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Low-temperature co-fired glass-ceramic material for duplexer and preparation method thereof

A glass-ceramic, low-temperature co-firing technology, applied in waveguide-type devices, radiating element structures, circuits, etc., can solve problems such as high resonant frequency temperature coefficients

Active Publication Date: 2022-08-02
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ba 2 Ti 9 o 20 Although the glass-ceramic composite material formed with low melting point glass has a suitable dielectric constant and low dielectric loss, due to the high resonant frequency temperature coefficient (> 10×10 -6 / °C) to limit its application

Method used

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  • Low-temperature co-fired glass-ceramic material for duplexer and preparation method thereof
  • Low-temperature co-fired glass-ceramic material for duplexer and preparation method thereof
  • Low-temperature co-fired glass-ceramic material for duplexer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The low-temperature co-fired glass-ceramic material described in this embodiment, in terms of the total amount of its preparation raw materials, includes the following components in mass content:

[0053] Ba2Ti9O20 65wt%;

[0054] Sm2O3 5wt%;

[0055] Low melting point glass powder 30wt%;

[0056] Wherein, the low melting point glass powder includes the following components by weight:

[0057]

[0058]

[0059] The preparation method of the low-temperature co-fired glass-ceramic material described in this embodiment includes the following steps:

[0060] (1) According to the selected mass content ratio, weigh the BaCO of the corresponding weight 3 , TiO 2 , add water (material: water = 1: 1.2) and ammonium acrylate dispersant (accounting for 0.5wt% of the powder) and mix well, use a ball mill to mix for 3h, and after ball milling, use a horizontal sand mill (using 0.65mm zirconium ball) is further dispersed to obtain a uniformly dispersed slurry;

[0061] (2...

Embodiment 2

[0067] The low-temperature co-fired glass-ceramic material described in this embodiment, in terms of the total amount of its preparation raw materials, includes the following components in mass content:

[0068] Ba2Ti9O20 65wt%;

[0069] Sm2O3 10wt%;

[0070] Low melting point glass powder 25wt%;

[0071] Wherein, the low melting point glass powder includes the following components by weight:

[0072]

[0073] The preparation method of the low-temperature co-fired glass-ceramic material described in this embodiment includes the following steps:

[0074] (1) According to the selected mass ratio, weigh the corresponding weight of BaCO 3 , TiO 2 , add water (material: water = 1: 1.3) and ammonium acrylate dispersant (accounting for 0.7wt% of the powder) and mix well, use a ball mill to mix for 3h, and after ball milling, use a horizontal sand mill (using 0.65mm zirconium ball) is further dispersed to obtain a uniformly dispersed slurry;

[0075] (2) Use a spray dryer to ...

Embodiment 3

[0081] The low-temperature co-fired glass-ceramic material described in this embodiment, in terms of the total amount of its preparation raw materials, includes the following components in mass content:

[0082] Ba2Ti9O20 70wt%;

[0083] Sm2O3 5wt%;

[0084] Low melting point glass powder 25wt%;

[0085] Wherein, the low melting point glass powder includes the following components by weight:

[0086]

[0087] The preparation method of the low-temperature co-fired glass-ceramic material described in this embodiment includes the following steps:

[0088] (1) According to the selected mass content ratio, weigh the BaCO of the corresponding weight 3 , TiO 2 , add water (material: water = 1: 1.4) and ammonium acrylate dispersant (accounting for 0.6wt% of the powder) and mix well, use a ball mill to mix for 3h, and after ball milling, use a horizontal sand mill (using 0.65mm zirconium ball) is further dispersed to obtain a uniformly dispersed slurry;

[0089] (2) Use a spra...

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Abstract

A low-temperature co-fired glass-ceramic material, based on the total amount of its preparation raw materials, comprises the following components by mass: Ba 2 Ti 9 O 20 65‑70wt%; Sm 2 O 3 1-10wt%; low melting point glass powder 15-35wt%. Wherein, relative to the total weight of the low-melting glass powder, the low-melting glass powder includes the following components in parts by weight: ZnO 40-48 parts by weight; B 2 O 3 20‑30 parts by weight; SiO 2 10-20 parts by weight; Al 2 O 3 10-15 parts by weight; Li 2 O 2-10 parts by weight. The low-temperature co-fired glass-ceramic material of the present invention has a resonant frequency temperature coefficient close to zero, and the material loss tangent value is less than 2×10 ‑3 , The dielectric constant is about 20, which meets the use requirements of sub6GHz microwave devices; and the sintering temperature is low.

Description

technical field [0001] The invention belongs to the technical field of low-temperature co-fired glass-ceramic materials, in particular to a ceramic material with high density, medium dielectric constant, low dielectric loss, and near-zero resonance frequency coefficient and a preparation method thereof. The low-temperature co-fired glass-ceramic material can be used to manufacture components such as dielectric filters, dielectric antennas, and duplexers in the field of electronic communications. Background technique [0002] Low temperature co-fired ceramic (LTCC) is to make low temperature sintered ceramic powder into a green ceramic tape with precise and dense thickness, and then make circuit patterns on the green ceramic tape through a series of processes, and embed multiple passive components in it , lamination and sintering, so as to prepare electronic components with miniaturization, light weight and high performance. [0003] The low-temperature co-fired ceramics dev...

Claims

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Application Information

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IPC IPC(8): C04B35/468H01P1/20H01Q1/36C03B1/00C04B35/626C03C6/04C03C12/00C04B35/64
CPCC04B35/468H01P1/2002H01Q1/36C03B1/00C04B35/62675C03C1/00C03C12/00C04B35/64C04B2235/3224C04B2235/36C04B2235/96C04B2235/77
Inventor 宋锡滨刘振锋闫鑫升艾辽东奚洪亮
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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