Preparation of TAT tri-layer insulating film on automotive glass using magnetron sputtering method

In this paper, tri-layer structured films of titanium dioxide, silver and titanium dioxide were deposited on ordinary glass using radio frequency magnetron sputtering method to serve as thermal insulation films on automotive glass. The transmittance and thermal insulation of the prepared insulating films were changed by altering the deposition time of silver and titanium dioxide. The transmittance, absorbance and thermal insulation of the insulating films to visible light and infrared light were measured by ultraviolet-visible spectrophotometer and infrared spectrometer. The thermal conductivity of the films with different transmittances was tested by the thermal conductivity tester. The insulating films with lower thermal conductivity were screened out for analysis, and on this basis, the experiment was improved continuously. The total solar energy rejection rate was calculated subsequently. After summarizing the whole experiment process, the improvement measures were put forward to optimize the production of insulation films on automotive glass. The results show that the transmittance of TiO 2 -Ag-TiO 2 tri-layer insulation film is 70.19%, and the solar energy rejection rate is 67.80%. The transmittance meets the national standard and the total rejection rate is also higher than many of the insulation films on the market.