A kind of cerium oxide reflective thermal insulation coating and preparation method thereof
A technology of reflective heat-insulating coatings and cerium oxide, which is applied in the direction of reflection/signal coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problems of heat insulation effect decline, coating reflectivity reduction, temperature rise, etc., to achieve durability Effects of improved stain resistance, improved reflectivity, and low reflectivity
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Embodiment 1
[0032] The preparation method of primer comprises the following steps:
[0033] 200 g of deionized water, 8 g of a predispersant, and 400 g of cerium oxide were pre-dispersed with stirring, and ground with a sand mill for 15 minutes until the cerium oxide D(90) in the slurry was 1.2 μm. The above slurry is mixed with 300g of water-based pure acrylic emulsion, 8g of dispersant, 5g of wetting agent, 5.5g of defoamer, 1.5g of multifunctional auxiliary, 30g of film-forming auxiliary, and 3g of anti-settling agent in a dispersing machine. The line speed was controlled at 8 m / s, stirred for 35 minutes, added with 2.5 g of a pH adjuster, and stirred for 5 minutes to obtain a cerium oxide reflective heat-insulating paint primer.
[0034] The preparation method of topcoat comprises the following steps:
[0035] 200 g of deionized water, 6 g of pre-dispersant, 100 g of iron oxide yellow pigment, and 300 g of cerium oxide were stirred and pre-dispersed, and ground with a sand mill for 1...
Embodiment 2
[0039] The preparation method of the primer is the same as that in Example 1.
[0040] The preparation method of topcoat comprises the following steps:
[0041] 300 g of deionized water, 6 g of pre-dispersant, 80 g of red iron oxide pigment, and 320 g of cerium oxide were stirred and pre-dispersed, and ground with a sand mill for 10 minutes until the pigment particle size D(90) in the slurry was 1.5 μm. The red slurry is mixed with 300g of water-based pure acrylic emulsion, 8g of dispersant, 5g of wetting agent, 5.5g of defoamer, 1.5g of multifunctional auxiliary agent, 30g of film-forming auxiliary agent, and 3g of anti-settling agent in a dispersing machine. The line speed was controlled at 8 m / s, stirred for 35 minutes, added with 2.5 g of a pH adjuster, and stirred for 5 minutes to obtain a brick red reflective heat-insulating paint finish B.
[0042] The test sample is first sprayed with a layer of primer with a thickness of 0.1mm ~ 0.15mm, and then sprayed with a layer ...
Embodiment 3
[0045] The preparation method of the primer is the same as that in Example 1.
[0046]The preparation method of topcoat comprises the following steps:
[0047] 300 g of deionized water, 6 g of pre-dispersant, 60 g of iron oxide green pigment, and 240 g of cerium oxide were stirred and pre-dispersed, and ground with a sand mill for 10 minutes until the pigment particle size D(90) in the slurry was 1.3 μm. The above green slurry is mixed with 300g of water-based pure acrylic emulsion, 8g of dispersant, 5g of wetting agent, 5.5g of defoamer, 1.5g of multifunctional auxiliary, 30g of film-forming auxiliary, and 3g of anti-settling agent in a dispersing machine. , the line speed was controlled at 8m / s, stirred for 35 minutes, added 2.5g of pH adjuster, and stirred for 5 minutes to obtain green reflective thermal insulation paint topcoat 3.
[0048] The test sample is first sprayed with a layer of primer with a thickness of 0.1mm ~ 0.15mm, and then sprayed with a layer of topcoat C...
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