The issue of protecting metal products from corrosion and prolonging their durability has always been at the forefront of the production and construction spheres. Among the popular methods offered for this purpose are thermoplastic paints and galvanizing process. In this article, we will compare these two approaches, as well as consider how they can be used together to maximize protection.Principle of operation
Thermoplastic paints are polymer coatings that are applied to metal and then melted, creating a durable and environmentally resistant protective film. Due to their structure, such paints have excellent resistance to chemical influences and moisture.
Zinc plating involves applying a layer of zinc to the surface of the metal, which provides protection against corrosion. This process not only slows down corrosion processes, but also serves as additional protection due to the cathodic effect: if the zinc layer is damaged, it continues to protect the substrate from oxidation.
Protective properties and service life
Thermoplastic paints provide high protection against corrosion and mechanical damage. Proper application and maintenance of this coating can provide a service life of up to 50 years, making it an attractive choice for long-term projects. However, it is worth remembering that like any coating, thermoplastic paints can require periodic maintenance.
On the other hand, galvanizing, especially using hot-dip technology, can also provide protection for up to 50 years. This long service life makes galvanizing the preferred choice for use in corrosive environments. Regardless of the method chosen, it is important to carry out regular checks on the condition of the coating.
Environmental friendliness
Compared to traditional methods of protection, thermoplastic paints are often recognized as more environmentally friendly. They contain no harmful substances and can be used in sensitive areas such as the food industry.
Zinc plating can produce some waste and emissions, but modern technology can reduce negative impacts. Despite this, environmental considerations remain an important part of choosing a protection method.
Cost
When evaluating the cost of thermoplastic paints, it should be kept in mind that despite high initial costs, they offer significant savings due to their ease of repair and maintenance. Damaged areas are easily repaired, reducing overall costs.
Zinc plating requires significant initial costs, but its long service life can offset these costs in the long run. Nevertheless, combining thermoplastic paints and galvanizing may be the best solution.
Combined use
Combining thermoplastic paints with galvanizing can provide even greater protection. Applying a thermoplastic coating layer on a pre-treated zinc-coated surface provides additional protection against mechanical damage and corrosion, and improves the aesthetic qualities of the product.
Conclusion
The choice between thermoplastic paints and galvanizing depends on the specific requirements of your project. The combined use of these two methods can maximize corrosion protection and extend the life of metal products. Assessing the operating conditions, desired service life and environmental aspects will always be key factors in your decision.