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Brief introduction of two methods for making solar film of pvd coating machine

2022-06-15

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       Solar film referred to as thermal insulation film, widely used in buildings, glass curtain walls and floor-to-ceiling glass, ceilings and ceilings, close-up buildings, exhibition halls and museums, etc., can cause vertigo, heat, protect privacy, heat and sound insulation, and increase comfort degree effect. There are two methods for the production of solar film by pvd coating machine. Most of the best solar films on the market are produced in the following two ways: one is the vacuum evaporation coating method. One is the magnetron sputtering method.


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       1. The vacuum evaporation coating method is to heat the coating material by resistance in a vacuum of 1.3×10-2~1.3×10-3Pa (10-4~10-5Torr), so that it evaporates in a very short time. The coating material molecules are deposited on the surface of the substrate to form a coating layer. The vacuum coating chamber of the pvd coating machine is the evaporation source for evaporating the coating material, and the working frame or winding device supporting the substrate is the main part of the vacuum evaporation coating equipment. The vacuum degree of the coating chamber of the vacuum coating machine, the evaporation of the coating material, the distance between the evaporation distance and the evaporation source, and the surface state and temperature of the substrate are all factors that affect the quality of the coating.
       2. The magnetron sputtering method means that electrons collide with argon atoms in the process of accelerating to the substrate under the action of an electric field, ionizing a large number of argon ions and electrons, and the electrons fly to the substrate. Under the action of the electric field, the argon ions accelerate the bombardment of the target material, sputtering a large number of target material atoms, and the neutral target atoms (or molecules) are deposited on the substrate to form a film. The secondary electrons are affected by the Loran magnetic force of the magnetic field during the acceleration and fly to the substrate, and are bound in the plasma region close to the target surface. The plasma density in this region is very high, and the secondary electrons are surrounded by the magnetic field. The target surface moves in a circular motion, and the electron has a very long movement path. During the movement, it continuously collides with argon atoms and ionizes a large number of argon ions to bombard the target material. , away from the target, and finally deposited on the substrate.
       Compared with the evaporation method, the magnetron sputtering method of the pvd coating machine has the advantages of strong bonding force between the coating layer and the substrate layer, and the coating layer is dense and uniform. The vacuum evaporation coating method needs to vaporize the metal or metal compound, and the heating temperature should not be too high, otherwise the vapor-deposited metal will burn out the plastic substrate. Therefore, the vacuum evaporation method is generally only suitable for aluminum and other low melting points. The metal source is the most widely used vacuum coating process at present. On the contrary, the sputtering coating method uses high-voltage electric field excitation to generate plasma coating material, which is suitable for almost all high melting point metals, alloys, non-metals and metal compound coating source materials, such as chromium, molybdenum, tungsten, titanium, silver, gold, etc. Moreover, it is a mandatory deposition process. The adhesion between the coating layer and the substrate obtained by this method is much higher than that of the vacuum evaporation coating method. The coating layer of the pvd coating machine has the advantages of compactness and uniformity, and the processing cost is relatively high.
       People's demand for solar film is relatively large, so it occupies a high proportion in the market. People who have a large demand for solar film and are interested will naturally pay more attention to the production method of solar film. The above pvd coating machine solar film production methods are only for everyone to understand and learn, and hope to help everyone.