Exploration of the influence of nickel plating on the chemical stability of PET film

PET film, as a widely used polymer material, has excellent mechanical, optical, and insulation properties. However, in some specific chemical environments, its chemical stability needs to be further improved. Nickel plating, as an effective surface modification method, is applied to the surface of PET films to improve their chemical stability and meet more stringent application requirements. Advanced Institute (Shenzhen) Technology Co., Ltd PET nickel plated filmWe have conducted in-depth research on the development and production of PET films, providing rich practical experience and theoretical basis for exploring the influence of nickel plating on the chemical stability of PET films.

（1） Physical barrier effect
The nickel plating layer forms a continuous and dense metal layer on the surface of PET film, which can effectively block the direct contact between external chemicals and PET film, thereby reducing the erosion of PET molecular chains by chemicals. For example, in some acidic and alkaline solution environments, the nickel layer can prevent hydrogen ions or hydroxide ions from penetrating into the interior of PET film, reducing the hydrolysis or corrosion of PET film by acidity and alkalinity.

（2） Enhanced chemical stability
Nickel itself has good chemical stability and is not easily reactive with many common chemicals. When the nickel plating layer covers the surface of the PET film, its chemical stability is transferred to the PET film. The nickel layer can resist chemical reactions such as oxidation and reduction to a certain extent, making PET nickel plated filmShows stronger tolerance in environments containing oxidants or reducing agents.

（3） Electrochemical protection
In some electrolyte solution environments, the nickel plating layer and PET film form an electrochemical protection system. The electrode potential of nickel is relatively high. When there are small damages or defects on the surface of PET film, the nickel layer will act as a sacrificial anode to preferentially undergo oxidation reaction, thereby protecting the main body of PET film from further corrosion. This electrochemical protection mechanism effectively extends the service life of PET film in electrochemical environment.

Advanced Institute (Shenzhen) Technology Co., LtdBy optimizing the nickel plating process, high-quality PET nickel plated films were prepared, and their chemical stability was systematically tested and evaluated.

In the acid resistance test, ordinary PET film and PET nickel plated film were soaked in sulfuric acid solutions of different concentrations. As a result, it was found that ordinary PET films exhibited significant swelling, discoloration, and decreased mechanical properties in lower concentration sulfuric acid solutions, while PET nickel plated films could still maintain good integrity and performance stability in higher concentration sulfuric acid solutions. After prolonged soaking, although there were some corrosion marks on the surface of the nickel plating layer of PET nickel film, the internal PET film structure remained intact, which fully proves that the nickel plating layer has a significant improvement effect on the acid resistance of PET film.

In terms of alkali resistance testing, soaking experiments were conducted using sodium hydroxide solution. Similarly, PET nickel plated film exhibits better alkali resistance than ordinary PET film. The nickel plating layer effectively blocks the erosion of hydroxide ions, prevents the alkaline hydrolysis reaction of PET film, and enables PET nickel plating film to maintain normal performance for a long time in alkaline environment.

In addition, in some organic chemical reagent environments, such as alcohols, ketones, and other organic solvents, PET nickel plated filmIt also showed good tolerance. This is because the nickel plating layer reduces the swelling and dissolution of organic solvent molecules on PET film, maintaining the size stability and physical properties of the film.

In summary, the nickel plating layer has significant effects on the chemical stability of PET films, including physical barriers, enhanced chemical stability, and electrochemical protection mechanisms. Through the case analysis of Advanced Institute (Shenzhen) Technology Co., Ltd., it can be seen that PET nickel plating film has demonstrated advantages in acid resistance, alkali resistance, and organic solvent resistance in practical applications, and has broad application prospects in multiple fields such as electronics, chemical engineering, and food.

However, there are still some directions for further research on the chemical stability of PET films with nickel plating layers. For example, in complex chemical environments, further research is needed on the interface stability between nickel plating and PET film, as well as the performance evolution during long-term use. In the future, by optimizing nickel plating processes, developing new nickel plating materials and additives, and other means, the chemical stability of PET nickel plating films can be further improved, their application scope can be expanded, and the demand for high-performance materials in the constantly developing industrial and technological fields can be met. At the same time, strengthen research on its environmental friendliness and sustainability, ensuring that this material meets the requirements of modern society for green and environmentally friendly materials while being widely used.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.