News centres

Home > News > Industry Trends > Brief introduction of two methods of making solar film on pvd coating machine

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

2021-01-12

22
Share

      Solar film is abbreviated as heat insulation film. It is widely used in buildings, glass curtain walls and floor-to-ceiling glass, zeniths and ceilings, close-up buildings, exhibition halls and museums, etc., which can turn to dizziness, heat, protect privacy, heat insulation and increase comfort Degree effect. There are two methods for making solar film for pvd coating machine. Most of the best solar films on the market are made by the following two methods: One is the vacuum evaporation method. One is the magnetron sputtering method.


pvd coating machine


       1. The vacuum evaporation coating method is to heat the coating material with resistance in a vacuum of 1.3×10-2~1.3×10-3Pa (10-4~10-5Torr) to make it evaporate 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 vacuum coating machine is the evaporation source for evaporating the coating material, and the work 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 pvd coating machine, the evaporation of the coating material skillfully, the evaporation distance and the spacing of the evaporation source, and the surface condition and temperature of the substrate are all factors that affect the quality of the coating.
        2. Magnetron sputtering means that electrons collide with argon atoms in the process of accelerating and flying to the substrate under the action of an electric field, ionizing a large number of argon ions and electrons, and the electrons flying to the substrate. Argon ions accelerate bombardment of the target under the action of an electric field, sputtering a large number of target atoms, and the neutral target atoms (or molecules) are deposited on the substrate to form a film. The secondary electrons are affected by the Loren magnetic force of the magnetic field during the process of accelerating and flying to the substrate, and are bound in the plasma region close to the target surface. The plasma density in this region is very high. The secondary electrons are surrounded by the magnetic field. The target surface moves in a circular motion. The electron has a very long path. During the movement, it collides with argon atoms and ionizes a large number of argon ions to bombard the target. After multiple collisions, the energy of the electrons gradually decreases, freeing from the constraints of magnetic lines of force. , Away from the target material, and finally deposited on the substrate
         Compared with the evaporation method, the magnetron sputtering method of 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 deposition metal will burn the plastic substrate. Therefore, the vacuum evaporation method is generally only suitable for aluminum and other low melting points The metal source is a widely used vacuum coating process. On the contrary, the sputtering method uses high-voltage electric field excitation to generate plasma coating materials, 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 compulsory deposition process. The adhesion of the coating layer to the substrate obtained by this method is much higher than that of the vacuum evaporation 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 accounts for a high proportion in the market. People who have a large demand for solar film and are interested naturally pay more attention to the production method of solar film. The above method of making solar film for vacuum coating machine is only for your understanding and learning. I hope to help you.
        People's demand for solar film is relatively large, so it accounts for a high proportion in the market. People who have a large demand for solar film and are interested naturally pay more attention to the production method of solar film. The above method of making solar film for pvd coating machine is only for your understanding and learning. I hope to help you.