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A kind of coated product and preparation method thereof

A product and coating technology, applied in the direction of coating, etc., to achieve the effect of improving performance, increasing spectral reflectance, and reducing production costs

Inactive Publication Date: 2017-04-26
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(H.Gonome, M.Baneshi, J.Okajima, A.Komiya, S.Maruyama, Controlling the radiative properties of cool black-colorcoatings pigmented with CuO submicron particles, J.Quant.Spectrosc.Radiant.Transfer 132(2014)90 -98.), however, the coating performance still has room for further improvement

Method used

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  • A kind of coated product and preparation method thereof
  • A kind of coated product and preparation method thereof
  • A kind of coated product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] The preparation method of the paint is as follows: calculate the mass of copper oxide particles and acrylic resin required for the paint, then mix the dispersed phase copper oxide particles and resin evenly, and heat at a temperature of 70°C to 90°C to form a uniform and transparent paint. Sol.

[0053] The paint is sprayed on the base material in sequence to form a set thickness, and after drying, the coated product of the present invention is obtained.

Embodiment 1

[0055] The base material is a wall with a reflectivity of 1.0, the metal oxide particles are copper oxide particles with a diameter of 0.57 μm, and the scattering medium is acrylic resin. The coatings are the first coating and the second coating, the first coating and the second coating. The second coating is composed of copper oxide particles and acrylic resin, wherein the volume fraction of copper oxide is 0.5% and 4.5% respectively, and the thickness is 20 μm. The first coating covers the surface of the substrate, and the second coating covers the surface of the first coating.

[0056] Using the I(λ) and h(λ) parameters in the literature, and calculating the spectral reflectance ρ(λ) through Mie theory, the optimized parameter R can be obtained by substituting it into equation (1) opt . The resulting coating material R opt The maximum value of is 19.80, which is nearly 30% higher than that of the coating with uniform volume fraction of copper oxide in the prior art under ...

Embodiment 2

[0058] Repeat Example 1, the difference is that the reflectance of the surface of the substrate is 0, the metal oxide particles are copper oxide particles with a diameter of 0.50 μm, and the coating is uniformly increased from the bottom to the top. For the coating, the volume fraction of the copper oxide particles at the bottom of the coating is 1%, the volume fraction of the copper oxide particles at the top of the coating is 4%, and the total thickness of the coating is 50 μm.

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Abstract

The invention discloses a coating product which comprises a base material and a plurality of layers of coatings, wherein the plurality of layers of coatings cover all or part surface of the base material, and comprises the materials of acrylic resin and metallic oxide spherical particles; the metallic oxide spherical particles are made of copper oxide, zinc oxide, titanium dioxide, aluminum oxide, ferric oxide or zirconium oxide with the particle diameter of 0.2-5.0 [mu]m and the thickness of 10-100 [mu]m; the plurality of layers of coatings consist of the first coating, the second coating, ... and the Nth coating from the bottom surface to the top surface. The invention further discloses a preparation method for the coating product. The uniform coating in the prior art is replaced by the plurality of layers of coatings, so that under the condition of not adding material consumption, the spectral reflectivity of the near-infrared light area is improved, the heating effect of the coating product is reduced, and the performance of the coating product is improved.

Description

technical field [0001] The invention belongs to the field of coating materials, and more specifically relates to a coated product and a preparation method thereof. Background technique [0002] Coating materials are widely used in buildings, cars, and other man-made objects. Objects on earth receive a lot of solar radiation every day. The wavelength of solar radiation reaching the earth's surface is concentrated in the range of 0.3 μm to 2.5 μm, which is specifically divided into the ultraviolet region (0.3 μm to 0.38 μm), the visible light region (0.38 μm to 0.78 μm) and the near infrared region (0.78 μm to 2.5 μm). μm). Due to the large reduction of urban green area and the large absorption of radiant energy by buildings and roads, a heat island effect occurs, making the average temperature of the city center 3 to 5 degrees Celsius higher than that of the surrounding environment. Such radiation absorption increases the temperature inside the building thereby increasing e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/12
Inventor 程强柴家乐苏阳宋金霖周奕帆司梦婷
Owner HUAZHONG UNIV OF SCI & TECH
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