LTCC raw material tape material, LTCC substrate and preparation method

A technology of raw material tape and substrate, applied in the field of LTCC substrate and preparation, LTCC raw material tape material, can solve the problem of difficult to increase, mechanical strength and impact resistance are not enough to meet the application requirements of harsh conditions, unable to obtain high-strength LTCC substrate, etc. problem, to achieve the effect of increasing density, increasing strength, and uniform thickness

Inactive Publication Date: 2022-05-13
上海晶材新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a LTCC raw tape material, an LTCC substrate and a preparation method for solving the problem that the mechanical strength and impact resistance of the LTCC material in the prior art are not enough to meet harsh conditions. The problem of the application requirements under the conditions, and the LTCC raw belt material in the prior art is difficult to increase the Al 2 o 3 Ceramic or ZrO 2 The addition ratio of ceramics leads to the problem that high-strength LTCC substrates cannot be obtained

Method used

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  • LTCC raw material tape material, LTCC substrate and preparation method
  • LTCC raw material tape material, LTCC substrate and preparation method
  • LTCC raw material tape material, LTCC substrate and preparation method

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preparation example Construction

[0045] The present invention also provides a kind of preparation method of above-mentioned LTCC raw tape material, and the preparation method of LTCC raw tape material comprises the following steps:

[0046] S1, preparing CaAlSi glass ceramics;

[0047] S2, prepare sintering aid;

[0048] S3, CaAlSi glass-ceramic, sintering aid, Al 2 o 3 Ceramic, ZrO 2 Ceramics are added to the ball mill according to the mass ratio, then add solvent and dispersant and continue ball milling for 2 to 4 hours, such as 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, etc., add binder and plasticizer, and then ball mill for 2 to 4 hours , such as 2h, 2.5h, 3h, 3.5h, 4h, etc., after vacuum defoaming and tape casting, the LTCC raw tape material is obtained.

[0049] Concretely, adding plasticizer and binding agent can make cast slurry have cohesiveness and toughness, but in the present invention about plasticizer, binding agent specific composition and specific addition amount, do not do too much...

Embodiment 1

[0068] The present embodiment provides a kind of preparation method of LTCC raw tape material, comprises the following steps:

[0069] S1, the CaCO 3 、Al 2 o 3 , SiO 2 、H 3 BO 3 , ZrO 2 、TiO 2 , La 2 o 3 Mix according to the proportion, melt at 1450-1600°C for 3 hours, melt into glass liquid and then quench, then sand mill to control the powder particle size, dry at 100-120°C, filter through 400 mesh sieve to obtain D50 particle size 3.5-4.0μm CaAlSi glass-ceramics;

[0070] S2, the BaCO 3 、H 3 BO 3 , ZnO, SiO 2 Mix according to the proportion, melt at 1100-1200°C for 3 hours, melt into glass liquid and then quench, then sand mill to control the powder particle size, dry, and filter through 400 mesh sieve to obtain BBZS glass;

[0071] S3, CaAlSi glass ceramics, BBZS glass, Al 2 o 3 Ceramic, ZrO 2 The ceramics are added to the ball mill according to the mass ratio, and then the solvent and the dispersant are added to continue the ball milling and mixing for 3 ...

Embodiment 2

[0075] This embodiment provides a preparation method of LTCC raw tape material. The difference between the preparation method and Embodiment 1 is: CaAlSi glass-ceramic, BBZS glass, Al 2 o 3 Ceramic, ZrO 2 The proportioning between ceramics is different, in the present embodiment, by the mass percentage of inorganic material, inorganic material comprises: the Al of 36wt% 2 o 3 Ceramic, 34wt% ZrO 2 Ceramics, 28wt% CaAlSi glass-ceramic and 2wt% BBZS glass; other methods and steps are the same as in Example 1, and will not be repeated here.

[0076] This embodiment provides a method for preparing an LTCC substrate, which includes the following steps: providing the LTCC raw tape material prepared in this embodiment; laminating multiple layers of the LTCC raw tape material, and forming it by vacuuming and isostatic pressing. Green body, put the green body into the sintering furnace, raise the temperature from room temperature to 500 °C at a rate of 1 °C / min, keep it warm for 3 h...

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Abstract

The invention provides an LTCC raw material tape material, an LTCC substrate and a preparation method, and the LTCC raw material tape material comprises the following components in percentage by mass: 40-50 wt% of an inorganic material and 50-60 wt% of an organic material, the inorganic material comprises the following components in percentage by mass: 20 to 60 weight percent of Al2O3 ceramic, 10 to 50 weight percent of ZrO2 ceramic, 25 to 38 weight percent of CaAlSi microcrystalline glass and 0 to 3 weight percent of sintering aid; the organic material comprises an alcohol-ester mixed solvent, a dispersing agent, a binder and a plasticizer. Mixing the raw materials according to the mass ratio, and casting to obtain an LTCC raw material tape material; and after being subjected to overlying forming, the substrate is put into a sintering furnace to be roasted, and the LTCC substrate is obtained. The dielectric constant of the LTCC substrate is 7.0-8.3, the dielectric loss of the LTCC substrate is 0.003-0.005, the bending strength of the LTCC substrate is 300 MPa or above, and the LTCC substrate is good in cofiring matching performance with silver and gold electrode slurry.

Description

technical field [0001] The invention belongs to the field of low-temperature co-fired ceramic materials and their preparation, and in particular relates to an LTCC raw belt material, an LTCC substrate and a preparation method. Background technique [0002] LTCC (Low Temperature Co-fired Ceramics) materials refer to low temperature co-fired ceramic materials, which can be prepared into components such as LTCC components, LTCC functional devices, LTCC packaging substrates and LTCC module substrates by using the dielectric properties of microwave dielectric ceramics. [0003] In recent years, the scale of my country's LTCC market has maintained a rapid growth trend, especially with the development of 5G technology, there are more and more domestic manufacturers of LTCC devices, such as: Sunlord Electronics, Microgate Technology, Jiali Electronics, etc., the types of LTCC device specifications And more and more. Moreover, in the high-frequency communication fields such as aerosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B35/638
CPCC04B35/10C04B35/622C04B35/638C04B2235/3244C04B2235/36C04B2235/365C04B2235/6562C04B2235/6567C04B2235/96
Inventor 李自豪兰开东
Owner 上海晶材新材料科技有限公司
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