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Super-hydrophobic self-cleaning temperature-adaptive radiation cooling coating and coating preparation method

A self-cleaning, super-hydrophobic technology, applied in radiation-absorbing coatings, coatings, reflective/signal coatings, etc., can solve the problems of not considering the influence of material cooling or heating effects, unfavorable architectural applications, and high packaging requirements, and achieve savings The effect of power resources, global warming mitigation, and simple operation process

Active Publication Date: 2022-07-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned technologies can achieve intelligent temperature regulation to a certain extent, they are mainly used for transparent substrates, and have complex structures or high packaging requirements, which are not conducive to large-area architectural applications.
[0005] In addition, these technologies do not consider the influence of outdoor environment on the cooling or heating effect of the material, such as the impact of rain on the life of the material, the impact of water immersion on the optical properties of the material, and the impact of dust pollutants in the air on the durability of the optical properties of the material, etc.

Method used

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  • Super-hydrophobic self-cleaning temperature-adaptive radiation cooling coating and coating preparation method
  • Super-hydrophobic self-cleaning temperature-adaptive radiation cooling coating and coating preparation method
  • Super-hydrophobic self-cleaning temperature-adaptive radiation cooling coating and coating preparation method

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preparation example Construction

[0028] The preparation method of the superhydrophobic self-cleaning temperature adaptive radiation cooling coating of the present invention comprises the following steps:

[0029] Step 1, combine P(VDF-HFP), hydrophobic SiO 2 , Mix the blending agent (the blending agent 23 includes anti-ultraviolet absorber, light stabilizer, antioxidant) in the solvent acetone and stir at room temperature for 3 to 5 hours to uniformly disperse to form an organic-inorganic composite dispersion;

[0030] The mass ratio of P(VDF-HFP) to acetone is 1:(8~10), P(VDF-HFP) to hydrophobic SiO 2 The mass ratio is 2:(0.1~0.26), the content of anti-ultraviolet absorber is 0.5%~3%, the content of light stabilizer is 0.5%~3%, and the content of antioxidant is 0.5%~3%.

[0031] The mass ratio of P(VDF-HFP) to acetone is 1:(8~10), P(VDF-HFP) to hydrophobic SiO 2 The mass ratio is 2:(0.1~0.26), the content of anti-ultraviolet absorber is 0.5%~3%, the content of light stabilizer is 0.5%~3%, and the content o...

Embodiment 1

[0041] The preparation method of the superhydrophobic self-cleaning temperature adaptive radiation cooling coating of the present invention comprises the following steps:

[0042] Step 1, first weigh 2.0g of P(VDF-HFP) and 0.1g of hydrophobic SiO 2 , 0.06g of anti-ultraviolet absorber, 0.06g of light stabilizer, and 0.06g of antioxidant were dissolved in 17g of acetone solution, and stirred at room temperature for 3.5h to mix uniformly to obtain an organic-inorganic composite dispersion liquid, for use;

[0043] Step 2: Weigh 0.08 g of blue thermochromic phase change microcapsules and disperse them in 8.8 g of water, stir at room temperature for 15 min until uniformly mixed to obtain a dispersion of thermochromic phase change microcapsules, for use;

[0044] Step 3, adding 2.2g of thermochromic phase change microcapsule dispersion liquid dropwise to the organic-inorganic composite dispersion liquid at a rate of dropping 0.05ml every 15s into the organic-inorganic composite dis...

Embodiment 2

[0048] The preparation method of the superhydrophobic self-cleaning temperature adaptive radiation cooling coating of the present invention comprises the following steps:

[0049] Step 1, weigh 2.0g of P(VDF-HFP), 0.18g of hydrophobic SiO 2 , 0.01g of anti-ultraviolet absorber, 0.01g of light stabilizer, and 0.01g of antioxidant were dissolved in 16g of acetone solution, and stirred at room temperature for 3h to mix uniformly to obtain an organic-inorganic composite dispersion, for use;

[0050] Step 2: Weigh 0.32 g of red thermochromic phase change microcapsules and disperse them in 10.4 g of water, stir at room temperature for 15 min until uniformly mixed to obtain a dispersion of thermochromic phase change microcapsules, which is for later use;

[0051] Step 3, adding 2.6g of thermochromic phase change microcapsule dispersion liquid dropwise to the organic-inorganic composite dispersion liquid at a rate of dropping 0.05ml every 15s into the organic-inorganic composite dispe...

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Abstract

The invention discloses a preparation method of a super-hydrophobic self-cleaning temperature-adaptive radiation cooling coating. The preparation method comprises the following steps: firstly, mixing and dispersing an optically transparent low-surface-energy polymer poly (P (VDF-HFP)), hydrophobic nano silicon dioxide, an anti-ultraviolet absorbent, a light stabilizer and an antioxidant in a solvent to form a polymer / micro-nano particle dispersion liquid; dropwise adding the thermochromic phase-change microcapsule aqueous dispersion into the polymer / micro-nano particle dispersion, and carrying out phase separation to form a composite sol solution; and finally, blade-coating, spraying or casting the composite sol solution on a base material, and drying to obtain the polymer / micro-nanosphere organic / inorganic composite porous coating with the surface micro-nano rough structure. The prepared coating is white at high temperature, highly reflects sunlight and emits mid-infrared rays for radiation cooling; the color is presented at low temperature, and sunlight is absorbed and heated. The antifouling self-cleaning coating has good antifouling self-cleaning performance when placed outdoors, the preparation process is simple, and mass production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of radiation cooling materials, relates to a super-hydrophobic self-cleaning temperature adaptive radiation cooling coating, and also relates to a preparation method of the coating. Background technique [0002] In recent years, the problem of global warming has become increasingly serious, and the energy consumption and greenhouse effect brought about by traditional cooling technologies have been increasing. Radiation cooling material is a cooling technology with zero energy consumption. Even under direct sunlight, it can keep the temperature lower than the ambient temperature without consuming energy, showing excellent cooling effect, thus becoming a hot spot in the research field of energy and environmental cooling materials. . It transmits heat to the cold outer space in the form of electromagnetic waves through the "atmospheric transparent window" in the 8-13μm band, and effectively reflects sunlight (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/16C09D5/33C09D5/32C09D5/26C09D7/61
CPCC09D127/16C09D5/004C09D5/32C09D5/26C09D7/61C08K3/36C08K5/3475C08K5/3435C08K5/1345C08K13/02Y02P20/10
Inventor 薛朝华柳冰莹王江河胡利翠
Owner SHAANXI UNIV OF SCI & TECH
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