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Cooling films, articles including cooling films

A product and radiation refrigeration technology, which is applied in the field of refrigeration film products and refrigeration films, can solve the problems of low bond strength, fault peeling of refrigeration film, low surface energy of fluorine-containing resin, etc., achieve high bond strength and avoid fault peeling , Improve the effect of emissivity and reflectivity

Active Publication Date: 2020-12-01
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

However, the refrigeration film has the following unavoidable defects: the surface energy of the fluorine-containing resin is low, and the bonding strength between the emissive coating 103 and the reflective layer 102 cured by the fluorine-containing resin is low, causing the refrigeration film to bend and roll. It is prone to fault spalling when winding and long-term use

Method used

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  • Cooling films, articles including cooling films
  • Cooling films, articles including cooling films
  • Cooling films, articles including cooling films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] BOPET with a thickness of 30 μm is provided as a base layer, and a silver reflective layer with a thickness of 100 nm is obtained by magnetron sputtering on the base layer.

[0071] The SiC functional additive with a particle size of 2 μm (refractive index 2.67) was dispersed in the acrylate adhesive (refractive index 1.48) to obtain a mixed solution, and the mass percentage of the SiC functional additive in the mixed solution was 2%. Then the mixed solution was coated on the silver reflective layer and cured to obtain an adhesive layer with a thickness of 3 μm.

[0072] A polyvinylidene fluoride film with a thickness of 25 μm is provided, and the first surface of the polyvinylidene fluoride film is surface-treated by plasma surface treatment, so that the first surface contains hydroxyl or carbonyl polar groups, and then the surface is treated The polyvinylidene fluoride film is laminated on the adhesive layer, and the first surface of the polyvinylidene fluoride film i...

Embodiment 2

[0074] BOPET with a thickness of 50 μm is provided as a base layer, and a silver reflective layer with a thickness of 80 nm is obtained by magnetron sputtering on the base layer.

[0075] SiO with a particle size of 5 μm 2The functional additive (refractive index 1.54) is dispersed in the acrylate adhesive (refractive index 1.48) to obtain a mixed solution, in which SiO 2 The mass percentage of functional additives is 5%. Then the mixed solution was coated on the silver reflective layer and cured to obtain an adhesive layer with a thickness of 8 μm.

[0076] A polyvinylidene fluoride film with a thickness of 35 μm is provided, and the first surface of the polyvinylidene fluoride film is surface-treated by plasma surface treatment, so that the first surface contains hydroxyl or carbonyl polar groups, and then the surface is treated The polyvinylidene fluoride film is laminated on the adhesive layer, and the first surface of the polyvinylidene fluoride film is bonded to the ad...

Embodiment 3

[0078] BOPET with a thickness of 75 μm is provided as a base layer, and a silver reflective layer with a thickness of 300 nm is obtained by magnetron sputtering on the base layer.

[0079] The SiC functional additive with a particle size of 15 μm (refractive index 2.67) was dispersed in the acrylate adhesive (refractive index 1.48) to obtain a mixed solution, and the mass percentage of the SiC functional additive in the mixed solution was 0.5%. Then the mixed solution was coated on the silver reflective layer and cured to obtain an adhesive layer with a thickness of 20 μm.

[0080] A polyvinylidene fluoride film with a thickness of 20 μm is provided, and the first surface of the polyvinylidene fluoride film is surface treated by plasma surface treatment, so that the first surface contains hydroxyl or carbonyl polar groups, and then the surface is treated The polyvinylidene fluoride film is laminated on the adhesive layer, and the first surface of the polyvinylidene fluoride fi...

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Abstract

The invention relates to a refrigeration film, comprising a base layer, a reflective layer, an adhesive layer and a fluorine-containing film sequentially stacked on the base layer, wherein the adhesive layer includes colloid and functional additives distributed in the colloid, and the material of the colloid is It is an adhesive, and the bonding substance in the adhesive is selected from compounds containing at least one of ester groups and urethane groups in the molecular chain, and the surface of the fluorine-containing film used for bonding with the adhesive layer contains Polar groups, the adhesive layer and the fluorine-containing film are connected by chemical bonds, and the adhesive layer can emit heat through the atmospheric window in the form of infrared radiation. The invention also relates to an article comprising a refrigeration membrane. The cooling film of the present invention has high interlayer bonding strength, excellent cooling effect and stable performance, and products using the cooling film of the present invention have excellent cooling effect, and at the same time, the product has low gloss and can effectively reduce light pollution during use.

Description

technical field [0001] The invention relates to the technical field of energy saving, in particular to refrigeration films and products including refrigeration films. Background technique [0002] In the field of energy-saving technology, a film with cooling function is usually attached to the surface of the object to reflect sunlight and transfer heat to outer space in the form of infrared radiation in the atmospheric window band to achieve the purpose of cooling. [0003] like figure 1 As shown, it is a traditional refrigeration film, including a base layer 101, a reflective layer 102 and an emissive coating 103 that are sequentially stacked on the base layer 101, the emissive coating 103 is formed by curing a fluorine-containing resin, and the emissive coating 103 Radiation cooling particles 104 are also distributed in the film, and the emissivity of the cooling film is 70%-100% in the 7μm-14μm waveband, and the reflectivity in the 300nm-2500nm waveband is greater than 8...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/36B32B7/12B32B7/10B32B33/00F25B23/00B32B27/08B32B15/09B32B27/12B32B27/02C09J133/04C09J175/04C09J11/04
CPCB32B5/02B32B7/10B32B7/12B32B15/09B32B27/08B32B27/12B32B27/304B32B27/36B32B33/00B32B2255/10B32B2255/205B32B2262/0284B32B2307/416B32B2307/418B32B2307/552C08K2003/3045C08K2003/3081C08K2201/005C09J11/04C09J133/04C09J175/04F25B23/003C08K3/34C08K3/36C08K3/30
Inventor 徐绍禹钟松王明辉夏兆路
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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