Composite zirconium oxide material and preparation method thereof

A zirconia and oxide technology, which is applied in the field of composite zirconia materials and its preparation, can solve the problems of dielectric constant, dielectric loss and dielectric properties that do not meet the application requirements of millimeter wave frequency band.

Active Publication Date: 2020-08-18
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a composite zirconia material and its preparation method to solve the problem that the dielectric properties such as dielectric constant and dielectric loss of the composite zirconia material in the prior art do not meet the application requirements of the millimeter wave frequency band

Method used

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  • Composite zirconium oxide material and preparation method thereof
  • Composite zirconium oxide material and preparation method thereof
  • Composite zirconium oxide material and preparation method thereof

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preparation example Construction

[0024] According to another aspect of the present invention, there is also provided a method for preparing the above-mentioned composite zirconia material, the preparation method comprising the following steps: according to the elemental composition of the composite zirconia material to be prepared, the zirconium salt and the salt of the doping element Mix to form a solid mixed salt; heat the solid mixed salt in a medium-temperature furnace to 400-500°C for low-temperature calcination to obtain a precursor; disperse the precursor in a planetary mill to obtain a dispersed precursor; disperse the precursor at 1000- High-temperature calcination at 1200°C to obtain a composite zirconia material.

[0025]In the above method provided by the present invention, specific doping elements are selected to dope zirconia. The uniformity of the finished product can be improved through solid powder mixing, low-temperature calcination and post-sand grinding dispersion, and then high-temperatur...

Embodiment 1

[0033] Weigh 200g of zirconium oxychloride and 6.22g of yttrium chloride respectively, put them into a crucible and mix them evenly, then add 0.99g of barium hydroxide, put them into a dry mixer, and disperse at a speed of 30r / s for 5h.

[0034] After mixing evenly, put it into a medium-temperature furnace, first keep it at 170°C for 2h, and then raise the temperature to 400°C within 1.5h and keep it at 2h to obtain the precursor. Disperse the precursor evenly in the planetary mill at a rotation speed of 250r / s for 30min, and then dry it.

[0035] After dispersion, the powder was put into a high-temperature furnace with exhaust gas, and calcined at 1000°C for 4 hours to obtain the final sample.

[0036] In the final sample, based on oxides, the doping amount of Y element in the composite zirconia material is 4.46%, and the doping amount of Ba element is 0.61%.

Embodiment 2

[0038] Compared with Example 1, the difference is that the addition of yttrium chloride is 1.63g, the addition of barium hydroxide is 2.43g, and other parameters are the same as in Example 1.

[0039] In the final sample, based on oxides, the doping amount of Y element in the composite zirconia material is 1.2%, and the doping amount of Ba element is 1.5%.

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Abstract

The invention provides a composite zirconium oxide material and a preparation method thereof. The composite zirconium oxide material is a zirconium oxide material doped with one or more doping elements of Al, Y, Ca, Ba, Mg, Ce and Ti. By doping the elements and controlling the content of each doped element within the range, on one hand, the crystal form structure of the zirconium oxide can be improved, so that the zirconium oxide shows better dielectric properties to meet the application requirements of millimeter wave frequency bands; on the other hand, the cost of the elements is relativelylow, and the production cost of the composite zirconium oxide material is saved. Meanwhile, the doping effect of the doping elements is relatively easier, the doping difficulty can also be reduced, and the formed material is more uniform in particle size and better in performance.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a composite zirconia material and a preparation method thereof. Background technique [0002] With the development of 5G technology, the signal bandwidth is larger and the transmission speed is faster. The spectrum above 3GHz will be used. The millimeter wave has shorter wavelength, poor penetration, large attenuation, and reduced coverage. The advent of the 5G era has led to changes and demands for materials. The emergence of new technologies puts forward new performance requirements for materials, including microwave dielectric ceramics, PCB materials, semiconductor materials, mobile phone antenna materials, heat conduction and heat dissipation materials, etc. will all occur in 5G applications. Change. [0003] For communication equipment, dielectric properties are one of the important indicators that affect its transmission speed and sensitivity. Since 5G will us...

Claims

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Application Information

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IPC IPC(8): C01G25/02C01G25/00
CPCC01G25/02C01G25/006C01P2002/52C01P2004/62C01P2006/12C01P2006/40
Inventor 宋锡滨赵莎王军焦英训
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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