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Deep brown near-infrared reflection type heat insulation coating and preparation method thereof

A heat-insulating coating, near-infrared technology, applied in the direction of reflection/signal coating, polyester coating, coating, etc., to achieve the effect of simple preparation method, easy access to synthesis equipment and raw materials, and lower indoor temperature

Inactive Publication Date: 2014-12-31
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the pigments used in dark brown near-infrared reflective heat insulation coatings are mainly ferrochrome brown (PBR-29, PBR-33) and iron oxide brown (B-13), among which ferrochrome brown contains heavy metal chromium that is harmful to human body and environment. (Cr) oxides, and the dark brown near-infrared reflective heat-insulating coatings composed of these pigments need to be improved urgently to the reflection and barrier performance of solar heat energy.

Method used

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  • Deep brown near-infrared reflection type heat insulation coating and preparation method thereof
  • Deep brown near-infrared reflection type heat insulation coating and preparation method thereof
  • Deep brown near-infrared reflection type heat insulation coating and preparation method thereof

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Embodiment Construction

[0030] In order to facilitate those skilled in the art to further understand the present invention, the following examples are prepared according to the same preparation method.

[0031] First, prepare the near-infrared reflective pigment: mix the raw materials of the near-infrared reflective pigment, heat in a water bath, dry, and calcinate to obtain the near-infrared reflective pigment powder; wherein, the pigment raw materials are zinc nitrate hexahydrate, magnesium nitrate nonahydrate, iron nitrate nonahydrate, a Hydrated citric acid, acrylamide, and glucose were all analytically pure commercially available. The ratio of pigment raw materials is as shown in Table 1, so that the general formula is Zn (1-x) Mg x Fe 2 o 4 powder, as shown in Table 1.

[0032] Then, mixing: according to the heat insulation coating ratio shown in Table 2, the film-forming material, solvent and additives are mixed and stirred evenly, and then the near-infrared reflective pigment is added and...

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Abstract

The invention discloses a deep brown near-infrared reflection type heat insulation coating and a preparation method thereof. The heat insulation coating comprises the following components in percentage by weight: 60.5%-68.5% of a film forming material, 23%-27% of near-infrared reflection pigment, 8%-12% of a solvent and 0.3%-0.5% of an assistant, wherein the near-infrared reflection pigment is powder with a general formula of Zn(1-x)MgxFe2O4, and in the formula, x is 0, 0.1, 0.2, 0.3 or 0.4. The preparation method comprises the following steps: mixing the raw materials of the near-infrared reflection pigment, heating in a water bath, drying, and calcining to obtain the near-infrared reflection pigment powder; uniformly mixing the film forming material, the solvent and the assistant according to the ratio of the heat insulation coating, adding the near-infrared reflection pigment, uniformly stirring, and fully dispersing the pigment to obtain the near-infrared reflection type heat insulation coating. The heat insulation coating is environment-friendly and good in heat reflection and heat insulation properties.

Description

technical field [0001] The invention belongs to the technical field of reflective heat-insulating coatings, in particular to a dark brown near-infrared reflective heat-insulating coating and a preparation method thereof, which are environmentally friendly and have good performance in reflecting and blocking solar heat energy. Background technique [0002] In the solar radiation energy, the ultraviolet band contains about 5%, the visible light band (400-700nm) contains about 43%, and the near-infrared band (700-2500nm) contains about 52%. The color near-infrared reflective heat insulation coating selectively absorbs and reflects waves of a certain frequency in the visible light range, so that the heat insulation coating presents a certain color to meet the aesthetic needs, and at the same time has a strong reflection in the near-infrared band to prevent sunlight The heat energy is transferred to the inside of the covering to reduce the indoor temperature, improve the working ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D7/12C09D5/33
Inventor 韩爱军刘莉莉叶明泉陈昕冯炜
Owner NANJING UNIV OF SCI & TECH
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