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Yellow-brown near-infrared reflection type thermal-insulating coating and preparation method thereof

A heat-insulating coating and near-infrared technology, applied in reflection/signal coatings, polyester coatings, coatings, etc., can solve problems such as poor reflection ability, and achieve the effects of low cost, simple preparation method and low cost

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

AI Technical Summary

Problems solved by technology

At present, the pigments used in yellow-brown near-infrared reflective heat-insulating coatings mainly include titanium chrome yellow (PBR-24), titanium nickel yellow (PY-53), cadmium yellow (Y02), chrome yellow (Y03) and iron oxide yellow (Y01). ), etc., some pigments contain oxides of heavy metals chromium (Cr), nickel (Ni) and cadmium (Cd) that are harmful to the human body and the environment, and the yellow-brown near-infrared reflective heat-insulation coating composed of these pigments, in the near-infrared The reflection ability of the wave band is poor, and the reflection and blocking performance of solar heat energy needs to be improved urgently

Method used

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  • Yellow-brown near-infrared reflection type thermal-insulating coating and preparation method thereof
  • Yellow-brown near-infrared reflection type thermal-insulating coating and preparation method thereof
  • Yellow-brown near-infrared reflection type thermal-insulating 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 lanthanum nitrate hexahydrate, iron nitrate nonahydrate, aluminum nitrate nonahydrate, mono 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 LaFe (1-x) Al x o 3 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 ...

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Abstract

The invention discloses a yellow-brown near-infrared reflection type thermal-insulating coating and a preparation method thereof. The thermal-insulating coating is prepared from the following constituents in percentage by weight: 57.5-69.5% of a film forming material, 20-28% of near-infrared reflection pigment, 10-14% of a solvent, and 0.3-0.6% of an auxiliary, wherein the near-infrared reflection pigment is powder with a general formula of LaFe(1-x)AlxO3, in which x is equal to 0, 0.1, 0.3, 0.5 or 0.7. The preparation method of the coating comprises the following steps: mixing the raw material of the near-infrared reflection pigment, heating in water bath, drying, and calcining so as to obtain the near-infrared reflection pigment powder; firstly mixing and stirring the film forming material, the solvent and the auxiliary uniformly according to the proportion of the thermal-insulating coating, and then adding the near-infrared reflection pigment to be stirred uniformly, and completely dispersing the pigment so as to obtain the near-infrared reflection type thermal-insulating coating. The thermal-insulating coating disclosed by the invention is environment-friendly, and good in heat reflection and thermal barrier property.

Description

technical field [0001] The invention belongs to the technical field of reflective heat-insulating coatings, in particular to a yellow-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] Thermal insulation coatings can generally be divided into thermal barrier type, solar reflection type and infrared radiation type. The solar reflective heat insulation coating composed of resin film-forming materials, near-infrared reflective pigments, solvents and additives, its heat insulation performance mainly depends on the near-infrared reflective pigment components. The near-infrared heat-reflective heat-insulating coating is painted on the outer surface of buildings, infrastructure and equipment, which can reflect solar radiation energy and reduce the transfer of solar heat to the interior of the covering to reduc...

Claims

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Application Information

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