making it difficult for fingerprints, sweat, etc. to adhere.
Before painting, the surface of stainless steel should be treated, such as degreasing, using weak alkaline cleaning agent or solvent to remove oil, water and other stains on the surface of the substrate.
It is better to phosphatize to increase adhesion.
After painting, it can be cured at a suitable temperature (fingerprint resistant paint from different manufacturers will be different)
Another method is the sanding process, which essentially reduces the contact area of fingerprints.
