Low-temperature co-fired ceramic material with low dielectric constant and low loss and preparation method thereof

A technology of low-temperature co-fired ceramics and low dielectric constant, applied in the field of low-temperature co-fired ceramics, can solve the problems of deterioration of material properties and process applicability, difficult to scale up production, difficult to grind and fine processing, etc. agent, beneficial to industrial production, and the effect of excellent insulation performance

Active Publication Date: 2020-12-25
BEIJING YUANLIU HONGYUAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used glass sintering aids have complex components and high production costs, and require professional equipment for high-temperature melting and refining of glass. The heat treatment takes a long time, consumes a lot of energy, and is not easy to scale up production.
Moreover, the cold quenching process of glass has a large loss of equipment, the glass slag after quenching has high hardness, it is difficult to grind, the shape of the glass is poor, and the process adaptability is not good
Adding too much low-melting oxide directly will directly deteriorate the material performance and process applicability, and it is difficult to meet the requirements of industrial applications. Therefore, the selection of suitable low-sintering aids and matching microwave ceramic matrix materials is the key to the development of LTCC ceramics

Method used

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  • Low-temperature co-fired ceramic material with low dielectric constant and low loss and preparation method thereof
  • Low-temperature co-fired ceramic material with low dielectric constant and low loss and preparation method thereof
  • Low-temperature co-fired ceramic material with low dielectric constant and low loss and preparation method thereof

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preparation example Construction

[0040] The invention provides a method for preparing a low-dielectric constant and low-loss low-temperature co-fired ceramic material, comprising:

[0041] Step 1. Weigh 10-40 parts by mass of Al 2 o 3 , 0 to 40 parts by mass of SiO 2 , 0-60 parts by mass of powder A, 0-60 parts by mass of powder B, 8-30 parts by mass of powder C and 0-0.5 parts by mass of toner, the toner is Co 3 o 4 , MnO 2 、Cr 2 o 3 and SrCO 3 One or more of them, the coloring material can be added or not according to the needs, put the prepared powder into the ball mill for mixing, the ball / material mass ratio is 2-10, and the grinding ball is zirconia ball , the ball milling time is 4 to 8 hours, the speed is 250 to 450 rpm, the powder after ball milling is put into an oven and dried at 120°C, and the powder is ground and passed through a 100-mesh sieve;

[0042] Step 2, take 2 grams of the above powder, add 15-20 drops of PVA aqueous solution (6.5wt% polyvinyl alcohol) to bond and granulate, and ...

Embodiment

[0054] The present invention calculates the formula according to the number of parts by mass, and specific examples are shown in Table 1. Use analytically pure Al 2 o 3 , SiO 2 and solid-phase synthesized powders A, B and C, where Al 2 o 3 The mass parts are 10-40, SiO 2 The mass parts of powder A are 0-40, the powder A is calcined body, its mass parts are 0-60, and the components of powder A are 40-70 mass parts of Bi 2 o 3 , 10-30 parts by mass of ZnO, 15-45 parts by mass of H 3 BO 3 ; When in use, it can be in Bi 2 o 3 , ZnO, H 3 BO 3 Prepare powder A within the mass range, the preferred component of powder A in table 1 is the Bi of 60 mass parts 2 o 3 , 20 parts by mass of ZnO, 20 parts by mass of H 3 BO 3 , Bi of other components 2 o 3 , ZnO, H 3 BO 3 All can meet the requirements, so I will not elaborate here; powder B is a calcined body, its mass part is 0-60, and its components are BaO precursor, CuO and H in a molar ratio of 1:1:2. 3 BO 3 ; Powder...

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Abstract

The invention discloses a low-dielectric constant low-loss low-temperature co-fired ceramic material and a preparation method thereof. The ceramic material comprises the following components in partsby mass: 10-40 parts of Al2O3, 0-40 parts of SiO2, 0-60 parts of powder A, 0-60 parts of powder B, and 8-30 parts of powder C, and the material has at least one of the powder A and the powder B; the powder A comprises the following raw materials by parts: 40-70 parts of Bi2O3, 10-30 parts of ZnO, and 15-45 parts of H3BO3; the powder B comprises the following raw materials: a BaO precursor, CuO andH3BO3 which have a mol ratio being 1:1:2; and the powder C comprises the following raw materials: MgO and SiO2 which have the mol ratio being 2:1. The preparation method comprises the following steps: mixing the raw materials in proportion, performing steps of ball milling, drying, granulation, tabletting, glue discharging and sintering, and finally preparing the low-temperature co-fired ceramicmaterial which has the advantages that the dielectric constant is adjustable in a scope of 5.2-10, the dielectric loss is less than 0.002, and the insulation resistivity is higher than 1*1014 omega.cm.

Description

technical field [0001] The invention relates to the technical field of low-temperature co-fired ceramics, in particular to a low-dielectric constant and low-loss low-temperature co-fired ceramic material and a preparation method thereof. Background technique [0002] Low temperature co-fired ceramics (Low Temperature Co-fired Ceramic, LTCC) are prepared on green ceramic belts made of low temperature co-fired ceramic powder through laser drilling, microporous grouting, precision conductor printing and other processes. The circuit, and then multiple passive components (such as capacitors, resistors, filters, couplers, etc.) are embedded in the substrate through the lamination of green ceramic tapes, and finally sintered at a temperature below 900 ° C to form a three-dimensional network structure. Passive integrated components can also be made into active / passive integrated functional modules by mounting ICs and active devices on its surface. Due to the excellent performance o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/626C04B35/622C04B35/01C04B35/453
CPCC04B35/01C04B35/10C04B35/453C04B35/622C04B35/62645C04B35/62675C04B2235/3206C04B2235/3215C04B2235/3217C04B2235/3281C04B2235/3409C04B2235/3418
Inventor 齐世顺程华容宋蓓蓓杨魁勇吕鹏孙淑英
Owner BEIJING YUANLIU HONGYUAN ELECTRONICS TECH
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