Low-dielectric-constant ceramic dielectric material for low-temperature sintered MLCC and preparation method thereof

A technology of low dielectric constant and ceramic medium, which is applied in the field of low-permittivity ceramic dielectric material and its preparation for low-temperature sintered MLCC. Poor performance and other problems, to achieve the effect of low cost of raw materials and processes, stable dielectric properties, and low dielectric loss

Inactive Publication Date: 2021-03-19
无锡鑫圣慧龙纳米陶瓷技术有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] At present, low-temperature sintered radio-frequency low-dielectric constant MLCC materials in the MLCC ceramic industry have an important application shortcoming, that is, the stability of product batches is poor. The reason is that the low-temperature sintered state of the dielectric material used is not stable enough. In particular, the sintering temperature range of materials within the temperature range of 9

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  • Low-dielectric-constant ceramic dielectric material for low-temperature sintered MLCC and preparation method thereof
  • Low-dielectric-constant ceramic dielectric material for low-temperature sintered MLCC and preparation method thereof

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[0028] The present invention also provides the preparation method of low dielectric constant ceramic dielectric material with low dielectric constant ceramic medium material, including the following steps:

[0029] (1) Composition of AMGO-BCAO-CTIO according to chemistry 2 -dbao-eb 2 O 3 -fsio 2 -gli 2O The raw material is mixed, and the feedstock is mixed as the dispersion medium; wherein, A, B, C, D, E, F, and G independently represents the moles percentage, and satisfies the following conditions: 45% Mol≤a ≤ 55% mol, 2% mol ≤ b ≤ 5% mol, 20% mol ≤ C ≤ 30% mol, 5% mol ≤ D ≤ 15% mol, 5% MOL ≤ E≤15% mol, 5% Mol ≤ F ≤ 15% mol, 5% mol ≤ g ≤ 15% mol, A + B + C + D + E + F + G = 100 mol%;

[0030] The starting material of the ceramic medium material is not limited to the oxide of each element, and the carbonate, nitrate, organometallic salt, etc. of each constituent element can be used instead, and the purity of each starting material is greater than 99%, but also Do not make special ...

Example Embodiment

[0041] Example 1-6:

[0042] The preparation method of low dielectric constant ceramic medium material with low dielectric constant ceramic dielectric materials, including the following steps:

[0043] (1) Composition of AMGO-BCAO-CTIO according to chemistry 2 -dbao-eb 2 O 3 -fsio 2 -gli 2 O on MGO, Cao, Tio 2 , Bao, B 2 O 3 SiO 2 LI 2 O The ingredients are performed, and the feedstock is mixed as a dispersion medium; wherein, A, B, C, D, E, F, and G independently represents the moles percentage, and the specific value is shown in Table 1;

[0044] (2) Disperse and pulverize the mixed powder using a ball milling process, and is made into a slurry;

[0045] (3) After drying the slurry, calcine at 750 ° C for 5 h, synthesizing matrix powder;

[0046] (4) Dispersion, crushing and drying the above-mentioned matrix powder by the ball mill;

[0047] (5) When the polyvinyl alcohol solution is added to the matrix powder after proceeding by step (4), the granulation is carried out, pressed...

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Abstract

The invention discloses a low-dielectric-constant ceramic dielectric material for a low-temperature sintered MLCC. The phase of the ceramic dielectric material comprises Mg2TiO3, CaTiO3, Ba3B6SiO14 and LiBSiO4, the chemical composition of the ceramic dielectric material is aMgO-bCaO-cTiO2-dBaO-eB2O3-fSiO2-gLi2O, and a, b, c, d, e, f and g independently represent mole percentages. The ceramic dielectric material has a low dielectric constant and low dielectric loss, the frequency temperature coefficient of the ceramic dielectric material meets the NP0/C0G standard, the sintering temperature ofthe ceramic dielectric material has wide adaptability, the ceramic dielectric material has stable dielectric properties the production cost is low, and the ceramic dielectric material can be widely used for manufacturing radio frequency MLCC devices.

Description

technical field [0001] The invention belongs to the technical field of electronic information materials, and in particular relates to a low-permittivity ceramic dielectric material for MLCC sintered at low temperature and a preparation method thereof. Background technique [0002] In order to meet the high-frequency and high-power requirements of electronic components such as communication equipment, military industry, and medical equipment, RF high-Q chip multilayer ceramic capacitors (MLCC) with high current carrying capacity have been developed rapidly. RF high Q value MLCC has the characteristics of high current carrying capacity, low equivalent series resistance, low equivalent series inductance, high Q value, high series resonance frequency, etc. It is widely used in communications, WLAN, satellite broadcasting equipment, medical electronics, missile systems In the radio frequency circuits of , aircraft radar and navigation systems, etc., it plays the role of coupling,...

Claims

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Application Information

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IPC IPC(8): C04B35/04C04B35/622
CPCC04B35/04C04B35/622C04B2235/3208C04B2235/3232C04B2235/3215C04B2235/3409C04B2235/3418C04B2235/3203C04B2235/602C04B2235/6567
Inventor 吉岸王晓慧金镇龙
Owner 无锡鑫圣慧龙纳米陶瓷技术有限公司
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