Performance characteristics of PI copper plated film as a sensor material

Brief introduction

In today's constantly developing sensor technology, the selection of materials plays a crucial role in the performance of sensors.Polyimide (PI) copper plated filmAs an emerging sensor material, it is receiving increasing attention. The PI film itself has various excellent characteristics, and the copper plating layer further endows it with unique properties, making it widely applicable in the field of sensors.

2、 Performance characteristics of PI copper plated film

（1） Good mechanical performance

1. High strength and high modulus
   • PI material itself has high strength and modulus, and can withstand a certain degree of external force without deformation or damage. After copper plating on the PI film, the copper layer forms a composite structure with the PI film, further enhancing the overall mechanical strength. For example,Advanced Institute (Shenzhen) Technology Co., LtdIn the study of PI copper plated film, it was found that its tensile strength was significantly improved compared to untreated PI film, which can meet the structural stability requirements of sensors in different working environments.
2. flexibility
   • PI copper plated film has good flexibility, which allows it to adapt to sensor designs with various shapes and bending requirements. In some application scenarios that require fitting surfaces or building sensors on flexible substrates, the flexibility of PI copper plating film is particularly important. It can maintain relative stability in its electrical and physical properties even under bending, folding, and other operations, without significant degradation in sensor performance due to minor structural deformations.

（2） Excellent electrical performance

1. high conductivity
   • Copper is an excellent materialconducting materialAfter copper plating on the surface of the PI film, the conductivity of the PI copper plated film is greatly improved. This is a crucial performance for sensors, as they often require fast and accurate transmission of electrical signals. For example, in electrical sensors, PI copper plated film can be used as an electrode material, and its high conductivity can ensure efficient conduction and response of the sensor to weak electrical signals, reducing losses during signal transmission.
2. Electromagnetic shielding performance
   • PI copper plated filmThe copper layer can effectively shield external electromagnetic interference. In the working environment of sensors, there may be various electromagnetic signal sources, and these interference signals may affect the normal operation of sensors. Tests conducted by Advanced Institute (Shenzhen) Technology Co., Ltd. have shown that PI copper plated film can provide good electromagnetic shielding effectiveness within a certain frequency range, ensuring the normal operation of the internal circuit of the sensor, improving the anti-interference ability of the sensor, and thus ensuring the accuracy of the sensor output signal.

（3） Excellent chemical stability

1. corrosion resistance
   • PI copper plated film has good corrosion resistance. The PI film itself has a certain tolerance to many chemicals, while the copper layer can also resist corrosion to a certain extent after appropriate treatment, such as surface passivation. In some sensor application scenarios that may come into contact with corrosive media, such as sensors in chemical or biological liquid environments, PI copper plating film can maintain its stable performance and extend the service life of the sensor.
2. Adaptability to different chemical environments
   • PI copper plating film can exhibit relatively stable performance in acidic, alkaline, or other chemical environments. This makes it applicable to various types of sensors, including chemical sensors. For example, in sensors that detect the concentration of specific chemical substances, the PI copper plating film will not affect the performance of the sensor due to chemical reactions with the detected substance or the surrounding chemical environment.

（4） Thermal stability

1. High temperature tolerance
   • PI materials have excellent high-temperature stability and can maintain their physical and chemical properties at higher temperatures. After copper plating, the PI copper plated film still maintains good high temperature resistance. Sensors that work in high-temperature environments, such as engine internal temperature monitoring sensors or sensors used in high-temperature industrial production processes, can function normally with PI copper plated film without performance degradation due to high temperatures.
2. Matching of thermal expansion coefficient
   • The thermal expansion coefficients of PI copper plated film and copper layer are relatively matched. When the temperature changes, this matching can reduce the internal stress caused by thermal expansion differences, avoid problems such as film peeling or sensor structure damage caused by thermal stress, and ensure the reliability of the sensor in different temperature environments.

3、 Conclusion

in summary,PI copper plated filmAs a sensor material, it has various excellent performance characteristics, including good mechanical properties, excellent electrical properties, outstanding chemical stability, and thermal stability. The achievements of Advanced Institute (Shenzhen) Technology Co., Ltd. in the research and application of PI copper plating film further demonstrate its enormous potential in the field of sensors. With the continuous development of sensor technology, PI copper plated film is expected to be widely used in more types of sensors, providing strong support for the improvement of sensor performance and the expansion of functions.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.