How to determine the optimal proportion of organic carriers in high temperature copper paste for MLCC?

In the rapid development of modern electronic technology, multilayer ceramic capacitors (MLCC) are an important component of electronic components, and their performance and quality directly affect the stability and reliability of the entire electronic system. The optimization of the composition and proportion of high-temperature copper paste, as a key material in the manufacturing process of MLCC, is crucial for improving the performance of MLCC. This article will be developed by Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum YB5112 MLCC High Temperature Copper PasteFor example, explore how to determine the optimal ratio of organic carriers.

1、 Composition of High Temperature Copper Paste for MLCC

High fever and copper paste formationMainly composed of copper powder, glass powder, organic carrier, and additives. Among them, copper powder and glass powder are responsible for providing conductivity and structural strength after sintering, while organic carriers play a role in dispersing, wetting, and carrying other components. Additives are used to adjust the physical and chemical properties of the slurry to meet specific process requirements.

2、 The role and influence of organic carriers

Organic carriers are mainly composed of resins and organic solvents, which play the following key roles in the slurry:

1. Dispersion effect: It evenly disperses copper powder and glass powder in the slurry to prevent agglomeration.
2. Wetting effect: Improve the wetting properties of the slurry on the substrate and enhance the coating effect.
3. Carrying function: Carrying solid particles such as copper powder and glass powder to form a stable slurry system.

3、 Method for determining the optimal proportion of organic carriers

Determining the optimal proportion of organic carriers requires comprehensive consideration of the physical and chemical properties of the slurry, sintering performance, and production cost. The following is a method based on experimental data:

1. Experimental design:
   • Set different proportions of organic carriers, such as 20%, 22.5%, 25%, 27.5%, and 30%.
   • Maintain the proportion of other components (copper powder, glass powder, additives) unchanged.
2. Performance testing:
   • Viscosity test: Measure the viscosity of the slurry under different organic carrier ratios to ensure good fluidity of the slurry.
   • Dispersion test: Observe the dispersion of copper powder and glass powder in the slurry to ensure no agglomeration phenomenon.
   • Sintering performance test: Test the density and conductivity of the sintered body at different sintering temperatures.
3. Data analysis:
   • Comparison of viscosity: It was found that when the proportion of organic carrier is 25%, the viscosity of the slurry is moderate, which is conducive to coating and not easy to flow.
   • Dispersion comparison: When the proportion of organic carrier is 25%, the dispersion effect of copper powder and glass powder is the best, with no agglomeration phenomenon.
   • Comparison of sintering performance: Sintering tests show that when the proportion of organic carrier is 25%, the compactness and conductivity of the sintered body are the highest, and the sintering temperature is relatively low, saving energy.

4、 Practical case of high temperature copper paste used in YB5112 MLCC of Yanbo brand

Advanced Institute (Shenzhen) Technology Co., LtdDeveloped YB5112 MLCC brand for research and developmentHigh fever and copper paste formationAfter multiple experiments and optimizations, the optimal proportion of organic carrier was finally determined to be 25%. The slurry at this ratio has the following advantages:

• Good fluidity: moderate viscosity, easy to coat and print.
• Excellent dispersibility: Copper powder and glass powder are uniformly dispersed in the slurry, improving the uniformity and density of the sintered body.
• Efficient sintering performance: Good sintering results can be achieved at lower sintering temperatures, reducing energy consumption.
• Stable quality: Through strict quality control, the performance of each batch of slurry is ensured to be stable and reliable.

5、 Conclusion

Through experimental design and data analysis, we have determinedMLCC uses high fever copper pasteThe optimal proportion of organic carriers is 25%. The slurry at this ratio has good fluidity, excellent dispersibility, and efficient sintering performance, providing reliable material guarantee for the manufacturing of MLCC. At the same time, the high sintering copper paste developed by Advanced Institute (Shenzhen) Technology Co., Ltd. for YB5112 MLCC under the research platinum brand has also provided us with practical cases and reference basis. In the future, with the continuous development of electronic technology, we will continue to explore and optimize the formula and preparation process of high sintering copper paste, providing better material support for the manufacturing of electronic components.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.