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A kind of bmt-bzt composite new microwave dielectric ceramic material and preparation method thereof

A technology of BMT-BZT and microwave dielectric ceramics, which is applied in the field of BMT-BZT composite new microwave dielectric ceramic materials and its preparation, can solve the problems of reducing the firing temperature of composite materials, reduce the difficulty of sintering, promote the compact accumulation of space, and improve the The effect of dielectric properties

Active Publication Date: 2022-07-19
山西省玻璃陶瓷科学研究所(有限公司)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention utilizes the two-phase composite of BMT material and BZT material, introduces manganese carbonate to modify the composite material at the same time, improves the microwave dielectric properties of the composite material; introduces a glass sintering aid to solve the problem of difficult sintering, and reduces the sintering of the composite material. temperature, so that BMT-BZT composite new microwave dielectric ceramic material has extremely high value in 5G filter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A new type of BMT-BZT composite microwave dielectric ceramic material, based on the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0033] Tantalum pentoxide 20%, barium carbonate 55%, magnesium oxide 15%, zinc oxide 5.992%, manganese carbonate 3.2%, lanthanum oxide 0.004%, boric acid 0.004%, polyvinyl alcohol 0.8%.

[0034] The preparation method of the BMT-BZT composite new microwave dielectric ceramic material, the steps are as follows:

[0035] (1) Tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide are weighed and mixed in proportion to obtain powder A, and powder A is in the ratio of powder: deionized water: zirconium ball=1:1.5:5 Put it into a ball-milling tank, and mill it for 4 hours at a rotational speed of 300 r / min to obtain a ball-milled slurry B;

[0036] (2) drying the ball milling slurry B obtained in step (1), passing through a 120-mesh sieve, putting it into an alumina crucible, placin...

Embodiment 2

[0044] A new type of BMT-BZT composite microwave dielectric ceramic material, based on the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0045] Tantalum pentoxide 14%, barium carbonate 63%, magnesium oxide 17%, zinc oxide 2.97%, manganese carbonate 2%, lanthanum oxide 0.015%, boric acid 0.015%, polyvinyl alcohol 1%.

[0046]The preparation method of the BMT-BZT composite new microwave dielectric ceramic material, the steps are as follows:

[0047] (1) Tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide are weighed and mixed in proportion to obtain powder A, and powder A is in the ratio of powder: deionized water: zirconium ball=1:1.5:5 Put it into a ball-milling tank, and mill it for 7 hours at a rotational speed of 200 r / min to obtain a ball-milled slurry B;

[0048] (2) drying the ball milling slurry B obtained in step (1), passing through a 120-mesh sieve, putting it into an alumina crucible, placing the ...

Embodiment 3

[0056] A new type of BMT-BZT composite microwave dielectric ceramic material, based on the total mass of the composite ceramic material as 100%, the components and their percentages are:

[0057] Tantalum pentoxide 24%, barium carbonate 53%, magnesium oxide 12.2%, zinc oxide 3.948%, manganese carbonate 4.8%, lanthanum oxide 0.026%, boric acid 0.026%, polyvinyl alcohol 2%.

[0058] The preparation method of the BMT-BZT composite new microwave dielectric ceramic material, the steps are as follows:

[0059] (1) Tantalum pentoxide, barium carbonate, magnesium oxide and zinc oxide are weighed and mixed in proportion to obtain powder A, and powder A is in the ratio of powder: deionized water: zirconium ball=1:1.5:5 Put it into a ball-milling tank, and mill it for 5 hours at a rotational speed of 350 r / min to obtain a ball-milled slurry B.

[0060] (2) drying the ball milling slurry B obtained in step (1), passing through a 120-mesh sieve, putting it into an alumina crucible, placin...

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Abstract

The invention relates to a BMT-BZT composite novel microwave dielectric ceramic material and a preparation method thereof, belonging to the technical field of microwave dielectric ceramics. Tantalum pentoxide, barium carbonate, magnesium oxide, zinc oxide, manganese carbonate, lanthanum oxide, boric acid and polyvinyl alcohol are used as raw materials. The steps of the preparation method are as follows: through the preparation of the above-mentioned raw materials, powder A, ball milling slurry B, pre-sintered powder C, ball milling slurry D, sintering-reducing agent powder E, mixed powder F, and green body G are obtained; The green body G was put into a sintering furnace for sintering, kept warm, and then cooled with the furnace to obtain a BMT-BZT composite new microwave dielectric ceramic material. The invention utilizes two-phase composite of BMT material and BZT material, and introduces manganese carbonate to modify the composite material at the same time, so as to improve the microwave dielectric properties of the composite material; for the problem of difficult sintering, a glass sintering aid is introduced to reduce the sintering of the composite material. The formation temperature makes the BMT‑BZT composite new microwave dielectric ceramic material extremely valuable in 5G filters.

Description

technical field [0001] The invention belongs to the technical field of microwave dielectric ceramics, in particular to a BMT-BZT composite novel microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] With the official commercial use of 5G, 5G base stations across the country will also be covered in one piece, and microwave dielectric ceramics as filter materials are also widely used in the construction of 5G base stations. Ceramic filters can not only ensure high power output, but also have the characteristics of light weight, good temperature resistance, long service life and miniaturization, and are more suitable for the development requirements of high integration and miniaturization of 5G base stations. [0003] At this stage, the application and research of microwave dielectric ceramics in the field of 5G mobile communication is still in the development stage, mainly because microwave dielectric ceramic materials need to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/01C04B35/626C04B35/634C04B35/64
CPCC04B35/01C04B35/6261C04B35/63416C04B35/64C04B2235/3251C04B2235/3206C04B2235/3284C04B2235/3262C04B2235/3227C04B2235/3409C04B2235/6562
Inventor 孟凡然王琨冯荣成龙胜杨尚权
Owner 山西省玻璃陶瓷科学研究所(有限公司)
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