STLA microwave dielectric ceramic material and preparation method and application thereof

A microwave dielectric ceramic and sanding technology, applied in the field of new materials and microwave communication, can solve the problems of high energy consumption, tight spectrum resources, high cost, etc., and achieve the effects of excellent performance, good uniformity, and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2016-03-16
GUANGDONG GOVA ADVANCED MATERIAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, many challenges such as spectrum resource shortage, high energ

Method used

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  • STLA microwave dielectric ceramic material and preparation method and application thereof
  • STLA microwave dielectric ceramic material and preparation method and application thereof
  • STLA microwave dielectric ceramic material and preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0041] Example 1

[0042] (1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 O 3 -e / 2Al 2 O 3 , Weigh 5.38 kg of strontium carbonate, 2.91 kg of titanium dioxide, 0 kg of calcium carbonate, 8.91 kg of lanthanum oxide, and 2.79 kg of alumina, and mix to obtain the first mixture; the first mixture, deionized water and zirconia balls are 1:2 : 0.5 mass ratio, use sand mill for 2h to make the mixing uniform;

[0043] (2) Discharging, spray drying with a spray drying tower at 220°C, and then pre-burning at a temperature of 1150°C for 5 hours with a heating rate of 3°C / min, and cooling with the furnace to obtain the first pre-burned material;

[0044] (3) Take 16 kg of the crushed first pre-fired material and 48 g of modified additive lanthanum oxide, and mix them to obtain the first pre-fired mixture; combine the first pre-fired mixture, deionized water and zirconia balls at 1: 2: 0.5 mass ratio, use a sand mill for 0.5h to make the mixing uniform;

[0045] (4) Disc...

Example Embodiment

[0047] Example 2

[0048] (1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 O 3 -e / 2Al 2 O 3 , Weigh 5.23 kg of strontium carbonate, 2.87 kg of titanium dioxide, 0.05 kg of calcium carbonate, 9.09 kg of lanthanum oxide, and 2.75 kg of alumina, and mix to obtain the first mixture; combine the first mixture, deionized water and zirconia balls at 1: 2: 0.5 mass ratio, use a sand mill for 1h to make the mixing uniform;

[0049] (2) Discharging, spray drying with a spray drying tower at 220°C, and then pre-burning at a temperature of 1300°C for 5 hours with a heating rate of 3°C / min, and cooling with the furnace to obtain the second pre-burned material;

[0050] (3) Take 16 kg of the crushed second pre-fired material, 48 g of modified additive neodymium oxide and 48 g of samarium oxide, and mix to obtain the second pre-fired mixture; combine the second pre-fired mixture, deionized water and zirconia The balls are sanded with a sand mill for 2 hours with a mass rat...

Example Embodiment

[0053] Example 3

[0054] (1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 O 3 -e / 2Al 2 O 3 , Weigh 6.69 kg of strontium carbonate, 3.62 kg of titanium dioxide, 0 kg of calcium carbonate, 7.38 kg of lanthanum oxide, and 2.31 kg of alumina, and mix them to obtain the first mixture; the first mixture, deionized water and zirconia balls are 1:2 : 0.5 mass ratio, use a sand mill for 0.5h to make the mixing uniform;

[0055] (2) Discharging, spray drying with a spray drying tower at 220°C, and then pre-burning at a temperature of 1300°C for 5 hours with a heating rate of 3°C / min, and cooling with the furnace to obtain the third pre-burned material;

[0056] (3) Take 16 kg of the pulverized third pre-sintered material and 72 g of modified additive manganese oxide, and mix to obtain the third pre-sintered mixture; combine the third pre-sintered mixture, deionized water and zirconia balls at 1: 2: 0.5 mass ratio, sanding with a sand mill for 2 hours to make the mixi...

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Abstract

The invention belongs to the field of new materials and microwave communication, and in particular, relates to an STLA microwave dielectric ceramic material and a preparation method and an application thereof. The STLA microwave dielectric ceramic material has main crystal structure of a perovskite structure, and has the chemical expression of aSrO-bTiO2-cCaO-d/2Ln2O3-e/2Al2O3, wherein Ln is at least one of rare earths La, Nd and Sm. The preparation method comprises the steps: according to the stoichiometric ratio of the main crystal phase structure, taking strontium carbonate, titanium dioxide, calcium carbonate, rare earth oxide and aluminum oxide, and sanding to mix the raw materials uniformly; then carrying out spray drying, and pre-sintering; smashing, adding a modification additive or adding no modification additive, and again sanding to mix uniformly; carrying out spray granulation, sieving, and carrying out compression molding; and finally, sintering to obtain the STLA microwave dielectric ceramic material. The microwave dielectric ceramic material can be applied to the fields of new materials, microwave communication and the like.

Description

technical field [0001] The invention belongs to the field of new materials and microwave communication, and in particular relates to a STLA microwave dielectric ceramic material and its preparation method and application. Background technique [0002] As a next-generation mobile communication technology, LTE has become an inevitable path for communication operators to develop future communication networks. GSA predicts that by the end of 2015, the total number of global LTE commercial networks will exceed 460. As of June 2015, the number of global LTE users exceeds 776 million. As of the end of June 2015, the cumulative number of 4G users in China exceeded 234 million, and the penetration rate of domestic 4G users reached 18.1%. In the second quarter of 2015, China's 4G base station shipments reached 1.34 million, accounting for 50.19% of the global 4G base station shipments. China is still the country with the largest scale and most users of 4G network operators in the wo...

Claims

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Application Information

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IPC IPC(8): C04B35/50C04B35/47C04B35/622
CPCC04B35/50C04B35/47C04B35/622C04B2235/3208C04B2235/3215C04B2235/3217C04B2235/3227C04B2235/3229C04B2235/3267C04B2235/768C04B2235/96
Inventor 吕开明
Owner GUANGDONG GOVA ADVANCED MATERIAL TECH
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