How to ensure good filling performance of internal electrode copper paste in multilayer ceramic capacitors?

Multilayer ceramic capacitors (MLCC) are an important component of electronic devices, and their performance directly affects the stability and reliability of the entire circuit. As one of the key materials of MLCC, the filling properties of copper paste for internal electrodes have a significant impact on the electrical performance and service life of capacitors. This article will delve into how to ensure good filling performance of internal electrode copper paste in MLCC, and combine it with the research of Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum YB5110 Internal Electrode Copper PasteConduct a specific analysis.

1、 The influence of filling properties of copper paste for internal electrodes on MLCC

The filling property of copper paste for internal electrodes refers to its uniform distribution and density in the dielectric layer inside MLCC. Good filling properties can ensure tight contact between the inner electrode and the dielectric layer, reduce interface resistance, and improve the conductivity and stability of the capacitor. At the same time, the filling property also directly affects the electrical parameters of capacitors, such as capacity, loss factor, and frequency characteristics.

2、 The influence of formula and preparation process of copper paste for internal electrode on filling properties

1. Formula design

Internal electrode copper pasteThe formula design is the key to ensuring its good filling properties. The shape and particle size distribution of copper powder, the composition and proportion of glass powder, and the performance of organic binders in the formula all directly affect the filling properties.

• Copper powder: The shape and particle size distribution of copper powder have a significant impact on its filling properties. Due to its larger specific surface area and better flowability, flake copper powder can better fill the gaps in the dielectric layer. Meanwhile, a reasonable particle size distribution can ensure the uniform distribution of copper powder in the dielectric layer, avoiding the occurrence of local over density or over density.
• Glass powder: The composition and proportion of glass powder also have a significant impact on its filling properties. Appropriate composition and proportion of glass powder can promote wetting and bonding between copper powder and dielectric layer, and improve filling properties.
• Organic adhesive: The performance of organic adhesive directly affects the flowability and printability of copper paste for internal electrodes. High performance organic adhesives can improve the printing accuracy and filling properties of copper paste, ensuring uniform distribution of internal electrodes in the dielectric layer.

2. Preparation process

The preparation process of copper paste for internal electrodes is also an important factor in ensuring its good filling properties. The preparation process includes mixing, ball milling, filtering, printing, and other steps, each of which requires strict control to ensure the quality and filling properties of the copper paste.

• Mixing: The mixing process requires ensuring the uniform dispersion of various raw materials to avoid local agglomeration or layering.
• Ball milling: The ball milling process requires controlling the ball milling time and the selection of milling media to ensure that the particle size distribution and shape of copper powder meet the requirements.
• Filtration: The filtration process requires the removal of impurities and particles from the copper slurry to ensure its purity and fluidity.
• Printing: The printing process requires controlling the printing pressure and speed to ensure uniform distribution and good filling of the internal electrodes in the dielectric layer.

3、 Advantages of filling properties of YB5110 internal electrode copper paste from Yanbo brand

Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum YB5110 Internal Electrode Copper PasteAdvanced formula design and preparation technology have been adopted to ensure its good filling performance in MLCC.

• Formula design: The YB5110 internal electrode copper paste of the Research Platinum brand uses high-purity and highly active copper powder and optimized glass powder composition and ratio, ensuring good wetting and bonding between the copper paste and the dielectric layer. At the same time, high-performance organic adhesives improve the fluidity and printability of copper paste, ensuring the uniform distribution of internal electrodes in the dielectric layer.
• Preparation process: The preparation process of YB5110 internal electrode copper paste adopts advanced mixing, ball milling, filtering, and printing technologies to ensure the quality and filling properties of the copper paste. By strictly controlling the process parameters of each step, the YB5110 internal electrode copper paste of Yanbo brand can achieve good filling performance in MLCC.

4、 Experimental data and result analysis

In order to verify the filling advantage of YB5110 internal electrode copper paste, we conducted relevant experimental tests.

• Experimental method: Print the copper paste of the YB5110 internal electrode of the research platinum brand on multiple ceramic dielectric layers, and observe the filling of the internal electrode after sintering. At the same time, measure electrical parameters such as capacitance, loss factor, and frequency characteristics of capacitors.
• Experimental results: The experimental results show that the YB5110 internal electrode copper paste of Yanbo brand achieves good filling performance in MLCC, with tight bonding between the internal electrode and the dielectric layer and low interface resistance. At the same time, the electrical parameters such as capacity, loss factor, and frequency characteristics of the capacitor have all met the design requirements.

conclusion

The filling property of copper paste for internal electrodes has a significant impact on the electrical performance and service life of MLCC. Through reasonable formula design and preparation process, the good filling performance of internal electrode copper paste in MLCC can be ensured.Advanced Institute (Shenzhen) Technology Co., LtdThe research platinum brand YB5110 internal electrode copper paste adopts advanced formulas and processes to ensure its excellent filling performance in MLCC, providing strong guarantees for the stability and reliability of electronic components.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.