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Natural partition lanthanum cerium oxide reflective heat-preservation coating and preparation method thereof

A technology of reflective heat-insulating coating and lanthanum cerium oxide, which is applied in the direction of reflection/signal coating, multi-color effect coating, anti-fouling/underwater coating, etc. Improve pollution, improve reflectivity, reduce the effect of building surface and internal temperature

Pending Publication Date: 2021-12-21
TIANJIN BAOGANG RES INST OF RARE EARTHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After adding color paste or inorganic pigments, the reflectivity of the paint will decrease, and the heat insulation effect will decrease significantly

Method used

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  • Natural partition lanthanum cerium oxide reflective heat-preservation coating and preparation method thereof
  • Natural partition lanthanum cerium oxide reflective heat-preservation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of primer comprises the steps:

[0033] Stir and pre-disperse 175 g of deionized water, 8 g of predispersant, and 450 g of naturally distributed lanthanum cerium oxide, and grind for 15 minutes with a sand mill until the naturally distributed lanthanum cerium oxide D (90) in the slurry is 1.0 μm. The above slurry was mixed with 300g of water-based pure acrylic emulsion, 8g of dispersant, 5g of wetting agent, 2.5g of defoamer, 1.5g of multifunctional auxiliary agent, 35g of film-forming auxiliary agent, and 3g of thickener in a disperser, Control the line speed at 8m / s, stir for 35 minutes, add 2.0g of pH adjuster, and stir for 5 minutes to obtain the natural partition lanthanum cerium oxide reflective thermal insulation paint primer.

[0034] The preparation method of topcoat comprises the steps:

[0035] 200g of deionized water, 6g of pre-dispersant, 80g of nickel titanate infrared reflective pigment, 320g of naturally distributed lanthanum ceri...

Embodiment 2

[0039] The preparation method of primer is with embodiment 1.

[0040] The preparation method of topcoat comprises the steps:

[0041] Stir and pre-disperse 300g of deionized water, 18g of pre-dispersant, 200g of ultramarine blue pigment, and 200g of naturally distributed lanthanum cerium oxide, and grind for 10 minutes with a sand mill until the particle size D (90) of the pigment in the slurry is 1.5 μm. Mix the blue slurry with 280g of water-based pure acrylic emulsion, 6g of dispersant, 5g of wetting agent, 5.5g of defoamer, 3.5g of multifunctional additive, 33g of film-forming additive, and 5g of thickener in the disperser with high-speed stirring , the line speed was controlled at 8m / s, stirred for 35 minutes, 2.5g of pH regulator was added, and stirred for 5 minutes to obtain brick red reflective heat insulation paint finish B.

[0042]The test sample is first sprayed with a layer of primer with a thickness of 0.1mm to 0.15mm, and then sprayed with a layer of topcoat B...

Embodiment 3

[0045] The preparation method of primer is the same as embodiment 1.

[0046] The preparation method of topcoat comprises the steps:

[0047] Stir and pre-disperse 300 g of deionized water, 8 g of pre-dispersant, 50 g of iron oxide black pigment, and 250 g of naturally distributed lanthanum cerium oxide, and grind for 10 minutes with a sand mill until the particle size D (90) of the pigment in the slurry is 1.3 μm. The above blue slurry, 300g of water-based pure acrylic emulsion, 8g of dispersant, 5g of wetting agent, 5.5g of defoamer, 3.5g of multifunctional auxiliary agent, 28g of film-forming auxiliary agent, and 3g of thickener are stirred at high speed in the disperser Mixing, the line speed is controlled at 8m / s, stirring for 35 minutes, adding 2.5g of pH regulator, stirring for 5 minutes to obtain the blue reflective thermal insulation coating topcoat C.

[0048] The test sample is first sprayed with a layer of primer with a thickness of 0.1mm to 0.15mm, and then spray...

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Abstract

The invention provides a natural partition lanthanum cerium oxide reflective heat-preservation coating and a preparation method thereof. The natural partition lanthanum cerium oxide reflective heat-preservation coating comprises a primer layer and a finish paint layer, the primer layer comprises the following parts: primer natural partition lanthanum cerium oxide, first water-based resin, a first pre-dispersing agent, a first auxiliary agent and deionized water; the finish paint layer comprises the following parts in percentage by mass: second water-based resin, a second pre-dispersing agent, a second auxiliary agent, finish paint natural partition lanthanum cerium oxide, infrared reflection pigment and deionized water. The natural partition lanthanum cerium oxide and the pigment adopted by the coating have high visible light and near-infrared light reflectivity, and a coating layer of the coating has high sunlight reflectivity, near-infrared reflectivity and hemispherical emissivity and can effectively reflect and block solar radiation and reduce the surface temperature and the interior temperature of a building. Meanwhile, the stain resistance is improved, the sunlight reflectivity change rate after pollution is less than 2%, and the stain resistance is 50% or above higher than that of a common reflective heat insulation coating.

Description

technical field [0001] The invention belongs to the field of coatings and preparation methods thereof, and in particular relates to a naturally partitioned lanthanum cerium oxide reflective heat-insulating coating and a preparation method thereof. Background technique [0002] Naturally partitioned lanthanum cerium oxide is a mixed oxide of naturally partitioned lanthanum oxide and cerium oxide in Baotou Baiyun Obo rare earth concentrate, with a high abundance and a mass content of 77%. It is an upstream product of high-purity lanthanum oxide and cerium oxide with low price. Naturally partitioned lanthanum cerium oxide lanthanum oxide dissolves in the cerium oxide lattice to form a solid solution, which has excellent chemical stability and high temperature stability, and is used in polishing, thermal barrier coating, catalysis and other fields. Lanthanum oxide and cerium oxide are usually added in small amounts in coatings to play anti-corrosion, antibacterial, self-cleaning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/33C09D5/29C09D5/14C09D7/61
CPCC09D133/04C09D5/004C09D5/29C09D5/14C09D7/61C08K2003/2213C08K2003/221C08K2003/2237C08K2003/2272C08K3/22
Inventor 张秀荣张呈祥赵长玉张光睿李璐郝先库温永清彭维周鑫喆王安丽
Owner TIANJIN BAOGANG RES INST OF RARE EARTHS
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