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Preparation method for violet pigment capable of reflecting infrared ray, and heat-isolating paint

A technology of purple pigments and infrared rays, which is applied in the field of preparation of purple pigments, can solve the problems of complex preparation process, insufficient infrared reflection performance, and no discovery of purple heat-shielding pigments, etc., and achieve the effect of less investment in equipment

Inactive Publication Date: 2013-10-16
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a small amount of infrared reflective pigments have been developed, such as U.S. patents US6416868, US20090223414, US6221147, and US6541112, which report black, brown, blue or green pigments containing transition metal elements or rare earth elements, but these pigments have complex preparation processes Or its infrared reflection performance is not good enough and other defects
So far, no research has been reported on the preparation of purple heat-shielding pigments with the function of reflecting infrared rays by the method of doping-tinting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The matrix raw materials of the following components are weighed according to the mass ratio: aluminum oxide: cobaltous oxide: magnesium oxide: titanium dioxide: zinc oxide = 100:40:27:3.5:2. The above-mentioned weighed raw materials are put into a ball mill, mixed and ground evenly by dry method. The mixed and ground mixture was calcined at 900° C. for 3 hours, and the crude product was obtained after cooling. Weigh the crude product and ferric oxide at a mass ratio of 100:4, put them into a ball mill, dry mix and grind them into powder, and then obtain a purple pigment with the function of reflecting infrared rays.

Embodiment 2

[0016] The matrix raw materials of the following components are weighed according to the mass ratio: aluminum oxide: cobaltous oxide: magnesium oxide: titanium dioxide: zinc oxide = 100: 35: 20: 5: 3.5. The above-mentioned weighed raw materials are put into a ball mill, mixed and ground evenly by dry method. The mixed and ground mixture was calcined at 950° C. for 2 hours, and the crude product was obtained after cooling. Weigh the crude product and ferric oxide at a mass ratio of 100:5, put them into a ball mill, dry mix and grind them into powder, and then obtain a purple pigment with the function of reflecting infrared rays.

Embodiment 3

[0018] The matrix raw materials of the following components are weighed according to the mass ratio: aluminum oxide: cobaltous oxide: magnesium oxide: titanium dioxide: zinc oxide = 100:32:25:3:4. The above-mentioned weighed raw materials are put into a ball mill, mixed and ground evenly by dry method. The mixed and ground mixture was calcined at 850° C. for 4 hours, and the crude product was obtained after cooling. Weigh the crude product and ferric oxide at a mass ratio of 100:3, put them into a ball mill, dry mix and grind them into powder, and then obtain a purple pigment with the function of reflecting infrared rays.

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Abstract

The invention discloses a preparation method for a violet pigment capable of reflecting infrared ray, and a heat-isolating paint. The preparation method comprises the following steps of: weighing aluminium oxide, cobaltous oxide, magnesium oxide, titanium dioxide and zinc oxide in a certain mass ratio, ball-milling and uniformly mixing; calcining the grinded mixture for 2-4 hours at 850-950 DEG C, cooling the mixture, and then mixing the mixture with a certain amount of ferric oxide, then ball-milling into a powder, and uniformly mixing the powder with a common alkyd varnish in a weight ratio of 1:9, wherein the obtained heat-isolating paint is capable of obviously reflecting the heat of infrared ray in the sunlight. In addition, the method disclosed by the invention is less in equipment investment, simple in preparation process and easy to operate, thus being suitable for large-scale industrialized production.

Description

technical field [0001] The invention relates to a preparation method of a purple pigment with the function of reflecting infrared rays, and a heat-insulating paint prepared with the pigment. Background technique [0002] The car shell sprayed with paint containing dark pigments is more resistant to dirt, but the dark car shell easily absorbs heat in the sun, making the temperature inside the car easy to rise and causing discomfort to people. The heat in the sun is mainly transmitted by infrared rays. If the dark pigments with the function of reflecting infrared rays are used to replace the ordinary dark pigments in the car shell coating, the temperature inside the car will not rise too fast, especially in summer. , can greatly reduce the load of automobile air conditioners, so as to achieve the purpose of energy saving, emission reduction and environmental protection. At present, a small amount of infrared reflective pigments have been developed, such as U.S. patents US6416...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/06C09D5/33C09D167/08
Inventor 杨晓明袁新强冯小明张营堂李雷权
Owner SHAANXI UNIV OF TECH
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