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A kind of preparation method of medium permittivity microwave dielectric ceramic material

A technology of microwave dielectric ceramics and electrical constants, which is applied in the field of low-temperature co-fired ceramic powder preparation, which can solve the problems of large sintering shrinkage, high preparation cost, and high mechanical strength, and achieve low sintering temperature and low production cost. , the effect of short production cycle

Active Publication Date: 2016-01-20
YUNNAN INFINE NEO MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation cost of the second method is high, the sintering shrinkage rate of the product is large, and it is easy to deform; the sintering system of the third material is easy to absorb silver due to the matrix, and the microwave performance is not very good, and the system is rarely used.
The main problem faced by medium dielectric constant LTCC materials is the contradiction between high performance (low dielectric loss, high mechanical strength) and low sintering temperature

Method used

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  • A kind of preparation method of medium permittivity microwave dielectric ceramic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 80gCa(OH) 2 , 10gLi 2 CO 3 , 100gNb 2 o 5 , 10gTiO 2 Mix, add 160g of deionized water and 400g of zirconia balls, and use wet ball milling for 10 hours; filter the ball-milled mixture, dry it at 120°C, and pre-fire it at 860°C, and grind it into 250μm green ceramic powder particles ;

[0029] Weigh 84.45gH 3 BO 3 , 15.55g ZnO, add 80g deionized water and 200g zirconia balls, use wet ball milling for 8 hours, filter the mixture after ball milling, dry at 110°C, then quench in molten water at 1500°C, and grind into 200μm Green porcelain powder particles;

[0030] Weigh 99g of raw porcelain powder and 1g of glass powder, add 50g of absolute ethanol and 200g of zirconia balls, and use wet ball milling for 12 hours; add 30ml of 5% PVB polymer binder aqueous solution, ball mill for 6 hours, mix evenly, and make The pellets are pressed into tablets; the pressed ceramic pieces are heated in a kiln-type sintering furnace at a heating rate of 2 °C / min to 500 °C for...

Embodiment 2

[0032] Weigh 86.6gCa(OH) 2 , 10.4gLi 2 CO 3 , 90.4gNb 2 o 5 , 12.6gTiO 2 Mix, add 160g of deionized water and 400g of zirconia balls, and use wet ball milling for 12 hours; filter the ball-milled mixture, dry it at 100°C, and then pre-fire it at 830°C, and grind it into 200μm green ceramic powder particles ;

[0033] Weigh 80.25gH 3 BO 3 , 19.75g ZnO, add 80g deionized water and 200g zirconia balls, use wet ball milling for 10 hours, filter the mixture after ball milling, dry at 105°C, then quench in molten water at 1450°C, and grind into 220μm Green porcelain powder particles;

[0034]Weigh 98g of raw porcelain powder and 2g of glass powder, add 50g of absolute ethanol and 200g of zirconia balls, and use wet ball milling for 10 hours; add 20ml of 15% PVA polymer binder aqueous solution, ball mill for 5 hours, mix evenly, and make The pellets are pressed into tablets; the pressed ceramic pieces are heated in a kiln-type sintering furnace at a heating rate of 2°C / min t...

Embodiment 3

[0036] Weigh 91gCa(OH) 2 , 13gLi 2 CO 3 , 83gNb 2 o 5 , 13gTiO 2 Mix, add 160g of deionized water and 400g of zirconia balls, and use wet ball milling for 10 hours; filter the ball-milled mixture, dry it at 120°C, and then pre-fire it at 850°C, and grind it into 280μm green ceramic powder particles ;

[0037] Weigh 78.45gH 3 BO 3 , 21.25g ZnO, add 80g deionized water and 200g zirconia balls, use wet ball milling for 9 hours, filter the mixture after ball milling, dry at 100°C, then quench in molten water at 1400°C, and grind into 260μm Green porcelain powder particles;

[0038] Weigh 97g of raw porcelain powder and 3g of glass powder, add 50g of absolute ethanol and 200g of zirconia balls, and use wet ball milling for 12 hours; add 40ml of 10% PVA polymer binder aqueous solution, ball mill for 4 hours, mix evenly, and make The pellets are pressed into tablets; the pressed ceramic pieces are heated in a kiln-type sintering furnace at a heating rate of 2°C / min to 500°C ...

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Abstract

The invention discloses a preparation method for synthesizing a microwave dielectric ceramic material with middle dielectric constant by adopting a solid phase synthesis method. According to the preparation method, procedures of compounding, ball milling, presintering, crushing, compounding, secondary ball milling, pelletizing and the like are carried out by adopting conventional technology and equipment in the low-temperature co-fired ceramic field, to obtain a ceramic powder material. The ceramic material has the advantages that raw materials are low, technology is simple and production cost is low. The ceramic material is mainly applied to mainly microwave strip line-oriented transmission lines, and novel plate type microwave devices such as a filter, a capacitor, a resonator and the like utilizing the lines and wavelengths of transmission lines and therefore has important development and research values and industrial application values.

Description

technical field [0001] The invention uses a solid-phase synthesis method to prepare a medium dielectric constant microwave dielectric ceramic material, and belongs to the technology for preparing raw porcelain powder in the field of low-temperature co-fired ceramics (LTCC). Background technique [0002] With the rapid development of modern information technology, higher and higher requirements are put forward for the miniaturization, portability, multi-function, high reliability and low cost of electronic products. Among many electronic materials, low temperature co-fired ceramic LTCC (LowTemperatureCo-firedCeramic) material has become a passive integrated material due to its low sintering temperature (not exceeding 900°C), high integration and good co-firing characteristics with Ag, Cu and other metal electrodes. An important development direction of dielectric materials. Low-temperature co-fired ceramic technology is an eye-catching multidisciplinary integrated component ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/465C04B35/622
Inventor 邢孟江
Owner YUNNAN INFINE NEO MATERIAL
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