Nano ceramic heat-insulating film and preparation method thereof

Abstract

The invention relates to a nano ceramic heat-insulating film and a preparation method thereof. According to the invention, a first layer of titanium dioxide film, a second layer of titanium nitride film and a third layer of titanium dioxide film are sequentially plated on one side of a base material PET by adopting a medium frequency reaction magnetron sputtering twinborn target method. The nano ceramic heat-insulating film has good spectrum selection permeation performance, has high penetration rate in a visible region and has high reflectivity in an infrared region, source of heat is reduced by virtue of obstruction of infrared ray, and thus heat insulation is realized and the permeation rate of visible light can not be affected as well. Signals of wireless communication systems, such as GPS, ETC in a vehicle or a room can not be shielded and disturbed, and the quality of the wireless communication signals in the vehicle or the room is ensured. Titanium dioxide and titanium nitride have high chemical stability at room temperature, the nano ceramic heat-insulating film is not easy to oxidize and does not react with oxygen, water, water vapor, muriatic acid, sulfuric acid and the like in general case, and the nano ceramic heat-insulating film is stable in performance, can never fade or change color and is long in service life.

Description

technical field [0001] The invention relates to a nano-ceramic heat-insulating film and a preparation method thereof, in particular to a nano-ceramic used for automobile and building glass, which has good heat-insulating effect, high definition, no shielding signal, is not easy to oxidize and has a long service life insulation film. Background technique [0002] With the development of science and technology and the arrival of the era of global "energy crisis", the insulation film is constantly developing. The first generation of heat insulation film is a coating and composite process film in the 1930s, commonly known as tea paper, which is mainly used for shading, and basically does not have heat insulation effect. The second generation is the dyed film in the 1960s. By adding pigments, films of different colors can be obtained, but they have no heat insulation effect, low visible light transmittance, poor clarity, and easy to fade. The third generation is the vacuum evap...

AI Technical Summary

Problems solved by technology

The second generation is the dyed film in the 1960s. By adding pigments, films of different colors can be obtained, but they have no heat insulation effect, low visible light transmittance, poor clarity, and easy to fade.

The third generation is the vacuum evaporation film in the early 1990s. Aluminum is evaporated on the substrate to achieve heat insulation effect, but the visible light transmission is low and the reflection is high, which affects the comfort of vision.

The fourth generation is the metal magnetron sputtering film in the late 1990s, which uniformly deposits nickel, silver, titanium, gold and other metal materials on the PET substrate, which has good heat insulation effect, high definition, Low reflection and other characteristics, but there are disadvantages such as the metal layer is easy to oxidize, and it will block GPS, ETC and other vehicle or indoor wireless communication system signals.

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