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Yellow pigment able to reflect near infrared rays and preparation method thereof

A technology of yellow pigments and near-infrared rays, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of rising surface temperature and increasing the cost of air conditioning and refrigeration, so as to improve performance, facilitate scale and The effect of industrial production and high thermal stability

Inactive Publication Date: 2016-05-04
SHAANXI UNIV OF TECH
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AI Technical Summary

Problems solved by technology

When the energy of sunlight is absorbed by the object it irradiates, heat will accumulate and cause the surface temperature of the object to rise. If a building in a city absorbs sunlight, its own temperature will rise while the heat will be transferred to the interior of the building. Raising the indoor temperature will also increase the cost of air conditioning and cooling

Method used

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  • Yellow pigment able to reflect near infrared rays and preparation method thereof
  • Yellow pigment able to reflect near infrared rays and preparation method thereof
  • Yellow pigment able to reflect near infrared rays and preparation method thereof

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preparation example Construction

[0037] The preparation method flow chart of the present invention can reflect near-infrared ray yellow pigment is as follows figure 1 As shown, two implementations are included.

[0038] first implementation

[0039] It is prepared by the main phase, the doping phase and the mineralizer according to the mass ratio, wherein the main phase is 80-98% titanium dioxide, the doping phase is 1-10% basic nickel carbonate and 1-10% antimony oxide The mineralizer is boric acid, and the boric acid accounts for 0.5-3wt% of the total mass of the main phase and the doping phase.

[0040] 1) Ingredients: mix 80-98% of titanium dioxide, 1-10% of basic nickel carbonate, and 1-10% of antimony oxide according to mole percentage, and then add 0.5-3wt% of mineralizer boric acid accounting for the total mass of the mixture ;

[0041] 2) Ball milling: put the weighed mixture in step 1) into a ball mill, and use wet ball milling for 3 hours;

[0042] 3) Grinding: drying and crushing the slurry af...

Embodiment 1

[0046] According to the molar percentages of 95%, 2%, and 3%, the main phase titanium dioxide, the doped phase basic nickel carbonate and antimony oxide were weighed respectively, and then the mineralizer boric acid was added, and the boric acid was 1 wt% of the total mass of the main phase and the doped phase. The weighed raw material samples were put into a ball mill and wet ball milled for 3 hours. During ball milling, acetone is used as the ball milling medium, the ball-to-material ratio is 4:1, and the material:acetone is 1:1. The slurry after ball milling is dried, crushed and then mixed and ground evenly. Then put the ground sample into a muffle furnace for sintering, and carry out a solid-phase synthesis reaction in an air atmosphere. The temperature is raised from room temperature at a rate of 5°C / min, and the temperature is raised to 1000°C, kept for 7 hours, and then Cool to room temperature at a cooling rate of 5°C / min. Finally, the powder is ground and passed th...

Embodiment 2

[0048]According to the molar percentages of 98%, 1%, and 1%, the main phase titanium dioxide, the doped phase basic nickel carbonate and antimony oxide were weighed respectively, and then the mineralizer boric acid was added, and the boric acid accounted for 3wt% of the total mass of the main phase and the doped phase. The weighed raw material samples were put into a ball mill and wet ball milled for 3 hours. During ball milling, acetone is used as the ball milling medium, the ball-to-material ratio is 4:1, and the material:acetone is 1:1. The slurry after ball milling is dried, crushed and then mixed and ground evenly. Then put the ground sample into a muffle furnace for sintering, and carry out a solid-phase synthesis reaction in an air atmosphere. The temperature is raised from room temperature at a rate of 5°C / min, and the temperature is raised to 1100°C, kept for 6 hours, and then Cool to room temperature at a cooling rate of 5°C / min. Finally, the powder is ground and p...

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Abstract

The invention discloses a yellow pigment able to reflect near infrared rays and a preparation method thereof. The pigment is prepared from a main phase, a doping phase and a mineralizing agent in a mass ratio. The main phase is titanium dioxide with a molar percentage content of 80-98%, the doping phase is 1-10% of basic nickel carbonate and 1-10% of antimony oxide, or 1-10% of iron oxide and 1-10% of magnesium oxide. The mineralizing agent is boric acid or boric acid and ammonium chloride, and accounts for 0.5-3wt% of the total mass of the main phase and the doping phase. The preparation method comprises: batching, ball milling, grinding, high temperature solid phase synthesis, grinding, sieving and other processes. The pigment product is an anatase phase structure, and the obtained product has very good thermal stability. The method provided by the invention is a high temperature solid phase synthesis process, and the equipment and operation are simple and practicable, thus being convenient for large-scale and industrialized production.

Description

technical field [0001] The invention belongs to the technical field of inorganic oxide pigments, and in particular relates to a titanium dioxide-based yellow near-infrared reflective pigment and a preparation method thereof. Background technique [0002] The spectrum of sunlight can be divided into three parts according to the size of the wavelength, and each part accounts for the total solar radiation energy: the wavelength range of ultraviolet region is 300-400nm, accounting for about 5% of the total energy of the sun, and the wavelength range of visible light region is 400-700nm, accounting for About 43% of the total energy of the sun, the wavelength range of the near infrared region is 700-2500nm, accounting for 52% of the total energy. When the energy of sunlight is absorbed by the object it irradiates, heat will accumulate and cause the surface temperature of the object to rise. If a building in a city absorbs sunlight, its own temperature will rise while the heat will...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/06C09C3/04
CPCC09C1/3623C09C1/3653C09C1/3692C09C3/006
Inventor 包维维张营堂邓志峰郝晓丽袁新强
Owner SHAANXI UNIV OF TECH
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