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A nickel-doped barium polytitanate yellow solar heat reflective pigment

A technology of polybarium titanate and reflective pigments, which is applied in the direction of reflective/signal coatings, etc., can solve the problems of limited application range, and achieve the effect of excellent color performance and high near-infrared reflectivity

Active Publication Date: 2021-07-09
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of a large amount of toxic elements such as chromium, cadmium and lead, the use of traditional yellow pigments is greatly limited, which requires the development of new environmentally friendly color pigments. Therefore, there is an urgent need for a non-toxic and highly Pigments with near-infrared reflectivity

Method used

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  • A nickel-doped barium polytitanate yellow solar heat reflective pigment
  • A nickel-doped barium polytitanate yellow solar heat reflective pigment
  • A nickel-doped barium polytitanate yellow solar heat reflective pigment

Examples

Experimental program
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Effect test

Embodiment 1

[0034] And specifically in this embodiment, the method for processing nickel-doped barium polytitanate yellow solar heat reflective pigment using solid-phase method, the specific processing steps are as follows:

[0035] Step 1, take 7.6 grams of titanium dioxide, 3.94 grams of barium carbonate and 0.375 grams of nickel oxide, ball mill and mix evenly;

[0036] Step 2, calcining at 1000 ℃ for 4 hours, then cooling, and finally grinding, that is, 5% Ni doped BaTi 5 O 11 yellow pigment;

[0037] figure 1 The XRD pattern of the pigment prepared in this example, the phase of the pigment is BaTi 5 O 11 ;

[0038] image 3 For the UV-Vis-NIR reflectance map of this pigment, the sample has a strong reflectivity in the range of 500-2500nm, indicating that it can be used as a solar heat-reflecting pigment;

[0039] Disperse the sample into PU and apply a film on the surface of the brick. After being illuminated by an infrared lamp for 30 minutes, the temperature of the back of t...

Embodiment 2

[0042] Different from above-mentioned implementation: 1, in the present embodiment, the method for processing nickel-doped barium polytitanate yellow solar heat reflective pigment using solid-phase method, and the concrete processing steps are as follows:

[0043] Step 1. Take 7.2 grams of titanium dioxide, 3.07 grams of barium oxide and 0.927 grams of nickel hydroxide, and mix them evenly by ball milling;

[0044] Step 2, calcining at 1100 °C for 2 hours, then cooling, and finally grinding, that is, 10% Ni-doped BaTi 5 O 11 Yellow paint.

[0045] The color properties of the obtained pigments are shown in Table 1.

Embodiment 3

[0047] Different from the above-mentioned embodiment 1-2, in this embodiment, the method for processing nickel-doped barium polytitanate yellow solar heat reflective pigment by solid-phase method is used, and the specific processing steps are as follows:

[0048] Step 1, take 7.6 grams of titanium dioxide, 4.3 grams of barium hydroxide and 0.594 grams of nickel carbonate, ball mill and mix uniformly;

[0049] Step 2, calcining at 1000 ℃ for 4 hours, then cooling, and finally grinding, that is, 5% Ni doped Ba 2 Ti 9 O 20 Yellow paint.

[0050] The color properties of the obtained pigments are shown in Table 1.

[0051] Liquid-Solid Phase Method Example

[0052] A nickel-doped barium polytitanate yellow solar heat reflective pigment, the phase used is BaTi 5 O 11 , BaTi 4 O 9 or Ba 2 Ti 9 O 20 one or more blends of;

[0053] A method for processing nickel-doped barium polytitanate yellow solar heat reflective pigment using a liquid phase-solid phase combination method,...

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Abstract

The invention discloses a nickel-doped barium polytitanate yellow solar heat reflection pigment, specifically relates to the field of new chemical materials, and the phase of the pigment is BaTi 5 o 11 、BaTi 4 o 9 or Ba 2 Ti 9 o 20 One or more blends in; the present invention also includes the method for preparing nickel-doped barium poly titanate yellow solar heat reflective pigment by solid phase method, and the liquid-solid phase combination method for preparing nickel-doped barium poly titanate Method of yellow solar heat reflective paint. The phase composition of the pigment of the present invention is BaTi 5 o 11 、BaTi 4 o 9 or Ba 2 Ti 9 o 20 One or more blends in the phase, the content of alkaline earth metal Ba in this phase is low, can greatly reduce the use of alkaline earth metal Ba, so can reduce the impact of the use of barium source in the preparation process on the environment, and Doping a small amount of Ni in the pigment phase can reduce the absorption of Ni element in the near-infrared region, so that the prepared pigment has high near-infrared reflectivity and can be applied to the preparation of solar heat reflective coatings.

Description

technical field [0001] The invention relates to the technical field of new chemical materials, and more particularly to a nickel-doped barium polytitanate yellow solar heat reflective pigment. Background technique [0002] In hot summer, the accumulation of solar heat on the building surface will directly lead to the increase of its surface temperature, thus reducing the indoor comfort. This will directly increase the energy consumption for indoor cooling, which is contrary to today's idea of ​​energy efficient buildings. "Cool roof" technology, that is, applying a coating with solar heat reflection on the surface of the building, can reduce the accumulation of solar heat and thus reduce the surface temperature. The application of this technology can greatly reduce the energy consumption for refrigeration in high temperature weather. [0003] "Cool roofs" based on solar heat-reflecting pigments can reduce the accumulation of solar heat to lower surface temperatures. Typic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/33
CPCC08K3/24C08K2201/014C09D5/004
Inventor 邹建
Owner SOUTHWEST UNIV
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