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Low-loss low-temperature co-fired ceramic green tape and preparation method thereof

A low-temperature co-fired ceramic, low-loss technology, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problem of yellowing on the edge of Ag conductors, poor control of sintering temperature, and mismatch between LTCC materials and sintered conductors Good and other problems, to achieve the effect of easy sintering matching, control of silver diffusion, and wide sintering window

Active Publication Date: 2021-06-29
安徽华封电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the CaO-B2O3-SiO2 crystallized glass crystallizes at 800°C-850°C during the sintering process, the glass in the LTCC substrate The sintering range of the LTCC substrate is narrowed, the matching between the LTCC material and the sintered conductor is not good, and the flatness of the LTCC substrate is difficult to control
[0005]Usually the glass with high boron content, the sintering temperature is not well controlled, and the edge of the Ag conductor will appear yellowing

Method used

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  • Low-loss low-temperature co-fired ceramic green tape and preparation method thereof
  • Low-loss low-temperature co-fired ceramic green tape and preparation method thereof
  • Low-loss low-temperature co-fired ceramic green tape and preparation method thereof

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Effect test

Embodiment 1

[0035] A low-loss low-temperature co-fired ceramic green belt of the present invention is composed of glass-ceramic powder, subvalent oxide, solvent, organic resin, dispersant and plasticizer.

[0036] Further, the glass-ceramic powder is composed of glass-ceramic powder A and glass-ceramic powder B;

[0037] Further the massfraction of each component of glass-ceramic powder A is:

[0038] 42wt% CaO, 30wt% B2O3, 25wt% SiO2, 1.5wt% P205, 1.0wt% K20, 0.5wt% Na20

[0039] The mass fraction of each component of glass-ceramic powder B is:

[0040] 36wt% CaO, 12wt% B2O3, 50wt% SiO2, 1.5wt% Al2O3, 0.5wt% MgO

[0041] Glass-ceramic powder A and B preparation method are as follows:

[0042] Glass-ceramic powder A, weigh the components in proportion and mix them evenly, place them in a platinum crucible, put the platinum crucible in a high-temperature glass melting furnace, keep it warm at 1400°C for 1 hour, then pour the molten glass into Quenching in deionized water to form glass ...

Embodiment 2

[0049] The present embodiment glass-ceramic powder A and B are identical with embodiment 1, but the glass-ceramic powder body is mixed by 35wt% A and 65wt% 55B, other composition is by the same ratio of embodiment 1.

Embodiment 3

[0051] The low-loss low-temperature co-fired ceramic green tape of this embodiment is composed of glass-ceramic powder, subvalent oxide, solvent, organic resin, dispersant, and plasticizer.

[0052] Further, the glass-ceramic powder is composed of glass-ceramic powder A and glass-ceramic powder B;

[0053] Further the massfraction of each component of glass-ceramic powder A is:

[0054] 40wt% CaO, 36wt% B2O3, 22wt% SiO2, 1.0wt% P2O5, 0.5wt% K2O, 0.5wt% Na2O

[0055] The mass fraction of each component of glass-ceramic powder B is:

[0056] 40wt% CaO, 15wt% B2O3, 43wt% SiO2, 1.5wt% Al2O3, 0.5wt% MgO

[0057] Glass-ceramic powder A and B preparation method are as follows:

[0058] Glass-ceramic powder A, weigh the components in proportion and mix them evenly, place them in a platinum crucible, put the platinum crucible in a high-temperature glass melting furnace, keep it warm at 1400°C for 1 hour, then pour the molten glass into Quenching in deionized water to form glass sla...

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Abstract

The invention relates to the technical field of low-temperature co-fired ceramics of electronic ceramic materials, in particular to a low-loss low-temperature co-fired ceramic green tape and a preparation method thereof. The invention provides a low-loss low-temperature co-fired ceramic green tape and a preparation method thereof. The low-loss low-temperature co-fired ceramic green tape is formed by oxidizing and mixing two kinds of borate crystallized glass (glass A and glass B) with different softening temperatures and one or two kinds of subvalent metal, wherein the crystallized glass A is borate crystallized glass with low softening temperature, and the composition of the crystallized glass A is CaO-B2O3-SiO2-M'xOy; M'xOy is one or more metal oxidation mixtures of P, Zr, Zn, Nb, Na and K; the crystallized glass B is borate crystallized glass with high softening temperature, and the composition of the B is CaO-B2O3-SiO2-M''xOy; and M''xOy is one or more metal oxidation mixtures of Al, Mg and Zr. The green tape is composed of 50-70 parts of crystallized glass powder, 0.1-2 parts of subvalent metal oxide and 30-50 parts of an organic adhesive. The dielectric constant of the green tape is 5.5-6.5, and the dielectric loss of the green tape is lower than 0.002 (40GHz).

Description

technical field [0001] The invention relates to the technical field of low-temperature co-fired ceramics for electronic ceramic materials, in particular to a low-loss low-temperature co-fired ceramic green belt and a preparation method thereof. Background technique [0002] With the rapid growth of microwave / millimeter wave application requirements, especially the higher and higher application frequency, materials and conductors are required to have low loss in the application frequency range. Low temperature co-fired ceramics have low conductor loss (gold, silver) It is one of the best choices for high-density packaging and microwave / millimeter wave packaging. [0003] Usually borosilicate glass plus ceramic filler phase (such as Al 2 o 3 ), LTCC materials have high strength, but because the glass contains a large amount of heavy metal elements such as Pb and Ba, the dielectric loss is relatively large under high-frequency use. [0004] CaO-B 2 o 3 -SiO 2 The crystall...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03B19/06
CPCC03C10/00C03B19/06
Inventor 李超柳小燕
Owner 安徽华封电子科技有限公司
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