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Reflective heat-insulation lanthanum cerate color paste and preparation method thereof

A technology of lanthanum cerate and color paste, which is used in reflection/signal coatings, pigment pastes, paints containing biocides, etc., can solve problems such as being difficult to industrialize production, and achieve long-lasting antibacterial and antifungal effects, high stability, and high stability. Antibacterial and antifungal effect is remarkable

Pending Publication Date: 2021-12-17
TIANJIN BAOGANG RES INST OF RARE EARTHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above synthetic methods all adopt the sol-gel method to prepare nano-scale pigments, which is not easy for industrial production

Method used

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  • Reflective heat-insulation lanthanum cerate color paste and preparation method thereof

Examples

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preparation example Construction

[0040] The preparation method of reflective and heat-insulating lanthanum cerate color paste in the embodiment includes the following steps: mixing and stirring lanthanum cerate, dispersant, defoamer, and deionized water for pre-dispersion, and pumping it into a sand mill for grinding The lanthanum cerate D (90) is 2.2 μm; the above slurry and anti-settling agent are stirred at 650 rpm in a high-speed disperser, and the pH regulator is added to disperse at a high speed of 450 rpm to obtain a color paste.

[0041] The raw material proportioning of embodiment 1-5 and comparative example sees the following table:

[0042] Table 1 embodiment 1-5 and comparative example 1 formula table (percentage)

[0043]

[0044] The color paste that embodiment 1-5 and comparative example 1 obtains is tested, and test result is shown in the table below:

[0045] Table 2 embodiment 1-5 and comparative example 1 color paste performance index

[0046] project Example 1 Example 2 ...

Embodiment 6

[0049] The preparation method of the color paste in this example is as follows: 70% of ceric acid lanthanum, 1.5% of dispersant, 2.0% of defoamer, and 25.6% of deionized water are stirred for pre-dispersion according to the mass percentage, and then pumped into a sand mill for grinding until the lanthanum cerate D (90) is 2.2 μm; the above slurry, 0.5% anti-settling agent, and 0.2% inorganic yellow slurry are stirred at a high speed of 650 rpm for 10 minutes in a high-speed disperser, and 0.2% of a pH regulator is added to disperse at a high speed of 450 rpm for 5 minute.

Embodiment 7

[0056] The preparation method of the color paste in this embodiment is as follows: according to the mass percentage, 50% of lanthanum cerate slurry, 4% of rutile titanium dioxide, 4% of filler, 6% of hollow glass microspheres, and 22% of water-based pure acrylic emulsion , auxiliary agent 2%, and water 12% are stirred and mixed at high speed in a disperser to obtain a reflective heat-insulating coating with lanthanum cerate as the main pigment.

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Abstract

The invention provides reflective heat-insulation lanthanum cerate color paste and a preparation method thereof, and the reflective heat-insulation lanthanum cerate color paste comprises the following components in 100 parts by weight: 60 to 80 parts of lanthanum cerate; 1.0 to 3.0 parts of a dispersant; 1.0 to 3.0 parts of a defoaming agent; 0.3 to 1.0 part of an anti-settling agent; 0.1 to 0.3 part of a pH regulator; and 13 to 38 parts of deionized water. The color paste provided by the invention takes single lanthanum cerate as a reflective thermal insulation material, has high near-infrared reflectivity and excellent thermal insulation performance, can effectively reduce the surface and internal temperature of a building after being added into basic paint, and provides a new choice for a reflective material.

Description

technical field [0001] The invention belongs to the field of preparation of water-based color paste, and in particular relates to a reflective and heat-insulating lanthanum cerate color paste and a preparation method thereof. Background technique [0002] At present, white reflective heat insulation coatings on the market use rutile titanium dioxide as the main pigment, supplemented by mica powder, kaolin, talcum powder, alumina, hollow glass microspheres and other fillers to achieve the effect of reflective heat insulation. These coatings have near-infrared The disadvantages are low band reflectivity, high price of rutile titanium dioxide, and few colors. [0003] Lanthanum cerate is a stable fluorite structure with high thermal stability, low thermal conductivity and unique electronic layer structure, and is widely used in thermal barrier coating materials and near-infrared reflective pigments. Huang et al. disclosed a lanthanum cerate milky white pigment with high sunlig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C09D5/33C09D5/14
CPCC09D17/001C09D17/004C09D5/004C09D5/14
Inventor 张秀荣张呈祥郝先库张光睿赵长玉温永清李璐彭维周鑫喆王安丽
Owner TIANJIN BAOGANG RES INST OF RARE EARTHS
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