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Preparation method of intelligent energy-saving composite film

A composite film and intelligent technology, applied in the direction of radiation-absorbing coatings, coatings, heat-sensitive coatings, etc., can solve the problems of tungsten bronze materials such as ultraviolet aging, shortening the phase transition response time, and high phase transition temperature, so as to shorten the phase transition response time, excellent UV shielding performance, and the effect of improving weather resistance

Active Publication Date: 2018-09-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of high phase transition temperature and poor thermal response of thermochromic materials, and at the same time solve the problem of ultraviolet aging of tungsten bronze materials, and provide a preparation method of intelligent energy-saving composite film, which combines thermochromic paste and tungsten The bronze heat-absorbing slurry is mixed to make a composite slurry, and then a polymer film-forming agent is added to coat the substrate to form an intelligent energy-saving composite film. The infrared absorption characteristics of tungsten bronze are used to improve the heat sensitivity of the thermochromic material and improve the thermal Response speed shortens the phase change response time, and at the same time combines the ultraviolet blocking properties of thermochromic materials to improve the weather resistance of tungsten bronze, and obtains a high-efficiency, high-stability intelligent energy-saving composite film, which can be widely used in architectural glass, automobiles Glass, etc., can make the room or car reach a comfortable temperature range throughout the year, and has a good application prospect

Method used

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  • Preparation method of intelligent energy-saving composite film
  • Preparation method of intelligent energy-saving composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take 10g vanadium dioxide (VO 2 ) powder and 1g polyvinylpyrrolidone, join in the isopropanol solvent jointly, be mixed with the VO that mass fraction is 1% through high-speed stirring 2 slurry;

[0028] (2) Take 20gK 0.01 WO 3 Powder and 10g of polyvinylpyrrolidone are jointly added in the isopropanol solvent, and after high-speed stirring, the mass fraction is 15% K 0.01 WO 3 slurry;

[0029] (3) will VO 2 Slurry and K 0.01 WO 3 The slurry is mixed with a mass ratio of 50:1 and stirred at a high speed to obtain a composite slurry;

[0030] (4) mixing and stirring the polyurethane resin and the composite slurry at a mass ratio of 0.5:1 to obtain a polymer composite liquid;

[0031] (5) Coating the polymer composite liquid on the PET base material by scraping to obtain a smart energy-saving PET composite film. The high and low temperature transmittance test chart of the obtained intelligent energy-saving PET composite film is as follows: figure 1 As shown...

Embodiment 2

[0034] (1) Take 15g of thermotropic liquid crystal and 10g of acrylate copolymer, join together in a certain amount of butyl acetate solvent, and mix it into a thermotropic liquid crystal slurry with a mass fraction of 30% through high-speed stirring;

[0035] (2) Take 10gCs 0.2 WO 3 Powder and 20g of polyvinylpyrrolidone are jointly added into a certain amount of ethanol solvent, and after high-speed stirring, it is prepared into Cs with a mass fraction of 10%. 0.2 WO3 slurry;

[0036] (3) The thermotropic liquid crystal paste and Cs 0.2 WO 3 The slurry is mixed with a mass ratio of 10:1 and stirred at a high speed to obtain a composite slurry;

[0037] (4) polyacrylic acid resin and composite slurry are mixed and stirred at a mass ratio of 6:1 to obtain a polymer composite liquid;

[0038] (5) The polymer composite liquid is coated on the glass substrate by spin coating, and an intelligent energy-saving glass composite film is obtained. The weather resistance of the pr...

Embodiment 3

[0040] (1) Take 5gAg 2 HgI 4 and 15g of sodium hexametaphosphate are jointly added to a certain amount of water, and are mixed with a mass fraction of 8% Ag through high-speed stirring. 2 HgI 4 slurry;

[0041] (2) Take 3gNa 0.4 WO 3 The powder and 3g of sodium hexametaphosphate were added to a certain amount of water, and after high-speed stirring, it was prepared into Na with a mass fraction of 2%. 0.4 WO 3 slurry;

[0042] (3) Ag 2 HgI 4 Slurry and Na 0.4 WO 3 The slurry is mixed with a mass ratio of 6:1 and stirred at a high speed to obtain a composite slurry;

[0043] (4) mixing and stirring the acrylic resin and the composite slurry at a mass ratio of 4:1 to obtain a polymer composite liquid;

[0044] (5) Coating the polymer composite liquid on the PVC base material by spraying to obtain an intelligent energy-saving PVC composite film. The weather resistance of the prepared composite film is greatly increased, and there is no change after 100 hours of weathe...

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Abstract

The invention discloses a preparation method of an intelligent energy-saving composite film. The preparation method comprises the steps: mixing thermochromic slurry and tungsten bronze heat absorbingslurry to prepare composite slurry; then, adding a polymer film forming agent; and coating a substrate to prepare the intelligent energy-saving composite film. By utilizing the infrared absorption characteristic of tungsten bronze, the heat sensitivity of a thermochromic material is improved, the thermal response speed is increased, and the phase-change response time is shortened; meanwhile, due to the combination of the ultraviolet barrier property of the thermochromic material, the weather resistance of tungsten bronze is improved, the intelligent energy-saving composite film with high efficiency and high stability is obtained, and the intelligent energy-saving composite film can be widely applied to building glass, automotive glass and the like, can make the temperature inside a room ora vehicle reach a comfortable temperature range all the year round and has a good application prospect.

Description

Technical field: [0001] The invention relates to the technical field of building energy conservation, in particular to a preparation method of an intelligent energy-saving composite film. Background technique: [0002] At present, with the improvement of people's requirements for indoor environment comfort, air conditioners have been used more and more widely, which makes the proportion of energy consumption of air conditioners in building energy consumption more and more large, and the energy consumption generated by glass doors and windows is often It accounts for more than 50% of the total energy consumption of the entire outer protective structure. The intelligent energy-saving film is applied to the window glass. By sensing changes in the surrounding environmental conditions (electricity, light, heat, etc.), it can intelligently adjust the transmission, reflection or absorption of sunlight, and make full use of or control the sunlight throughout the year. The amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/04C09D167/08C09D167/00C09D161/20C09D183/04C09D5/26C09D5/32
CPCC08K3/08C08K3/16C08K3/22C09D5/26C09D5/32C09D133/04C09D161/20C09D167/00C09D167/08C09D175/04C09D183/04
Inventor 肖秀娣徐刚程浩亮郇昌梦陆源詹勇军蒲泽伟万溧
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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