Performance of PI nickel plating film in electromagnetic shielding and its ability to protect against low-frequency electromagnetic interference

With the increasing miniaturization and integration of electronic devices, electromagnetic compatibility (EMC) has become an issue that cannot be ignored in electronic design. Especially in the fields of wireless communication, medical equipment, automotive electronics, etc., effective electromagnetic shielding materials have become the key to ensuring the normal operation of equipment.Polyimide (PI) nickel plating filmDue to its lightweight, flexible, and excellent conductivity, it has shown great potential in the field of electromagnetic shielding. This article will explore the performance of PI nickel plating film in electromagnetic shielding and analyze whether it can effectively block low-frequency electromagnetic interference.

Characteristics of PI nickel plating film

Polyimide (PI) is a high-performance engineering plastic with excellent heat resistance, chemical stability, and mechanical strength. By coating a layer of nickel (Ni) on its surface, not only can the conductivity of the PI film be enhanced, but it can also be endowed with certain electromagnetic shielding effectiveness. The nickel plated PI film not only maintains the advantages of the original PI material, but also achieves good performance due to the presence of the nickel layerElectromagnetic shielding effect.

Experimental data and performance analysis

Advanced Institute (Shenzhen) Technology Co., LtdMultiple electromagnetic shielding effectiveness tests were conducted on its PI nickel plated film products. The experimental results show that in the low frequency range (1 MHz to 1 GHz), the PI nickel plating film exhibits good shielding effectiveness. The specific data is as follows:

• Shielding effectiveness: At 1 MHz, the shielding effectiveness of PI nickel plating film reaches about 40 dB; At 100 MHz, the shielding effectiveness exceeds 60 dB; At a frequency of 1 GHz, the shielding effectiveness remains above 50 dB.
• Attenuation characteristics: As the frequency increases, the shielding effectiveness shows a trend of first increasing and then slightly decreasing, which is due to the skin effect. However, throughout the entire low-frequency range, the PI nickel plating film exhibits high shielding performance.
• Environmental adaptability: The PI nickel plating film can maintain stable shielding effectiveness in high temperature (150 ° C), low temperature (-40 ° C), and high humidity environments, demonstrating good environmental adaptability.

Low frequency electromagnetic interference protection capability

Low frequency electromagnetic interference (EMI) mainly occurs in the frequency range below several megahertz and is commonly found in environments such as power systems and industrial control equipment. For such interference sources,PI nickel plating filmDue to the presence of its highly conductive nickel layer, it can effectively reflect and absorb electromagnetic waves, thereby achieving effective protection against low-frequency EMI.

Application examples

In a practical application, a medical equipment manufacturer caused unstable signal transmission due to electromagnetic interference generated inside the equipment. By using the PI nickel plating film provided by Advanced Institute (Shenzhen) Technology Co., Ltd. as a shielding material, the level of electromagnetic interference inside the equipment was significantly reduced, the quality of signal transmission was improved, and the equipment worked more stably and reliably.

conclusion

Based on the above experimental data and analysis, it can be concluded that,PI nickel plating filmIt has shown excellent performance in electromagnetic shielding, especially in the low frequency range where it can effectively block electromagnetic interference. Its excellent shielding effectiveness, environmental adaptability, and lightweight and flexible characteristics make it an ideal choice for solving electromagnetic compatibility problems in electronic devices. With the continuous advancement of technology, PI nickel plating film is expected to play an important role in more application scenarios in the future.

The above data is for reference only, and specific performance may vary due to production processes and product specifications.