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Infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material and preparation method thereof

A nano-composite material, titanium dioxide technology, applied in the directions of titanium oxide/hydroxide, titanium dioxide, zirconium oxide, etc., can solve the problems of complex preparation method, high cost, uneven doping, etc., and achieves simple and feasible process route. low cost effect

Active Publication Date: 2021-12-17
畅的新材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN105130411A discloses a preparation method of a titanium dioxide zirconia composite material, which is synthesized by a solid phase method, requires high-temperature calcination, coarse particles, uneven doping, and is mainly used for refractory materials; Chinese patent CN105110369A discloses a Titanium dioxide-coated zirconia materials also require high-temperature calcination, but the application field is refractory materials; Chinese patent CN105630697 discloses a preparation method of zirconia-coated titania sol, which has complex processes and high cost

Method used

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  • Infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material and preparation method thereof
  • Infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material and preparation method thereof
  • Infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] S1. Weigh 8gα-PbO 2 Phase titanium dioxide powder is added to 50ml of deionized water, and under 40KHz ultrasonic wave, disperse at a high speed of 500rpm for 15 minutes to obtain activated α-PbO 2 phase titanium dioxide powder suspension;

[0032] S2, take by weighing 36.7g zirconium acetate, be dissolved in 400ml ionic water solution, and stir evenly;

[0033] S3, adding S1-activated α-PbO to the S2 solution 2 Phase titanium dioxide powder suspension, keep stirring in the whole process, the speed of stirring is 400rpm, and the time is 30 minutes;

[0034] S4. Put the above-mentioned mixed solution into the delivery device, pump it into the supercritical pure fluid for reaction through the device, generate zirconia crystals and coat the surface of titanium dioxide, form microspheres with a core-shell structure, and improve α -PbO 2 The infrared reflection efficiency of phase titanium dioxide, the supercritical reaction temperature is 120 ° C, the pressure is 23 MPA...

Embodiment 2

[0037] S1. Weigh 8gα-PbO 2 Phase titanium dioxide powder is added to 50ml of deionized water, and under 40KHz ultrasonic wave, disperse at a high speed of 500rpm for 15 minutes to obtain activated α-PbO 2 phase titanium dioxide powder suspension;

[0038] S2, take by weighing 32.3g zirconium sulfate, be dissolved in 300ml ion aqueous solution, and stir evenly;

[0039] S3, adding S1-activated α-PbO to the solution in step S2 2 Phase titanium dioxide powder, keep stirring in the whole process, the speed of stirring is 400rpm, and the time is 30 minutes;

[0040] S4. Put the above-mentioned mixed solution into the delivery device, pump it into the supercritical pure fluid for reaction, generate zirconia crystals and coat the surface of titanium dioxide, form microspheres with a core-shell structure, and increase the concentration of α-PbO 2 The infrared reflection efficiency of phase titanium dioxide, the supercritical reaction temperature is 140°C, the pressure is 24MPA, and...

Embodiment 3

[0043] S1. Weigh 8gα-PbO2 Phase titanium dioxide powder is added to 50ml of deionized water, and under 40KHz ultrasonic wave, disperse at a high speed of 500rpm for 15 minutes to obtain activated α-PbO 2 phase titanium dioxide powder suspension;

[0044] S2, take by weighing 37.9g ​​zirconium nitrate, be dissolved in 400ml ion aqueous solution, and stir;

[0045] S3, adding S1-activated α-PbO to the solution in step S2 2 Phase titanium dioxide powder, keep stirring in the whole process, the speed of stirring is 400rpm, and the time is 30 minutes;

[0046] S4. Put the above-mentioned mixed solution into the delivery device, pump it into the supercritical pure fluid for reaction, generate zirconia crystals and coat the surface of titanium dioxide, form microspheres with core-shell structure, and increase the concentration of α-PbO 2 The infrared reflection efficiency of phase titanium dioxide, the supercritical reaction temperature is 160°C, the pressure is 25MPA, and the reac...

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Abstract

The invention discloses an infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material and a preparation method thereof, and belongs to the field of infrared reflection materials. The method comprises the following steps: S1, anatase type titanium dioxide is firstly converted into alpha-PbO2 phase titanium dioxide at 5-13 GPa and can be changed into a baddeleyite structure at 3-26 GPa, but after pressure is released to normal pressure, only the alpha-PbO2 phase titanium dioxide exists, the alpha-PbO2 phase titanium dioxide is in an orthorhombic crystal system, crystal parameters of the alpha-PbO2 phase titanium dioxide are related to pressure change, the interplanar spacing of 110 and 111 is 2.8 nm, the included angle of the crystal faces is 70.3, which is better than ordinary titanium dioxide, and the reflection efficiency of light in the near-infrared wavelength range is greatly improved. The zirconium salt is adopted as a zirconium ion source, the infrared reflection alpha-PbO2 phase titanium dioxide-zirconium oxide nano composite material is prepared, the cost is low, the process route is simple and easy to implement, and the infrared reflection material can be widely applied to the fields of coatings, plastics, daily necessities, medical treatment, spinning and the like.

Description

technical field [0001] The present invention relates to infrared reflective α-PbO 2 The invention relates to a titanium dioxide-zirconia nanocomposite material and a preparation method thereof, which belong to the field of infrared reflection materials. Background technique [0002] Most of the energy of sunlight is concentrated in the near-infrared and visible light ranges, and the energy in the near-infrared part of 700-2500nm accounts for about half of the energy in the solar spectrum. The heat generated by infrared heat radiation can be transmitted into buildings and cars through glass, resulting in increased energy consumption, especially in summer when the load of electric energy is increased. [0003] Scientific researchers have found that metal oxides have relatively high reflectivity for infrared light. Studies have shown that titanium dioxide has good reflectivity for light in the near-infrared wavelength range, and the performance is very good. Research in recent...

Claims

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Application Information

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IPC IPC(8): C01G25/02C01G23/047B82Y30/00
CPCC01G25/02C01G23/08B82Y30/00C01P2004/84C01P2004/03C01P2002/85C01P2002/82Y02P20/54
Inventor 郑克芳尤先锋张恒李曼李方园
Owner 畅的新材料科技(上海)有限公司
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