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Energy-consumption-free self-adaptive temperature control coating material as well as preparation method and application thereof

A coating material and self-adaptive technology, applied in coatings, heat-sensitive coatings, reflective/signal coatings, etc., can solve problems such as energy consumption, lack of induction and spontaneous regulation, and lack of automatic switching of cooling/heat preservation functions, etc. Achieve the effect of enhanced reflectivity and improved mechanical properties

Active Publication Date: 2022-05-10
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned double-layer intelligent temperature control coating material can realize temperature control, it needs mechanical stimulation to realize the conversion between cooling and heating, and there is still energy consumption. Controlling, does not have the function of automatically switching cooling / insulation with the change of ambient temperature

Method used

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  • Energy-consumption-free self-adaptive temperature control coating material as well as preparation method and application thereof
  • Energy-consumption-free self-adaptive temperature control coating material as well as preparation method and application thereof
  • Energy-consumption-free self-adaptive temperature control coating material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]A non-energy self-adaptive temperature control coating material, with a spectrally selective porous film as the bottom layer, a thermochromic film on the spectrally selective porous film, and an anti-light fatigue film on the thermochromic film, in which the spectrally selective The porous film is a polymer porous film, the thermochromic film is a thermochromic microcapsule film, and the anti-light fatigue film is prepared by curing a UV absorber and a hindered amine light stabilizer. The mass ratio of the stabilizer is 1:1.

[0056] In this embodiment, the ultraviolet absorber is Tinuvin 1130, the hindered amine light stabilizer is Tinuvin 622SF, and the thickness of the anti-light fatigue film is 20 μm.

[0057] In this embodiment, the spectrally selective porous film is a polymer porous film, which is formed by stacking polymer porous films with a thickness of 280 μm; The peak distribution and the wide distribution are 0.2μm~0.6μm and 2μm~4.2μm respectively, and the ...

Embodiment 2

[0078] A method for preparing a self-adaptive temperature-control coating material without energy consumption, the steps are basically the same as in Example 1, the only difference is that in step (2), the mass ratio of thermochromic microcapsules to polymer is 1:20.

[0079] After testing, the solar reflectance of the energy-free self-adaptive temperature-control coating material in the colored state and the colorless state are 78.48% and 94.63% respectively, and the variation range reaches 16.15%.

Embodiment 3

[0081]A method for preparing a self-adaptive temperature-controlling coating material without energy consumption, the steps are basically the same as in Example 1, the only difference is that in step (2), the mass ratio of thermochromic microcapsules to polymer is 3:20.

[0082] After testing, the solar reflectance of the non-energy self-adaptive temperature control coating material in the colored state and the colorless state are 72.41% and 93.86% respectively, and the variation range reaches 21.45%.

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Abstract

The invention discloses an energy-consumption-free self-adaptive temperature control coating material as well as a preparation method and application thereof, the coating material takes a polymer porous membrane as a bottom layer, and a thermochromic film is arranged on the bottom layer. The preparation method comprises the following steps: preparing a spectral selective porous film by taking a polymer, a solvent and a non-solvent as raw materials; the thermochromic microcapsule, a polymer, a curing agent and a solvent are used as raw materials to form a thermochromic film on a spectrum selective porous film, and the coating material is obtained. The energy-consumption-free self-adaptive temperature control coating material has the function of automatically switching cooling / heat preservation along with the change of the environment temperature, refrigeration in summer and heating in winter can be autonomously achieved by sensing the environment temperature, no energy is consumed in the whole temperature control process, energy consumption is greatly reduced, and the energy-consumption-free self-adaptive temperature control coating material has high use value and good application prospects and is worthy of popularization and application. The preparation method has the advantages of being simple and easy to implement, low in production cost, high in film forming efficiency and the like, is suitable for preparing large-area coating materials and is beneficial to industrial application.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a non-energy self-adaptive temperature control coating material and its preparation method and application. Background technique [0002] Passive radiative cooling is a way for materials to use their strong infrared radiation capabilities in the atmospheric window band to throw their own heat into the cold outer space to achieve cooling. This cooling method does not require energy consumption, so it can effectively alleviate the current energy crisis and greenhouse effect. Studies have shown that radiative cooling can theoretically achieve a cooling effect of 58°C, but the premise is that the material must have strict spectral selectivity, that is, only 100% absorbs infrared heat in the 8-13 μm band, and has no effect on other bands, especially sunlight. Light needs to be 100% reflective. In recent years, in order to obtain thermal management materials with spectral sel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/36C08J5/18C08L27/16C09D5/26C09D133/00C09D7/48C09D5/33
CPCC08J9/365C08J5/18C09D5/26C09D133/00C09D7/48C09D5/004C08J2327/16
Inventor 王璟谢敏安一卓孙骏宇彭琳露杨子源陈羿帆纪澄
Owner NAT UNIV OF DEFENSE TECH
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