Effective post-treatment of PEN film after nickel plating to enhance coating performance

In modern industry, PEN (Polyethylene Naphthalate) film has been widely used in flexible displays, medical devices, and special industrial applications due to its excellent physical and chemical properties. In order to further improve the performance of PEN films, nickel plating treatment has become an effective means. However, simply performing nickel plating treatment is not enough. The post-treatment steps are equally crucial as they directly affect the final performance of the coating. This article will introduce several effective post-processing methods, and use the information provided by Advanced Institute (Shenzhen) Technology Co., LtdPEN nickel plating filmFor example, explore how to enhance the performance of coatings through these methods.

1. Heat treatment

Heat treatment is one of the key steps to improve the performance of coatings. By baking or annealing treatment, stress and defects in the coating can be eliminated, and the adhesion between the coating and the substrate can be improved.Advanced Institute (Shenzhen) Technology Co., LtdThe PEN nickel plating film provided usually requires heat treatment after nickel plating. The temperature and time of heat treatment should be controlled within an appropriate range to avoid thermal damage to the PEN film. Normally, the baking temperature should be between 150-200 ℃, and the time should be controlled between 30 minutes and 1 hour. The specific parameters need to be adjusted according to the coating thickness and performance requirements.

2. Surface passivation treatment

Surface passivation treatment is an effective method to improve the corrosion resistance and adhesion of coatings. Passivation treatment can form a dense oxide film on the surface of the coating, thereby preventing further reaction and corrosion between the coating and the substrate. Advanced Institute (Shenzhen) Technology Co., LtdPEN nickel plating filmWhen performing passivation treatment, a dilute aqueous solution of chromic anhydride (CrO3, 1-10%) is usually used for soaking, and the treatment time is generally a few minutes. The processed coating not only has improved corrosion resistance, but also has good anti discoloration performance.

3. Preparation of composite coating

The preparation of composite coating is the process of adding one or several insoluble solid particles to the plating solution, allowing the solid particles to co deposit with metal ions. This method can endow the coating with higher wear resistance, corrosion resistance, and other special functions. In the preparation process of PEN nickel plating film at Advanced Institute (Shenzhen) Technology Co., Ltd., it is possible to consider adding nanoparticles or other functional solid particles to the plating solution to form a composite coating. For example, depositing a thin layer of chemical nickel with lower phosphorus content on top of a high phosphorus chemical nickel plating layer to form a double-layer chemical nickel plating structure can significantly improve the corrosion resistance of the plated parts.

4. Subsequent electroplating treatment

In order to improve the long-term corrosion resistance of the plated parts, electroplated zinc, cadmium or other sacrificial anode alloy surface layers can be covered on the electroless nickel plating layer. This method can significantly improve the corrosion resistance of the plated parts by forming a sacrificial anode protective layer. At Advanced Institute (Shenzhen) Technology Co., LtdPEN nickel plating filmDuring the preparation process, a layer of electroplated zinc or cadmium can be applied on top of the nickel plating layer according to customer requirements, followed by heat treatment at higher temperatures to improve the ductility of the coating and form a diffusion layer at the interface between different metal layers.

5. Other surface treatment techniques

In addition to the above methods, other surface treatment techniques can also be used to enhance the performance of PEN nickel plating film. For example, depositing a thin layer of high coercivity magnetic material, such as cobalt based alloy, on the surface of non-magnetic electroless nickel plating by vacuum sputtering can form high-performance magnetic recording devices. In addition, gold plating or chemical gold plating can be applied to the surface of the electroless nickel plating layer to improve the surface electrical connection performance.

conclusion

Through the above post-processing methods, it is possible to effectively improvePEN film nickel platingThe performance of the coating afterwards. The PEN nickel plating film provided by Advanced Institute (Shenzhen) Technology Co., Ltd. can significantly improve its mechanical strength, wear resistance, corrosion resistance, and other special functions through heat treatment, surface passivation treatment, composite coating preparation, subsequent electroplating treatment, and other surface treatment technologies after nickel plating, thus meeting its application needs in different fields. In practical applications, it is necessary to select appropriate post-processing methods based on specific application scenarios and performance requirements to obtain the best coating performance.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.