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Nickel-doped multi-barium-titanate yellow solar heat reflection 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: 2019-10-11
SOUTHWEST UNIVERSITY
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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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  • Nickel-doped multi-barium-titanate yellow solar heat reflection pigment
  • Nickel-doped multi-barium-titanate yellow solar heat reflection pigment
  • Nickel-doped multi-barium-titanate yellow solar heat reflection pigment

Examples

Experimental program
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Effect test

Embodiment 1

[0034] And specifically in the present embodiment, the method for processing nickel-doped barium polytitanate yellow solar heat-reflecting pigments using the 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, and mix them uniformly by ball milling;

[0036] Step 2: Calcining at 1000°C for 4 hours, then cooling, and finally grinding, that is, 5% Ni-doped BaTi 5 o 11 yellow pigment;

[0037] figure 1 Prepare the XRD figure of pigment for this embodiment, the phase of matter of pigment is BaTi 5 o 11 ;

[0038] image 3 The UV-Vis-NIR reflectance diagram of this pigment shows that the sample has a strong reflectivity in the range of 500-2500nm, indicating that it can be used for solar heat reflective pigments;

[0039] Disperse the sample into PU to coat the surface of the bricks. After being irradiated by infrared light for 30 minutes, the te...

Embodiment 2

[0042] Implementation with above-mentioned: 1 difference is, use solid-phase method to process the method for nickel-doped barium polytitanate yellow solar heat reflective pigment in the present embodiment, 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 Examples 1-2, the solid-phase method is used in this example to process the nickel-doped barium polytitanate yellow solar heat-reflecting pigment, 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, and mix them uniformly by ball milling;

[0049] Step 2: Calcining at 1000°C 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] Example of liquid phase-solid phase method

[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 in;

[0053] The method for processing nickel-doped barium polytitanate yellow solar heat-reflecting pigments using a liquid-solid-phase combination method,...

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Abstract

The invention discloses a nickel-doped multi-barium-titanate yellow solar heat reflection pigment, and particularly relates to the field of new chemical materials. A phase of the pigment is one or a blend of more of BaTi5O11, BaTi4O9 or Ba2Ti9O20. The invention further provides a method for preparing the nickel-doped multi-barium-titanate yellow solar heat reflection pigment through a solid-phasemethod and a method for preparing the nickel-doped multi-barium-titanate yellow solar heat reflection pigment through a liquid-phase-solid-phase combination method. The phase of the pigment is one orthe blend of more of BaTi5O11, BaTi4O9 or Ba2Ti9O20, the content of alkaline-earth metal Ba in the phase is low, the use of the alkaline-earth metal Ba can be greatly lowered, and therefore, the influence of the use of a barium source on the environment in the preparing process can be reduced; moreover, a little Ni is doped in the phase of the pigment, the absorption of the Ni element in a near-infrared-light area can be lowered, and therefore, the prepared pigment has a high near-infrared-light reflectivity and can be applied to preparing solar heat reflection coatings.

Description

technical field [0001] The invention relates to the technical field of new chemical materials, more specifically, the invention relates to a yellow solar heat reflection pigment doped with nickel doped barium polytitanate. 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, thereby reducing the indoor comfort. This will directly increase energy consumption for indoor cooling, which is contrary to today's concept of energy-efficient buildings. "Cool roof" technology, that is, the application of solar heat reflective coatings on the surface of buildings can reduce the accumulation of solar heat, thereby reducing surface temperature. The application of this technology can greatly reduce the energy consumption for cooling in high temperature weather. [0003] "Cool roofs" based on solar heat-reflecting pigments can reduce solar heat build-up to lower surface temperatu...

Claims

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Application Information

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IPC IPC(8): C09D5/33
CPCC08K3/24C08K2201/014C09D5/004
Inventor 邹建
Owner SOUTHWEST UNIVERSITY