High-precision multilayer film system structure and preparation method and application thereof

Abstract

The invention discloses a high-precision multilayer film system structure and a preparation method and application thereof, and relates to the technical field of optical multilayer films. The structure is composed of high-refractive-index layers, low-refractive-index layers and surface anti-oxidation layers which are alternately stacked, the total number of the layers is 10-50, and 0.5-2 nm ZrO2 transition layers are arranged among the layers. The thickness ratio of the high-refractive-index layer to the low-refractive-index layer is 2.5: 1, the surface anti-oxidation layer is formed by compounding an antioxidant of a specific heteroatom structure and epoxy resin according to the ratio of 1: 30, and the thickness of the surface anti-oxidation layer is 90-100 nm. According to the structure, through the synergistic effect of transition layer densification, antioxidant molecular orientation regulation and control and an in-situ regeneration mechanism, the free radical capture rate is larger than 90%, the reflection retention rate after 500-hour aging is larger than 99%, the color difference change delta E is smaller than 1.0, the interlayer bonding strength is improved by 3 times, the service life is prolonged by 5-8 times, and the structure is particularly suitable for the field of high-stability reflector coating.

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