Multilayer radiation cooling coating and preparation method thereof
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A technology of coatings and reflective materials, applied in the direction of reflection/signal coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of reducing coating hardness and wear resistance, complex on-site processes, and low reflectivity. Achieve the effects of low cost, simple process and high solar reflectance
Inactive Publication Date: 2020-08-25
杭州净碳科技有限公司
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However, due to the use of micron-scale metal-plated reflective materials, the reflectivity of this invention is relatively low, and at the same time, the method of layered coating is adopted, and the on-site process is relatively complicated.
[0004] In addition, a radiation cooling coating with high solar reflectanc
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Embodiment 1～4
[0036] UV reflective topcoat preparation:
[0037] 1) Scatter:
[0038] Add deionized water, one-half parts by weight of additives, ultraviolet reflective materials, and fillers to a high-speed disperser, and disperse for 70 minutes at a line speed of 20m / s to obtain a slurry;
[0039] 2) Stirring:
[0040] Add the film-forming emulsion and the remaining 1 / 2 weight part of additives to the slurry, stir at a speed of 3m / s for 30min, and filter through a 90-mesh screen to obtain a UV reflective topcoat.
[0041] Table 1
[0042]
Embodiment 5～8
[0044] Preparation of visible light reflective primer:
[0045] 1) Scatter:
[0046] Add deionized water, one-half parts by weight of additives, visible light reflective materials, and fillers into a high-speed disperser, and disperse for 70 minutes at a line speed of 20m / s to obtain a slurry;
[0047] 2) Stirring:
[0048] Add the film-forming emulsion and the remaining 1 / 2 weight part of additives to the slurry, stir for 30 minutes at a speed of 1-5 m / s, and filter through a 90-mesh sieve to obtain a visible light reflection intermediate coating.
[0049] Table 2
[0050]
Embodiment 9～12
[0052] Preparation of near-infrared reflective primer:
[0053] 1) Scatter:
[0054] Add deionized water, one-half parts by weight of additives, near-infrared reflective materials, and fillers into a high-speed disperser, and disperse for 70 minutes at a line speed of 20m / s to obtain a slurry;
[0055] 2) Stirring:
[0056] Add the film-forming emulsion and the remaining 1 / 2 weight part of additives to the slurry, stir for 30 minutes at a speed of 1-5 m / s, and filter through a 90-mesh sieve to obtain a near-infrared reflection primer.
[0057] table 3
[0058]
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Abstract
The invention discloses a multilayer radiation cooling coating and a preparation method thereof. The multilayer radiation cooling coating comprises an ultraviolet reflection surface coating, a visiblelight reflection floating coating and a near-infrared reflection base coating, wherein the ultraviolet reflection surface coating contains an ultraviolet reflection material, the visible light reflection middle coating contains a visible light reflection material, and the near-infrared reflection bottom coating contains a near-infrared reflection material. By utilizing the synergistic effect of the ultraviolet reflection surface coating, the visible light reflection floating coating and the near-infrared reflection base coating, extremely high sunlight reflectivity can be generated, the process is simple, the cost is low, and the coating is suitable for special shapes and planes and can be applied to occasions such as residential buildings, commercial buildings and industrial factory buildings and has a wide application prospect.
Description
technical field [0001] The invention belongs to the technical field of energy-saving coatings, in particular to a multi-layer radiation cooling coating and a preparation method thereof. Background technique [0002] Radiation cooling materials achieve a cooling effect lower than atmospheric temperature under solar irradiation, and can replace air conditioning, spraying, etc. under certain conditions, with remarkable energy-saving effects and great application value. However, the existing radiation cooling materials often contain metal coating materials, the process is complex, the price is expensive, and it is only suitable for flat surfaces. [0003] Chinese invention patent CN 201810238449.X (publication number CN108250873A) discloses an outdoor all-weather solar reflection and infrared radiation cooling coating, by adding micron-sized spherical microbeads, micron-sized metal-plated flakes, and / or micron-sized Metal-plated spheres are used in the coating system. Through l...
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Application Information
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