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CN-224212599-U - Heat-insulating anti-reflection functional film

CN224212599UCN 224212599 UCN224212599 UCN 224212599UCN-224212599-U

Abstract

The utility model discloses a heat-insulating and anti-reflection functional film which comprises a substrate layer, a titanium dioxide layer, an indium tin oxide layer, a priming layer and an anti-reflection layer which are sequentially laminated, wherein the refractive index of the indium tin oxide layer is 1.8-2.0, and the refractive index of the anti-reflection layer is 1.40-1.45. The heat-insulating anti-reflection functional film can reduce the external heat entering the vehicle, reduce the energy consumption of the vehicle in daily life, and can greatly enhance the appreciation of passengers on the external natural landscape by matching with the anti-reflection coating, and because the forbidden band width (band gap) of the ITO film is usually between 3.5 and 4.3eV and the photon energy in the ultraviolet light region is larger than the forbidden band width, photons are absorbed and electronic transition is initiated, so that the extremely low light transmittance is shown, and the skin of the user in the vehicle can be protected from being damaged by ultraviolet rays.

Inventors

  • ZHANG LIN
  • GU HAODONG
  • SUN XINHAO
  • YUAN MING

Assignees

  • 江苏日久光电股份有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (9)

  1. 1. The heat-insulating anti-reflection functional film is characterized by comprising a substrate layer, a titanium dioxide layer, an indium tin oxide layer, a priming layer and an anti-reflection layer which are sequentially laminated; The refractive index of the indium tin oxide layer is 1.8-2.0, and the refractive index of the anti-reflection layer is 1.40-1.45.
  2. 2. The thermally insulating, antireflective functional film of claim 1, wherein said indium tin oxide layer has a thickness of 50nm to 300nm.
  3. 3. The thermally insulating, antireflective functional film of claim 1, wherein said antireflective layer has a thickness of 80nm to 100nm.
  4. 4. The thermally insulating, antireflective functional film of claim 1 wherein said antireflective layer is an acrylic layer.
  5. 5. The thermally insulating, antireflective functional film of claim 1, wherein said titanium dioxide layer has a thickness of 10nm to 20nm.
  6. 6. The thermally insulating, antireflective functional film of claim 1, wherein said primer layer is a silica layer.
  7. 7. The thermally insulating, antireflective functional film of claim 6, wherein said primer layer has a thickness of 10nm to 20nm.
  8. 8. The heat-insulating and anti-reflection functional film according to claim 1, wherein an anti-fouling layer is further arranged on one side of the anti-reflection layer, which is away from the base layer, and the thickness of the anti-fouling layer is 10nm-20nm.
  9. 9. The thermal insulation and reflection prevention functional film according to claim 1, wherein the substrate layer is a PET layer and has a thickness of 23-125 μm.

Description

Heat-insulating anti-reflection functional film Technical Field The utility model belongs to the technical field of optical films, and particularly relates to a heat-insulating anti-reflection functional film. Background The existing automobile sunroof generally adopts common glass or single-layer coated glass, and the light transmittance of the automobile sunroof can meet basic requirements (about 80% -90%), but glare or reflection interference is easy to generate in a complex illumination environment, so that the driving visual field is influenced. For example, although the visual permeability of a sky shade (a fixed panoramic sunroof) is better, the light transmittance and the heat insulation performance are difficult to be compatible, and auxiliary equipment such as a sunshade curtain is needed to be relied on particularly when strong light is directly emitted, so that the continuity of user experience is reduced. In addition, conventional skylight structures (e.g., multiple glazing or metal frames) may suffer from reduced light scattering or transmission efficiency due to thickness or material limitations, and thus may be difficult to achieve truly "no-sense anti-reflection". In addition, the heat insulation performance of the skylight mainly depends on glass materials and coating technology, but the existing scheme has obvious short plates. The common skylight glass has limited reflectivity (about 60% -80% of near infrared reflectivity) to infrared rays, and has poorer blocking effect to far infrared radiation (such as in-car heat radiation), so that the temperature in the car is rapidly increased in summer, and the air conditioner is required to be relied on for additional cooling, thereby increasing energy consumption. Although the infrared reflection is improved by adopting a Low-E coating technology, the durability of the coating is insufficient, and the coating is easy to oxidize or scratch after long-term use, so that the performance is attenuated. In addition, the panoramic sunroof is easy to cause the ageing of the adhesive tape due to expansion with heat and contraction with cold because of large area and complex sealing structure, so that the heat insulation effect is further weakened and the water leakage problem is caused. Current patents focus on single performance optimizations (such as sealing, durability, or safety) and lack synergistic design for anti-reflection and thermal insulation. For example, the "sunroof glass fixture patent" (CN 222138055U) simplifies the installation procedure, but does not address the inherent drawbacks of glass materials to heat conduction. Although the automatic window explosion patent (CN 119659517A) improves the emergency escape capability, the requirements of optics and heat management in daily use are not met. Therefore, in order to solve the above-mentioned problems, it is necessary to provide a heat-insulating and anti-reflection functional film. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Disclosure of utility model The utility model aims to provide a heat-insulating and anti-reflection functional film which can have heat insulation and light transmission performance and improve the anti-reflection and heat insulation effects of an automobile skylight. In order to achieve the above object, a specific embodiment of the present utility model provides the following technical solution: A heat-insulating anti-reflection functional film comprises a substrate layer, a titanium dioxide layer, an indium tin oxide layer, a priming layer and an anti-reflection layer which are sequentially laminated; The refractive index of the indium tin oxide layer is 1.8-2.0, and the refractive index of the anti-reflection layer is 1.40-1.45. In one or more embodiments of the utility model, the indium tin oxide layer has a thickness of 50nm to 300nm. In one or more embodiments of the utility model, the antireflective layer has a thickness of 80nm to 100nm. In one or more embodiments of the utility model, the anti-reflective layer is an acrylic layer. In one or more embodiments of the utility model, the titanium dioxide layer has a thickness of 10nm to 20nm. In one or more embodiments of the utility model, the primer layer is a silicon dioxide layer. In one or more embodiments of the utility model, the primer layer has a thickness of 10nm to 20nm. In one or more embodiments of the present utility model, an anti-fouling layer is further disposed on a side of the anti-reflection layer facing away from the underlayer, and the thickness of the anti-fouling layer is 10nm to 20nm. In one or more embodiments of the utility model, the substrate layer is a PET layer having a thickness of 23 μm to 125 μm. Compared with the