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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, many challenges such as spectrum resource shortage, high energy consumption, and high cost also make operators face more severe cost pressures

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
Comparison scheme
Effect test

Embodiment 1

[0042] (1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 o 3 -e / 2Al 2 o 3 , weighed 5.38kg of strontium carbonate, 2.91kg of titanium dioxide, 0kg of calcium carbonate, 8.91kg of lanthanum oxide, and 2.79kg of alumina, and mixed them to obtain the first mixture; : The mass ratio of 0.5 is sanded with a sand mill for 2h to make the mixture uniform;

[0043] (2) The material is discharged, spray-dried at 220°C in a spray drying tower, then pre-fired at a temperature of 1150°C for 5 hours, and the heating rate is 3°C / min, and cooled with the furnace to obtain the first pre-fired material;

[0044] (3) Get the pulverized first calcined material 16kg, modified additive lanthanum oxide 48g, mix to obtain the first calcined mixed material; mix the first calcined mixed material, deionized water and zirconia balls with 1: The mass ratio of 2:0.5 is sanded with a sand mill for 0.5h to make the mixture even;

[0045] (4) Discharging, adding 1.5wt% polyvinyl ...

Embodiment 2

[0048] (1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 o 3 -e / 2Al 2 o 3 , take by weighing strontium carbonate 5.23kg, titanium dioxide 2.87kg, calcium carbonate 0.05kg, lanthanum oxide 9.09kg, aluminum oxide 2.75kg, mix and obtain the first mixture; The first mixture, deionized water and zirconia balls are mixed with 1: The mass ratio of 2:0.5 is sanded with a sand mill for 1 hour to make the mixture even;

[0049] (2) The material is discharged, spray-dried at 220°C in a spray drying tower, then pre-fired at a temperature of 1300°C for 5 hours, the heating rate is 3°C / min, and cooled with the furnace to obtain the second pre-fired material;

[0050] (3) Get the second calcined material 16kg after pulverizing, modifying additive neodymium oxide 48g and samarium oxide 48g, mix to obtain the second calcined mixed material; mix the second calcined mixed material, deionized water and zirconium oxide The balls are sanded with a sand mill for 2 hours ...

Embodiment 3

[0054](1) According to the chemical expression, it is aSrO-bTiO 2 -cCaO-d / 2Ln 2 o 3 -e / 2Al 2 o 3 , weighed 6.69kg of strontium carbonate, 3.62kg of titanium dioxide, 0kg of calcium carbonate, 7.38kg of lanthanum oxide, and 2.31kg of alumina, and mixed them to obtain the first mixture; : The mass ratio of 0.5 is sanded with a sand mill for 0.5h to make the mixture uniform;

[0055] (2) The material is discharged, spray-dried at 220°C in a spray drying tower, then pre-fired at a temperature of 1300°C for 5 hours, and the heating rate is 3°C / min, and cooled with the furnace to obtain the third pre-fired material;

[0056] (3) Get the 3rd calcined material 16kg after pulverizing, modified additive manganese oxide 72g, mix and obtain the 3rd calcined mixed material; After the 3rd calcined mixed material, deionized water and zirconia ball with 1: The mass ratio of 2:0.5 is sanded with a sand mill for 2 hours to make the mixture even;

[0057] (4) Discharging, adding 1.5wt% pol...

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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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