How does the conductivity of PET gold plating film vary with the thickness of the gold plating layer?

PET gold-plated filmAs a composite material coated with a thin gold layer on the surface of polyethylene terephthalate (PET) film, it has been widely used in various fields such as electronic devices, flexible circuit boards, and flexible displays due to its excellent conductivity, corrosion resistance, and decorative effect. This article will take the PET gold plating film product of Advanced Institute (Shenzhen) Technology Co., Ltd. as an example to explore how the thickness of the gold plating layer affects the conductivity of the PET gold plating film, and compare and analyze it with reference data and experimental data.

The influence mechanism of gold plating thickness on conductivity

The thickness of the gold plating layer is one of the important indicators for measuring the quality of the electroplated layer, which directly affects the conductivity, corrosion resistance, and even the reliability of the product. regardingPET gold-plated filmIn terms of thickness, the gold plating layer not only determines its conductivity, but also affects its mechanical properties and chemical stability.

theoretical analysis

• Thinner gold plating layer: Although it can preserve the flexibility of PET substrate, an excessively thin gold plating layer may increase contact resistance, affecting signal transmission efficiency and accuracy of analog output. In addition, the corrosion resistance will also decrease, making the PET gold plating film susceptible to damage in environments containing corrosive substances.
• Moderate gold plating layer: It can provide good conductivity and corrosion resistance, ensuring stable operation of PET gold plating film in various application environments.
• Thicker gold plating layer: Although it can improve conductivity and corrosion resistance, an excessively thick coating may alter the shape and size of the PET film, affecting assembly accuracy with other components and increasing costs.

Experimental design and data comparison

Experimental Materials and Methods

• Experimental materials: UsingAdvanced Institute (Shenzhen) Technology Co., LtdThe PET gold-plated film samples produced have gold-plated layer thicknesses set to 5 μ m, 25 μ m, 50 μ m, and 100 μ m, respectively.
• Testing method: Use a four probe tester to measure the sheet resistance of PET gold plating films with different thicknesses of gold plating layers to evaluate their conductivity performance. At the same time, conduct corrosion resistance tests to observe the corrosion of the gold plating layer in salt solutions of different concentrations.

experimental data

Comparative analysis of data

• Conductivity: As the thickness of the gold plating layer increases,PET gold-plated filmThe block resistance gradually decreases and the conductivity significantly improves. From 5 μ m to 100 μ m, the sheet resistance decreased from 100 Ω/□ to 25 Ω/□, indicating that a thicker gold plating layer is more conducive to current transmission.
• Corrosion resistance: The thickness of the gold plating layer also has a significant impact on corrosion resistance. The thinner gold plating layer (5 μ m) showed slight corrosion after immersion in salt solution, while the gold plating layer above 25 μ m exhibited excellent corrosion resistance without obvious corrosion phenomenon.

conclusion

The experimental results show that the conductivity of PET gold plating film increases with the increase of gold plating thickness, and the corrosion resistance is also enhanced. However, although an excessively thick gold plating layer can bring better conductivity and corrosion resistance, it may alter the shape and size of the PET film, increasing costs. Therefore, in practical applications, the appropriate thickness of the gold plating layer should be selected according to specific needs to balance various factors such as conductivity, corrosion resistance, cost, and assembly accuracy.

Produced by Advanced Institute (Shenzhen) Technology Co., LtdPET gold-plated filmWith its precise coating thickness control technology and excellent product performance, it occupies an important position in the market. In the future, with the continuous advancement of technology and the expansion of application fields, PET gold plating film is expected to play an important role in more high-end electronic products.

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