Analysis of the variation of conductivity of printing platinum paste with printing thickness

As an important electronic material, printed platinum paste is widely used in fields such as microelectronic packaging, sensor manufacturing, and heating elements. Its conductivity is one of the key indicators for evaluating its quality and application effectiveness. This article will explore how the conductivity of printed platinum paste varies with printing thickness, and specifically introduce the advanced technology of Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum Brand YB8207 Printing Platinum SlurryPerformance in this regard.

1、 Factors affecting the conductivity of printing platinum paste

The conductivity of printed platinum paste is mainly affected by various factors such as the contact of metal particles, viscosity and flowability of the paste, drying and sintering conditions. Among them, the contact condition of metal particles is a key factor affecting the conductivity performance. When the printing thickness is thin, the contact area between metal particles is limited, making it difficult to form a continuous conductive path, resulting in poor conductivity. As the printing thickness increases, metal particles have more opportunities to come into contact with each other and form a continuous conductive network, thereby improving conductivity.

2、 The variation of conductivity of printing platinum paste with printing thickness

Initial stage: Rapid enhancement of conductivity performance

In the initial stage of printing platinum paste, as the printing thickness increases, the conductivity will sharply enhance. This is because thicker printing layers can accommodate more platinum particles, thereby increasing the contact area and conductive pathways between particles. Experimental data shows that when the printing thickness increases from 1um to 5um, the resistance value of the conductive line decreases from 100 ohms to 20 ohms, indicating a significant improvement in conductivity.

Mid stage: The conductivity gradually stabilizes

As the printing thickness further increases, the trend of conductivity growth will gradually stabilize. This is because although the number of platinum particles is increasing, the contact between particles may not continue to improve significantly. In addition, excessively thick printing layers may also cause uneven drying and particle agglomeration, thereby affecting the conductivity performance. Experiments have shown that when the printing thickness increases to the range of 20um to 25um, the fluctuation range of the resistance value of the conductive line is within ± 2 ohms, and it almost no longer changes with the increase of thickness.

3、 Performance of YB8207 printing platinum paste from Yanbo brand

Advanced Institute (Shenzhen) Technology Co., Ltd.'s YB8207 printing platinum paste has shown outstanding performance in this aspect. Its moderate viscosity (1000-1500 cP) and good flowability enable the slurry to be evenly distributed and quickly fill the gaps in the screen during the printing process, forming clear patterns. This excellent printability provides a strong guarantee for obtaining uniform and stable printing layer thickness.

In addition, the drying and sintering conditions of YB8207 printing platinum paste from Yanbo brand are mild and easy to control. Drying at 150 ° C for 10 minutes, then sintering at 600 ° C for 15 minutes, the slurry can quickly dry and form a good conductive film. This stable drying and sintering characteristic helps ensure good contact between platinum particles and continuity of conductive pathways. Experimental data shows that under these conditions, the resistance values of conductive lines exhibit good consistency at different printing thicknesses.

4、 Conclusion

The conductivity of printed platinum paste undergoes a process from rapid enhancement to stabilization as the printing thickness increases. In practical applications, it is necessary to choose the printing thickness reasonably according to specific needs to obtain better conductivity performance. The YB8207 printing platinum paste of Advanced Institute (Shenzhen) Technology Co., Ltd. has shown broad application prospects in the fields of microelectronics, sensors, and fuel cells due to its excellent viscosity, fluidity, drying and sintering characteristics, and stable conductivity.

With the continuous development of technology, the research on the conductivity of printed platinum paste will continue to deepen, and its application in the electronics industry will become increasingly widespread. In the future, we look forward to the emergence of more high-performance printing platinum pastes, making greater contributions to the performance and reliability improvement of electronic products.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.