About non-conductive vacuum metallization film

The surface of the product has a metallic luster and color and asked that the film has a greater resistance (not entirely non-conductive), the general White is not the silver-based conductive film, as well as part of the conductive film on the surface of silver is not a variety of color shading. Here, I mainly talk about the high demand for silver-white metallic non-conductive film production. We all know that metals or metal compounds have electrical conductivity, electrical conductivity is only a difference in degree. However, when the metal or metal compound showed a film of the state, the corresponding physical characteristics will be different. Conventional coating materials, such as: Silver is the best silver effect and conductive properties of metal, but it is below 5 nm in thickness, it is not conductive; aluminum conductive silver effect and slightly worse than silver, but its thickness is 0.9 nm, it already has electrical conductivity. Why is it so? That is because there is no silver aluminum elements of continuity is good, so the relative film thickness, it's conductivity but poor. Non-conductive vacuum metallization film actually use some of the elements of metal poor continuity principle, to control its thickness in a range, it has a large silver-white appearance and resistance. Thus, titanium dioxide the effect of the metal conductive film is saying is not the film thickness is directly related. Only in a fixed film thickness, the stable to get the corresponding non-conductive silver film.As already mentioned, the best silver effect and conductive properties of silver in the thickness of 5 nm and below, it is not conductive, then, is not do we need to be a silver conductive film of metal is not it? The answer is no. Because the thickness of 5 nm and below is basically colorless silver, Nickel oxide although it is not conductive, but it can not also have the effect of silver. Similarly, aluminum does not work. Therefore, we need a way to a silver-white metallic luster plated and has a greater resistance of metal materials. In accordance with current market conditions are, we are using the purity of 99.99% of the tin. Thickness of 30 nm below the tin, continuity quite poor, but it can get silver-white metallic luster and has a greater resistance.With the rapid development in recent years, the mobile phone industry, function is not the only goal of consumers. Phone looks also attracted the attention of the public, therefore, have metallic luster and color of the phone shell to become an irreplaceable part of the mobile phone decoration, but As the metal or metal layer of the shell will shield the signal transmitted by the phone, so phone manufacturers want to get both a metallic effect with cell phone signal but will not affect the cell phone case, then, after the vacuum treatment of non-conductive plastic coating case served as the success of this task. Now, almost all brands of mobile phones without vacuum plating non-conductive film made of parts, it can be said that this product will always be popular with people. Source:http://www.mhcocm.com