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Inner electrode copper paste for low-temperature co-fired ceramic, and preparation method and application thereof

A technology of low-temperature co-fired ceramics and internal electrodes, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., which can solve the problems of poor combination of conductivity and achieve good co-firing Matching, reduced warping, and excellent printability

Active Publication Date: 2021-03-16
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, most conductor copper pastes are not well combined with LTCC substrate materials in terms of co-firing matching, screen printing and electrical conductivity

Method used

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  • Inner electrode copper paste for low-temperature co-fired ceramic, and preparation method and application thereof
  • Inner electrode copper paste for low-temperature co-fired ceramic, and preparation method and application thereof
  • Inner electrode copper paste for low-temperature co-fired ceramic, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Prepare a mixed solution of deionized water: ethanol with a mass ratio of 10:3, mix copper powder, citric acid, ascorbic acid, and polyvinylpyrrolidone at a mass ratio of 4:2:2:1, and mix the above mixed solution with the powder (copper powder, citric acid, ascorbic acid, polyvinylpyrrolidone) mixed in a volume ratio of 3:1, placed on a magnetic stirrer and stirred in a water bath at 50-80°C for 10 hours, and then placed in a cell pulverizer for 6 hours to obtain pretreated copper powder.

[0034] 2. Add 38wt% SiO 2 , 16 wt% HfO 2 , 8 wt% Al 2 o 3 , 38wt% CuO into a corundum crucible, stir it well with a glass rod, put it into a high-temperature sintering furnace, and preheat it at 400°C for 10 minutes; after the heat preservation, raise the temperature to 1400°C at 10°C / min 30 minutes; fill a 1.4L stainless steel container with deionized water and place it near the high-temperature sintering furnace; take out the molten glass powder with a sampling clamp, and th...

Embodiment 2

[0038] 1. Configure a mixed solution with a mass ratio of deionized water: ethanol = 5-10:1-4, mix copper powder with citric acid, ascorbic acid, and polyvinylpyrrolidone at a mass ratio of 4:2:2:1, and mix the solution with The powder is mixed according to the volume ratio of 3:1, placed on a magnetic stirrer and stirred in a water bath at 50-80°C for 5-10 hours, and then placed in an ultrasonic pulverizer for 3-10 hours to obtain pretreated copper powder.

[0039] 2. Add 38wt% SiO 2 , 16 wt% HfO 2 , 8 wt% Al 2 o 3, 38wt% CuO into a corundum crucible, and fully stir it with a glass rod; put the prepared glass oxide into a high-temperature sintering furnace, and preheat it at 400°C for 10 minutes; Raise the temperature to 1400°C and keep it warm for 30 minutes; fill a 1.4L stainless steel container with deionized water and place it near the high-temperature sintering furnace; take out the molten glass powder with a sampling clamp, and then quickly pour it into a Carry out ...

Embodiment 3

[0043] 1. Pretreatment of copper powder: configure a mixed solution with a mass ratio of deionized water: ethanol = 10:3, mix copper powder with citric acid, ascorbic acid, and polyvinylpyrrolidone in a mass ratio of 4:2:2:1, and The solution and the powder are mixed at a volume ratio of 3:1, placed on a magnetic stirrer and stirred in a water bath at 50-80°C for 3-10 hours, and then pulverized in an ultrasonic pulverizer for 3-10 hours to obtain pretreated copper powder.

[0044] 2. Add 38wt% SiO 2 , 16 wt% HfO 2 , 8 wt% Al 2 o 3 Put 38wt% CuO into a corundum crucible, stir it evenly with a glass rod, put it into a high-temperature sintering furnace, heat it at 400°C for 10 minutes to preheat; after heat preservation, raise the temperature to 1400°C at 10°C / min, and hold it for 30 minutes; Fill a 1.4L stainless steel container with deionized water and place it near the high-temperature sintering furnace; take out the molten glass powder with a sampling clip, then quickly p...

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Abstract

The invention belongs to the technical field of fine chemical preparation, and provides an inner electrode copper paste for low-temperature co-fired ceramics, a preparation method and application thereof. The inner electrode copper paste comprises 60-75 wt% of pretreated copper powder, 1-10wt% of glass powder, 1-3 wt% of ceramic particles and 10-30 wt% of an organic binder, wherein the organic binder comprises 40-70% of a solvent, 5-20% of a plasticizer, 5-20% of an adhesive, 1-10% of a dispersing agent and 5-20% of an additive, the pretreated copper powder is prepared by mixing copper powder,citric acid, ascorbic acid and polyvinylpyrrolidone, adding the mixture into an ethanol aqueous solution, stirring in a water bath at 50-80 DEG C and crushing, and the glass powder is obtained by uniformly mixing SiO2, HfO2, Al2O3 and CuO, melting at the temperature of 1300-1400 DEG C and quenching in water. According to the invention, the performance indexes of the electrode copper paste meet the requirements of LTCC, and the electrode copper paste can be applied to the field of passive element preparation.

Description

technical field [0001] The invention belongs to the technical field of fine chemical preparation, and more specifically relates to an internal electrode copper paste for low-temperature co-fired ceramics (LTCC) and a preparation method and application thereof. Background technique [0002] With the rapid development of modern microelectronic information technology, people's demand for electronic components in terms of portability, miniaturization, digitalization, multi-function, high performance and high reliability makes electronic components suitable for miniaturization, modularization and integration. The demands are becoming more and more urgent. Low temperature co-fired ceramic technology (Low temperature co-fired ceramic, LTCC) is a kind of multidisciplinary comprehensive component technology that has emerged in recent decades. It has become a research hotspot in recent years, and because of its good thermodynamics, Electronics and corresponding mechanical properties,...

Claims

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Application Information

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IPC IPC(8): H01B1/16H01B1/22H01B13/00
CPCH01B1/16H01B1/22H01B13/00Y02E60/10
Inventor 鲁圣国陈先义焦志伟姚英邦陶涛梁波
Owner GUANGDONG UNIV OF TECH
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