Evaluation of Electromagnetic Shielding Efficiency of Nickel Plating Film in Communication Equipment

With the rapid development of communication technology, electromagnetic shielding effectiveness has become a key factor in ensuring the stable operation of equipment and signal integrity. Nickel plated film has been widely used in communication equipment due to its excellent conductivity and electromagnetic shielding performance. This article will discussPI nickel plating film, PET nickel plating film, PP nickel plating filmEvaluate the electromagnetic shielding effectiveness in communication equipment and analyze it with reference to experimental data from Advanced Institute (Shenzhen) Technology Co., Ltd.

Nickel plated films deposit nickel layers on the surface of thin films through techniques such as electroplating, chemical plating, or magnetron sputtering. This not only preserves the physical properties of the base film, but also significantly enhances its electromagnetic shielding ability. Nickel plated films are widely used in key components such as antennas, circuit boards, and connecting wires in communication equipment to effectively cope with complex electromagnetic environments.

Experimental Design and Methods

Sampling

This evaluation selected PI nickel plating film, PET nickel plating film, and PP nickel plating film as experimental samples, all of which were fromAdvanced Institute (Shenzhen) Technology Co., LtdThis ensures the consistency and reliability of the experiment.

Testing equipment and methods

• Equipment: The Vector Network Analyzer (VNA) is used for electromagnetic shielding effectiveness (SE) testing. This equipment can accurately measure the reflectivity (R), absorptivity (A), and transmittance (T) at different frequencies, thereby calculating the SE value.
• Method: According to national standards such as GB/T 30142-2013 "Measurement Method for Shielding Efficiency of Planar Electromagnetic Shielding Materials", the test is conducted in a shielding room or anechoic chamber. Set multiple frequency points (such as 1 MHz to 18 GHz) and measure the SE values of each sample separately.

Experimental data and result analysis

PI nickel plating film

• Low frequency range (1 MHz to 1 GHz):
  • Shielding efficiency: At 1 MHz,PI nickel plating filmThe shielding effectiveness reaches about 40 dB; At 100 MHz, exceeding 60 dB; Maintain above 50 dB at 1 GHz.
  • Attenuation characteristics: As the frequency increases, the shielding effectiveness first increases and then slightly decreases, due to the skin effect.
  • 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.
• High frequency range (30 MHz to 3 GHz):
  • The average shielding effectiveness exceeds 80 dB, demonstrating excellent performance.

PET nickel plating film and PP nickel plating film

Due to the direct relationship between PET nickel plating film andPP nickel plating filmDetailed experimental data on the specific electromagnetic shielding effectiveness in communication equipment is not directly provided. The following analysis is based on the performance characteristics of general nickel plating films for speculation:

• PET nickel plated film: PET (polyethylene terephthalate) base film has good mechanical properties and chemical stability. After nickel plating, its electromagnetic shielding effectiveness is expected to remain stable over a wide frequency range, but may be slightly inferior to PI nickel plated film, especially in high-temperature environments.

• PP nickel plating film: PP (polypropylene) base film is relatively light and cost-effective, but its thermal stability and mechanical strength are relatively low. After nickel plating, the electromagnetic shielding effectiveness of PP nickel plating film may be close to that of PI and PET nickel plating films at room temperature, but its performance may decrease at high temperatures or extreme environments.

data comparison

• Material comparison:
  • The PI nickel plating film exhibits excellent electromagnetic shielding performance in both low and high frequency bands, and has strong environmental adaptability.
  • PET nickel plating film may have similar performance to PI nickel plating film at room temperature, but its performance is slightly inferior in extreme environments.
  • PP nickel plating film has a lower cost, but its overall performance may be slightly lower than the previous two.
• Compared to traditional materials:
  • Compared with traditional metal shielding materials such as copper plates, PI nickel plating film exhibits higher shielding effectiveness in the high frequency range (over 80 dB vs about 50 dB).

Conclusion and Prospect

The evaluation of electromagnetic shielding effectiveness of nickel plated film in communication equipment shows that,PI nickel plating filmDue to its excellent conductivity, high temperature resistance, and environmental adaptability, it has become an ideal choice for improving the signal integrity of communication equipment and reducing electromagnetic interference. With the continuous advancement of technology and the continuous expansion of applications, nickel plating technology is expected to play an important role in more fields and contribute more to the progress of human society.

In the future, by further optimizing the preparation process and material formula, the comprehensive performance of nickel plating film is expected to be further improved, meeting more diversified and higher requirements for electromagnetic environment. At the same time, with the rapid development of new energy, intelligent manufacturing and other fields, nickel plating film will also usher in a broader market space.

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