Preparation and application of nano copper paste for screen printable ceramic capacitors

1、 Introduction

In the field of electronic component manufacturing, multilayer ceramic capacitors (MLCC) are widely used in communication equipment, computers, home appliances, and other fields due to their advantages of small size, light weight, and high capacitance density. As one of the important materials in MLCC, copper paste is not only used as an internal electrode material, but also directly affects the performance and reliability of capacitors. In recent years, with the development of nanotechnology, nano copper paste has gradually become an important material for preparing high-performance MLCC due to its unique properties.Advanced Institute of TechnologyThis article will focus on introducing screen printable ceramic capacitorsNano copper pastePreparation technology and its applications.

2、 Preparation of Nano Copper Paste

The preparation of nano copper paste for screen printable ceramic capacitors mainly includes the following steps:

1. Preparation of organic carrier: Mix organic solvent and resin in a certain proportion, and stir thoroughly at a specific temperature (such as 60 ℃) to prepare the organic carrier.

2. Preparation of nano copper paste: Organic carriercopper nanoparticleMix the glass phase and additives in a certain proportion and grind them multiple times (such as 10 times) on a three roll grinder to obtain nano copper paste for ceramic capacitors that can be used for screen printing.

3、 Application of Nano Copper Paste

1. Improve capacitance performance: Nano copper paste has good conductivity, plasticity, and high temperature stability, making it an ideal choice for manufacturing MLCC electrodes. Nano copper paste as an electrode material can provide higher capacitance density, allowing MLCC to store more electrical energy in a relatively small volume.

2. Improve work stability: Nano copper paste has good electrical performance and thermal expansion matching, and can maintain stable capacitance characteristics under different temperature and electric field conditions. By accurately controlling the composition and manufacturing process of nano copper paste, the capacitance leakage and withstand voltage loss between internal electrodes can be reduced, ensuring the reliability of MLCC in long-term use and extreme environments.

3. Improving frequency characteristics: The selection and optimization of nano copper paste can also improve the low-frequency and high-frequency characteristics of MLCC. By adjusting parameters such as the composition, particle size, and distribution of nano copper paste, the equivalent series resistance (ESR) and equivalent series inductance (ESL) of capacitors can be changed, thereby improving the performance of MLCC at different frequencies.

4、 Conclusion

With the continuous development of electronic products and the increasing trend towards multifunctionality, the requirements for MLCC are also constantly increasing.Nano copper pasteAs an important material for preparing high-performance MLCC, its research and innovation will continue to receive widespread attention. By optimizing the preparation process and parameters of nano copper paste, the performance and reliability of MLCC can be further improved, providing support for MLCC to unleash greater potential in various applications. Meanwhile, the preparation technology of nano copper paste also provides new ideas and directions for other fields, with broad application prospects.