Low-dielectric LTCC green tape as well as preparation method and use thereof

A green ceramic tape and low dielectric technology, which is applied in the field of low dielectric LTCC green ceramic tape and its preparation, can solve the problem of non-crystallization of glass, and achieve the effects of reducing glass content, reducing dielectric loss and improving mechanical strength

Active Publication Date: 2020-02-14
NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the existing ceramic + glass system low-temperature co-fired ceramic materials and glass do not devitrify
And in the present invention, by applying the compound addition of devitrable glass material and sintering aid, on the one hand solve Zn 2-x SiO 4-x Low-temperature sintering of ceramics, while improving the mechanical properties and high-frequency electrical properties of the system

Method used

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  • Low-dielectric LTCC green tape as well as preparation method and use thereof
  • Low-dielectric LTCC green tape as well as preparation method and use thereof
  • Low-dielectric LTCC green tape as well as preparation method and use thereof

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preparation example Construction

[0045] The invention also discloses a method for preparing a low dielectric LTCC green ceramic belt, which includes the following steps:

[0046] Preparation of ceramic materials: according to the chemical composition of ceramic materials Zn 2-x SiO 4-x Weigh ZnO and SiO 2 As the initial powder, Zn 2-x SiO 4-x Ceramic material;

[0047] Preparation of glass material: weigh CaCO according to the ratio 3 , SiO 2 、H 3 BO 3 、Al 2 o 3 ,P 2 o 5 、Na 2 CO 3 , Li 2 CO 3 After mixing, melt and quench to obtain broken glass, then ball mill and dry to obtain glass material;

[0048] Preparation of green porcelain tape slurry: mix the Zn 2-x SiO 4-x The ceramic material and the glass material, sintering aids, solvents, plasticizers, dispersants, and binders are mixed by ball milling and defoamed to make cast slurry;

[0049] Casting of raw porcelain tape: cast the casting slurry to make a low dielectric LTCC green tape.

[0050] Preferably, in the preparation process of...

Embodiment 1

[0056] a. Preparation of ceramic materials: Weigh 71.4wt% ZnO and 28.6wt% SiO according to the mass ratio 2 As the initial powder, the initial powder was milled with alcohol as the ball milling medium, dried with agate balls for 6 hours, and calcined at 1150°C for 4 hours. The calcined powder was refined by ball milling to obtain Zn 1.91 SiO 3.91 Ceramic material.

[0057] b. Preparation of glass material: weigh 43.6wt% CaCO 3 , 15.2wt%H 3 BO 3 , 34.3% SiO 2 , 2.2wt% Al 2 o 3 , 2.7wt%P 2 o 5 , 0.8 wt% Na 2 CO 3 , 1.2wt% Li 2 CO 3 Mix well, put it in a platinum crucible for melting at 1400°C, pour the molten glass directly into deionized water and quench it to obtain fluffy cullet with a milky white appearance, ball mill the cullet to a particle size of D50:1 ~1.5μm, dried to make glass-ceramics.

[0058] c, the preparation of raw porcelain tape: weigh 42wt% glass-ceramics, 58wt% Zn 1.91 SiO 3.91 Ceramic material, 1.5wt% CuO, 1.5wt% V 2 o 5 In the roller mill...

Embodiment 2

[0063] a. Preparation of ceramic materials: weigh 69.7wt% ZnO, 30.3wt% SiO 2 As the initial powder, the initial powder was milled with alcohol as the ball milling medium, dried with agate balls for 6 hours, and calcined at 1150°C for 4 hours. The calcined powder was refined by ball milling to obtain Zn 1.79 SiO 3.79 Ceramic material.

[0064] b. Preparation of glass material: weigh 43.1wt% CaCO 3 , 18.2wt%H 3 BO 3 , 31.8% SiO 2 , 2.2wt%Al 2 o 3 , 2.7wt%P 2 o 5 , 0.8 wt% Na 2 CO 3 , 1.2wt% Li 2 CO 3 Mix evenly, melt in a platinum crucible at 1400°C, pour the molten glass directly into deionized water and quench to obtain milky white fluffy cullet, and ball mill the cullet until the particle size is D50: 1~ 1.5μm, dried to obtain glass-ceramics.

[0065] c, the preparation of raw porcelain tape: weigh 45wt% glass-ceramics, 52wt% Zn 1.79 SiO 3.79 Ceramic material, 1.2wt% CuO, 1.8wt% V 2 o 5In the roller mill for 12 hours, the powder is mixed evenly to obtain a ...

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Abstract

The invention discloses a low-dielectric LTCC green tape as well as a preparation method and use thereof. The low-dielectric LTCC green tape is composed of a powder, a solvent, a dispersing agent, a binder and a plasticizer, wherein the powder is in a mass fraction of 40-60%, and prepared from 10-40wt% of a glass material, 1-10wt% of a low melting point oxide sintering aid and the balance of a ceramic material; the chemical composition of the ceramic material is Zn2-xSiO4-x, where x=0.05-0.3. In the present invention, the problem of low-temperature sintering ofZn2-xSiO4-x ceramic is solved byadding the crystallizable glass material and the sintering aid together, and the mechanical properties and the high-frequency electrical characteristics of the system can be improved.

Description

technical field [0001] The invention belongs to the field of low-temperature co-fired ceramic materials, and in particular relates to a low-intermediate LTCC raw ceramic belt, a preparation method and application thereof. Background technique [0002] With the continuous advancement of 5G communication and microwave technology, microwave circuit components with small, lightweight and multi-functional features have attracted more and more attention from the consumer electronics market. These circuits have the characteristics of high frequency of use, low delay, and low loss and heat generation. , put forward new and higher requirements for raw materials. LTCC technology is an important way to realize the development of microwave components in the direction of high-density integration, high reliability, and high frequency. , through-hole filling, printing, lamination and other processes, the electrode materials and dielectric materials are fired at one time, which greatly red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/16C04B35/64C03C6/04
CPCC04B35/16C04B35/64C03C1/00C04B2235/36C04B2235/3281C04B2235/3239C04B2235/3454C04B2235/96
Inventor 吕洋董兆文周万丰沐方清
Owner NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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