Heat insulation film, preparation method thereof and air pillow type film structure

A heat-insulating film and film structure technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as rising indoor temperature, increasing energy consumption for cooling, and difficulty in meeting the energy-saving requirements of three-star green buildings.

Active Publication Date: 2021-12-21
NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the roof of the ethylene-tetrafluoroethylene copolymer (ETFE) membrane structure improves the indoor lighting of the building, it will inevitably allow the light in the 0.78μm-2.5μm band of sunlight to enter the room, causing the indoor temperature to continue to rise and reduce energy consumption. Increase
[0003] At present, there are two ways to slow down the continuous rise of indoor temperature. One is to set up multi-layer air pillows in the ethylene-tetrafluoroethylene copolymer film structure, and the other is to print air pillows on the surface of the ethylene-tetrafluoroethylene copolymer film. Silver spots, however, the above two methods are difficult to make the ethylene-tetrafluoroethylene copolymer film structure meet the light transmittance in the 0.4μm-0.78μm band is greater than or equal to 40%, and the sunlight in the 0.3μm-2.5μm band The performance requirement that the transmittance is less than or equal to 24% makes it difficult for buildings to meet the energy-saving requirements of the three-star green building standard

Method used

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  • Heat insulation film, preparation method thereof and air pillow type film structure
  • Heat insulation film, preparation method thereof and air pillow type film structure
  • Heat insulation film, preparation method thereof and air pillow type film structure

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preparation example Construction

[0056] The present invention provides a method for preparing the heat insulation film 10 as described above, comprising the following steps:

[0057] S1, providing a photoselective lyosol with Tyndall effect, wherein the photoselective lyosol contains the first resin and cesium tungsten bronze 103; and

[0058] S2, providing an ethylene-tetrafluoroethylene copolymer film 101, and placing the photoselective liquid sol on any surface of the ethylene-tetrafluoroethylene copolymer film 101, so that the photoselective liquid sol forms a photoselective coating 102, The heat insulating film 10 was obtained.

[0059] The photoselective sol provided in step S1 has the Tyndall effect, so as to ensure that the cesium tungsten bronze 103 is uniformly dispersed in the photoselective sol.

[0060] Specifically, in the photoselective sol, based on 100 parts by weight of the first resin, the mass of cesium tungsten bronze 103 is 5 parts by weight to 35 parts by weight, more preferably 10 par...

Embodiment 1

[0090] Mix 10 parts by weight of cesium tungsten bronze 103 (with an average particle size of 40nm) and 40 parts by weight of ethyl acetate as a dispersion medium, and grind with nano-grinding equipment to uniformly disperse the tungsten-cesium bronze to obtain a slurry of tungsten-cesium bronze.

[0091] Mix 100 parts by weight of polyurethane resin, 80 parts by weight of ethyl acetate, 10 parts by weight of isocyanate, and 4 parts by weight of UV328, and then add 50 parts by weight of tungsten-cesium bronze slurry to obtain a mixture. Use a 300-mesh filter cloth The mixture was filtered to obtain a photoselective lyosol. After testing, the photoselective sol has the Tyndall effect, and the tungsten-cesium bronze is uniformly dispersed in the photoselective sol.

[0092] Provide an ethylene-tetrafluoroethylene copolymer film 101 with a thickness of 200 μm, and corona treat any surface of the ethylene-tetrafluoroethylene copolymer film 101 so that the surface tension is 60 dyn...

Embodiment 2

[0094] Example 2 Referring to the implementation of Example 1, the difference is that the polyurethane resin is replaced by an acrylic resin. After testing, the photoselective lyosol has Tyndall effect, and the tungsten-cesium bronze is uniformly dispersed in the photoselective lyosol.

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Abstract

The invention relates to a heat insulation film, a preparation method thereof and an air pillow type film structure. The heat insulation film comprises an ethylene-tetrafluoroethylene copolymer film and a light-selective coating which is attached to any surface of the ethylene-tetrafluoroethylene copolymer film, has a Tyndall effect and is made of light-selective lyosol; a base material of the light-selective coating is first resin, and cesium tungsten bronze is further distributed in the light-selective coating; and the visible light transmittance of the light selective coating is greater than 40%, and the infrared light rejection rate of the light selective coating is larger than or equal to 90%. The air pillow type film structure comprises the heat insulation film and at least one light-transmitting film, the heat insulation film and the light-transmitting film are arranged in a stacked mode, and a light selective coating in the heat insulation film faces the light-transmitting film. A building using the air pillow type film structure with the heat insulation film can meet the three-star-level green building standard when the visible light transmittance is larger than or equal to 40% and the full-wave-band sunlight transmittance is smaller than or equal to 24%.

Description

technical field [0001] The invention relates to the technical field of energy saving, in particular to a heat insulating film, a preparation method thereof and an air pillow film structure. Background technique [0002] When the roof of ethylene-tetrafluoroethylene copolymer (ETFE) membrane structure improves the indoor lighting of buildings, it will inevitably make the light in the 0.78μm-2.5μm band of sunlight enter the room, causing the indoor temperature to continue to rise and reduce energy consumption. Increase. [0003] At present, there are two ways to slow down the continuous rise of indoor temperature. One is to set up multi-layer air pillows in the ethylene-tetrafluoroethylene copolymer film structure, and the other is to print air pillows on the surface of the ethylene-tetrafluoroethylene copolymer film. Silver spots, however, the above two methods are difficult to make the ethylene-tetrafluoroethylene copolymer film structure meet the light transmittance in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08L23/08C09D175/04C09D133/00C09D7/61
CPCC08J7/0427C09D175/04C09D133/00C09D7/61C09D7/67C08J2323/08C08J2475/04C08J2433/00C08K3/22
Inventor 杨荣贵万容兵林鲁斌
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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