this morning, Love to play computer games Published《 Can toothpaste repair scratches on the mobile phone screen? 》This article analyzed why toothpaste could not repair the tiny scratches on the mobile phone screen. Some enthusiastic netizens also told Xiaoji that there was a "screen scratch repair paste" on Taobao, and gave examples of car beauty scratch repair and "disc scratch repair fluid". So, can these things be used to repair mobile phone screens?
Let's first understand the principle of car beauty shop to repair car scratches. There are two main ways to repair scratches on cars: sealing glaze and coating.
First look at the sealing glaze. Seal glaze finger Using soft wool or sponge to pass through the high-speed vibration and friction of the vibration polishing machine, and using the unique permeability and adhesion of the glaze, the glaze molecules can penetrate into the vehicle surface and the gaps in the paint (Via Baidu Baike). In fact, it is equivalent to forming a tight mesh protective layer on the vehicle paint surface, so as to achieve the purpose of protecting the paint surface. The steps of glaze sealing generally include five steps: neutral cleaning, clay polishing, deep cleaning, vibro polishing and glaze sealing, and dust-free polishing, which need to be carried out with special machines, such as the following description of "vibro polishing and glaze sealing":
The high-frequency vibration of the glaze sealer 7000 times/minute can form a mesh protective film with high strength, high brightness and abrasion resistance on the paint surface. Under the extrusion of the special vibrating polishing machine, through high-frequency vibration, the bright glaze is deeply pressed into the pores of the car paint, forming a solid mesh protective layer, which is attached to the surface of the car paint. (Via Baidu Encyclopedia)
It is worth mentioning that the term "glaze" refers to the thin glass like layer fused on the surface of ceramic products, which is After a high temperature of 2000 degrees, a shiny and hard film is formed by sintering, The "sealing glaze" of car beauty is just a simple treatment on the paint surface, which is impossible to achieve such effect. In fact, the "glaze" borrowed from car beauty is only a kind of oil by-product It has the characteristics of acid resistance, corrosion resistance, high temperature resistance, abrasion resistance, water washing resistance, strong penetration, strong adhesion, high gloss, etc antioxidant. The car sealing is just a propaganda concept, which is separated from the ordinary and relatively inexpensive waxing service. Even so, the "seal glaze" also needs about 7000 times of high-speed polishing every minute to fix it on the paint surface. If the so-called "glaze" can be fixed on the screen surface only by manual polishing, I'm afraid it has long been pulled away by the power mechanism for research.
Glaze sealing is not reliable. What about coating? In fact, many of our mobile phone screens are coated, so can we repair them by coating? Unfortunately, by looking up relevant information, we found that the coating on glass technology is not the same as that on car beauty:
1) Coated glass is to coat one or more layers of metal, alloy or metal compound films on the glass surface to change the optical properties of the glass and meet certain specific requirements. The coating methods are generally divided into two categories, one is physical coating under vacuum conditions (vacuum magnetron sputtering, vacuum evaporation, etc.), the other is chemical coating under atmospheric conditions (chemical vapor deposition, sol-gel, etc.), both of which require relatively strict conditions;
2) The coating in car beauty uses the principle that some liquid materials with chemical activity can quickly polymerize under ultraviolet light and solidify into solid materials in a very short time. At present, glass cellulose with polysiloxane as the main component is mostly used, and the main component of the protective film formed is silicon dioxide. This protective film has the same composition as the familiar glass, But it is not real glass, but it is also called glass coating.
The principle of coating is similar to that of sealing glaze, which is to form a protective layer on the surface of car paint. The difference is that the coating is attached by gentle smearing and wiping, and the molecular binding force of the film itself is attached to the paint surface to avoid damage to the car paint. Before formal coating, in order to remove scratches on the car paint, it is also necessary to polish and polish the car paint surface with a high-speed machine. Therefore, the real role of removing scratches is "polishing", not the coating itself.
It can be seen from this that the scratch repair in car beauty is not the same thing as the scratch repair on the mobile phone screen, and it can't be confused. So, what are those "repair creams" and "repair fluids" sold on Taobao? We searched Taobao for similar products, and the results are as follows:
In fact, these products are organic glass polishing paste. Perspex gets its name from its good light transmission characteristics similar to glass, and it is also easy to process, so it is widely used. Although the name has the word "glass", it is not real glass, and its hardness is also low. Perspex polishing paste can polish Perspex, but it can't polish real glass after all.
Due to time constraints, Xiaoji did not purchase these "repair creams" for testing. However, from the purchase reply of these products, Xiaoji still found that many comments said that this thing was "not effective at all", "not very useful", and "not to buy", which also confirmed the judgment of Xiaoji from the other side. Of course, the small machine is still the same sentence. If you really can repair it after using it, welcome to find the small machine. If there is such a good way, how can we not let everyone know!
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