Radiation refrigeration film, radiation refrigeration composite film and radiation refrigeration product

A technology of radiation refrigeration and composite film, applied in the field of radiation refrigeration films and radiation refrigeration products, can solve the problems of light pollution, obvious specular reflection, serious light pollution, etc., and achieve the effect of low gloss, reduced light pollution and low surface gloss.

Active Publication Date: 2020-05-08
NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specular reflection of the traditional radiative cooling composite film is relatively obvious, which is easy to cause light pollution
[0003] The reason is that in the traditional radiation cooling composite film, the radiation cooling film is only made of a single polymer material or inorganic fillers are added inside the polymer material, the haze of the

Method used

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  • Radiation refrigeration film, radiation refrigeration composite film and radiation refrigeration product
  • Radiation refrigeration film, radiation refrigeration composite film and radiation refrigeration product
  • Radiation refrigeration film, radiation refrigeration composite film and radiation refrigeration product

Examples

Experimental program
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Example Embodiment

[0072] Example 1

[0073] In the radiant refrigeration film of this embodiment, the material of the base layer is PMMA, and the filler is PS microspheres, which are prepared by a melt blending method. Wherein, the refractive index n of the material of the base layer is 1.49%, the refractive index m of the filler is 1.58%, and the absolute value of the refractive index difference x is 0.09%. The thickness of the radiant refrigeration film is 50 μm, the particle size of the filler in the radiant refrigeration film is 3 μm, and the mass percentage is 2%.

Example Embodiment

[0074] Example 2

[0075] In the radiant refrigeration film of this embodiment, the material of the base layer is PETG, and the filler is PMMA microspheres, which are prepared by a melt blending method. Wherein, the refractive index n of the material of the base layer is 1.54%, the refractive index m of the filler is 1.48%, and the absolute value of the refractive index difference x is 0.06%. The thickness of the radiant refrigeration film is 50 μm, the particle size of the filler in the radiant refrigeration film is 5 μm, and the mass percentage is 5%.

Example Embodiment

[0076] Example 3

[0077] In the radiant refrigeration film of this embodiment, the material of the base layer is PETG, and the filler is acrylate microspheres, which are prepared by a melt blending method. Wherein, the refractive index n of the material of the base layer is 1.54%, the refractive index m of the filler is 1.43%, and the absolute value of the refractive index difference x is 0.11%. The thickness of the radiant refrigeration film is 50 μm, the particle size of the filler in the radiant refrigeration film is 3 μm, and the mass percentage is 3%.

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Abstract

The invention relates to a radiation refrigeration film. The radiation refrigeration film comprises a matrix layer and a filler distributed in the matrix layer, the refractive index of the material ofthe matrix layer is n, n is 1.3 to 1.7, the refractive index of the filler is m, the difference between n and m is x, an absolute value of x is greater than or equal to 0.05%, the emissivity of the radiation refrigeration film in an atmospheric window of 7-14 microns is greater than or equal to 80%, the heat reflectivity of the radiation refrigeration film in a wave band of 300-2500nm is greaterthan or equal to 10%, and the glossiness of the radiation refrigeration film is less than or equal to 20GU. Through selection of the material and the filler of the matrix layer and adjustment of the relationship of the refractive index, the radiation refrigeration effect of the radiation refrigeration film is excellent, and the glossiness is low. The invention further provides a radiation refrigeration composite film and a radiation refrigeration product, light pollution in the using process can be effectively reduced, and the excellent radiation refrigeration effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of thin films, in particular to radiation cooling films, radiation cooling composite films and radiation cooling products. Background technique [0002] Radiation cooling composite film is a film that can adjust temperature. It has the advantages of no energy consumption and no pollution. It is widely used in energy-saving building materials, photovoltaic industry, outdoor products and other fields. Among them, in the field of energy-saving building materials, radiative cooling composite films are usually attached to the exterior walls or roofs of buildings. The radiative cooling composite films can reflect sunlight and transfer heat to outer space in the form of infrared radiation in the atmospheric window band. , to reduce the indoor temperature of the building. However, the specular reflection of the traditional radiative cooling composite film is obvious, which is easy to cause light pollution. [0003...

Claims

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Application Information

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IPC IPC(8): B32B5/18B32B27/30B32B27/20B32B27/36B32B27/06B32B25/14B32B25/04B32B15/06B32B15/08B32B15/04B32B17/06B32B11/04B32B13/04B32B5/02B32B7/12E04B2/00E04D13/00E04B1/62
CPCB32B5/18B32B27/308B32B27/205B32B27/36B32B27/06B32B25/14B32B25/04B32B15/06B32B15/08B32B15/04B32B17/06B32B11/04B32B13/04B32B5/02B32B7/12E04B2/00E04D13/00E04B1/62B32B2266/0264B32B2266/0221B32B2607/02B32B2419/06B32B2307/416B32B2307/418B32B2307/408
Inventor 徐绍禹吕乐夏兆路蔡梦丹王明辉
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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