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High-frequency low-loss low-temperature co-burning ceramic raw material tape and preparation method thereof

A technology of low-temperature co-fired ceramics and raw material tape, which is applied in the direction of ceramics and inorganic insulators, can solve the problems of little research on raw material tape, single dielectric constant, and no practical application, etc., and achieves cost-saving preparation, uniform distribution, and The effect of compact structure

Active Publication Date: 2007-11-28
南京扬子工大科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of them are still in the stage of laboratory development, and the results with real intellectual property rights are almost blank.
Especially in CaO-B 2 o 3 -SiO 2 In terms of the system, the dielectric constant is relatively simple and there is little research on the tape casting of the system to prepare the raw tape, and it has not been really implemented in practical applications.

Method used

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  • High-frequency low-loss low-temperature co-burning ceramic raw material tape and preparation method thereof
  • High-frequency low-loss low-temperature co-burning ceramic raw material tape and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Table 1 shows the content of each component of the specific example 1 of the present invention. Weigh CaO (45wt%) and SiO respectively by mass percentage 2 (30wt%), B 2 o 3 (25wt%) and SiO 2 (71wt%), B 2 o 3 (26wt%), Na 2 O (0.5wt%), K 2 O (1wt%), Li 2 O (1.5wt%), mixed for 8 hours respectively, kept in a platinum crucible at 1500°C for 2 hours to make it completely melted and homogenized, poured into distilled water to obtain transparent calcium silicon boron, borosilicate cullet , the obtained cullet was subjected to wet ball milling (the mass ratio of glass to distilled water was 1:1, and the time was 24 h) to obtain calcium silicon boron and borosilicate glass powders with an average particle size of 2 μm. After tape casting and drying according to the formula in Table 1, the raw tape of the present invention is obtained. Wherein the nucleating agent composition is 50wt% TiO 2 and 50wt% ZrO 2 The solvent composition is 20wt% xylene, 38wt% ethanol and 42wt...

Embodiment 2

[0029] Table 3 shows the content of each component of the specific example 2 of the present invention. Weigh CaO (31wt%) and SiO respectively by mass percentage 2 (39wt%), B 2 o 3 (30wt%) and SiO 2 (75wt%), B 2 o 3 (21wt%), Na 2 O (1wt%), K 2 O (1.5wt%), Li 2O (1.5wt%), mixed for 8 hours respectively, kept in a platinum crucible at 1500°C for 2 hours to make it completely melted and homogenized, poured into distilled water to obtain transparent calcium silicon boron, borosilicate cullet , the obtained cullet was subjected to wet ball milling (the mass ratio of glass to distilled water was 1:1, and the time was 24 h) to obtain calcium silicon boron and borosilicate glass powders with an average particle size of 2 μm. After tape casting and drying according to the formula in Table 3, the raw tape of the present invention was obtained. Wherein the solvent composition is 15wt% xylene, 50wt% ethanol and 35wt% isopropanol; the defoaming agent is 60wt% n-butanol and 40wt% et...

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Abstract

The present invention relates to one kind of high frequency and low loss green ceramic material belt and its preparation process. The green ceramic material belt consists of inorganic glass ceramic material and organic flow casting system. The inorganic glass ceramic material consists of heterogenous Ca-Si-B and borosilicate glass ceramic and nucleating agent; and the organic flow casting system consists of solvent, dispersant, adhesive, plasticizer and defoaming agent. The 127 micron LTCC green ceramic material belt of the present invention is flat and smooth, has smallest winding radius without cracking of 15 mm, and may be sintered at about 850 deg.c to obtain sintered ceramic with excellent dielectric performance, including dielectric constant of 5-7 and dielectric loss lower than 0.002 at 10 GHz.

Description

technical field [0001] The invention relates to a high-frequency low-loss low-temperature co-fired ceramic raw material belt and a preparation method thereof, belonging to the field of ceramic materials. Background technique [0002] Low Temperature Co-fired Ceramics (LTCC, the abbreviation of Low Temperature Co-fired Ceramics) was originally a new material technology developed by Hughes Corporation in 1982 to achieve high integration and high performance electronic packaging technology. Offers great potential in terms of design flexibility, routing density and reliability. Compared with metal tungsten, manganese and molybdenum with high melting point and low conductivity wiring for high temperature co-fired ceramics at 1600 °C, LTCC uses silver and copper with low melting point and high conductivity, which is not only much cheaper, but also uses silver element wiring. The sintering process will not be oxidized and does not require atmosphere protection. At the same time, t...

Claims

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Application Information

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IPC IPC(8): C04B35/00C04B35/63C04B35/057C04B35/14H01B3/12
Inventor 周洪庆刘敏朱海奎吕安国
Owner 南京扬子工大科技有限公司
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