A blue-green triple-silver low-radiation energy-saving window film and preparation method thereof

Abstract

The invention provides a blue-green three-silver low-radiation energy-saving window film and a preparing method thereof. The color of the window film is blue-green in the sun. The film structure of the blue-green three-silver low-radiation energy-saving window film sequentially comprises a flexible transparent PET base material layer, a first high refraction index layer, a first metallic oxide layer, a first silver alloy layer, a first blocking layer, a second high refraction index layer, a second metallic oxide layer, a second silver alloy layer, a second blocking layer and a third high refraction index layer from inside to outside. According to the window film, through reflection of the three layers of silver alloy layers on infrared light, a refraction index matching relation is formed with four layers of high refraction layers; and through cooperation of thickness parameters, the color of the window film is blue-green when observed in the sun, and the excellent visual effect is achieved. Meanwhile, the blue-green three-silver low-radiation energy-saving window film is excellent in light-transmitting performance, thermal insulation and oxidation resistance, long in service life and easy to produce.

Description

technical field [0001] The invention relates to a film attached to window glass of automobiles, buildings, etc., in particular to a blue-green window film under sunlight, in particular to a blue-green triple-silver low-radiation energy-saving window film and a preparation method thereof. Background technique [0002] The window glass of automobiles, buildings, etc. often needs to be attached with a film, usually called a window film, to provide functions such as heat insulation and UV protection. At the same time, the window film with excellent performance can also provide good visible light transmittance, so that the outside of the window can be clearly observed from the inside of the window glass. Among them, the low-e window film, also known as Low-E window film, is formed by depositing a low-e film layer on the surface of a flexible transparent substrate; the low-e window film has a high light transmittance to visible light, and has a certain With high reflectivity, it ...

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Problems solved by technology

[0003] At present, the traditional low-e energy-saving window film has some shortcomings such as single color and poor heat insulation performance, and blue-green window film with strong decorative effect is even rarer.

At present, most of the window films are heat-reflective coating window films with poor energy-saving performance, which have poor structural stability, poor heat insulation effect, and short service life, which is not conducive to wide-scale promotion of products.

[0004] In the industrial production of low-radiation and energy-saving window films, the magnetron window film needs to be coated and compounded in the later stage of production, which makes the window film inevitably contact with air, which causes its oxidation, and the temperature changes during transportation , will also accelerate the oxidation of the window film, directly affecting its service life

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