Zinc rich primers are specialized types of paint that contain a high concentration of zinc. This makes them ideal for use on steel and iron surfaces, as the zinc will protect the metal from rust and corrosion. Zinc-rich primers can also be used on other surfaces, such as aluminum and concrete, but they are most commonly used on steel and iron.
One of the main benefits of using a zinc-rich primer is that it provides an excellent barrier against corrosion. The high concentration of zinc acts as a sacrificial anode, meaning that it will corrode before the steel or iron does. This protects the metal from rust and corrosion and extends its lifespan.
Rust-Oleum Rust-O-Zinc Inorganic Zinc Rich Primer
Table of Contents
Rust-O-Zinc Inorganic Zinc Rich Primer is a two component, ethyl silicate-based primer that provides cathodic corrosion protection to steel substrates. Rust-O-Zinc is designed to be used as a primer on blast-cleaned steel where maximum corrosion protection is needed.
- High zinc loading—up to 86% in the dried film
- High heat resistance—up to 750°F (399°C) continuous
- Rapid cure—dry to handle in 45 minutes at 60°F (16°C) and 50% relative humidity
- Low-temperature cure down to 0°F (-18°C) on frost-free surface
- Very good resistance to salting
- It May be applied with standard airless or conventional spray equipment
To prepare the surface, wash it with Krud Kutter® Original Cleaner & Degreaser, commercial detergent or another suitable cleaner. Rinse it with fresh water and let it dry. Make sure the surface is completely dry before you start. Then use an abrasive blast to clean it, following the instructions in SSPC-SP 6/NACE No. 3, “Commercial Grade Power Tool Cleaning to Bare Metal.” If you don’t have access to an abrasive blast, you can use a power washer with a 0° or 15° tip and hold it 10–12 inches from the surface. Start at the top and work your way down. Rinse the surface with fresh water and let it dry completely.
You can apply Rust-O-Zinc with an airless or conventional sprayer. If you’re using an airless sprayer, set it to a low pressure—around 1000 psi. If you’re using a conventional pump sprayer, fill it no more than half full to avoid overpressurizing. Start by spraying the underside of the surface, then work your way up. Overlap each stroke by 50%.
Rust-O-Zinc will start to dry in about 15 minutes, but it won’t be fully cured for 24 hours. For best results, apply a second coat after the first coat has dried.
Zinc-rich primers are an excellent choice for protecting steel and iron surfaces from rust and corrosion. They provide a high level of protection and can extend the lifespan of the metal. If you’re looking for maximum protection, choose a zinc-rich primer with high zinc content.
Rust-O-Zinc Inorganic Zinc Rich Primer protects your surface from corrosion if it is exposed to pH levels between 5 and 9. If the surface is exposed to environments outside of those pH levels or severe chemical exposures, you will need a top coat that is suitable for those conditions. Do not use alkyd topcoats over Rust-O-Zinc.
When to use a zinc-rich primer
Zinc-rich primers should be used on steel and iron surfaces that are exposed to high levels of corrosion, such as in industrial or marine environments. They can also be used on other surfaces, such as aluminum and concrete, but they are most commonly used on steel and iron.
If you’re looking for maximum protection against rust and corrosion, choose a zinc-rich primer with a high zinc content. Rust-O-Zinc Inorganic Zinc Rich Primer contains up to 86% zinc in the dried film. It provides excellent protection against corrosion and is ideal for use in industrial or marine environments.
Inorganic zinc vs. organic zinc coatings
There are two types of zinc-rich primers: inorganic and organic. Inorganic zinc coatings, such as Rust-O-Zinc Inorganic Zinc Rich Primer, contain a high level of zinc in the dried film. They provide excellent protection against corrosion and are ideal for use in industrial or marine environments.
Organic zinc coatings, on the other hand, have a lower level of zinc in the dried film. They are less effective at protecting against corrosion but are more flexible and easier to apply. Organic zinc coatings are typically used in architectural applications, such as on bridges or buildings.
Projects that can benefit from using a zinc-rich primer
Zinc-rich primers can be used on a variety of projects, both big and small.
Some common applications include:
- Commercial and industrial buildings
- Marine structures
- Bridges
- Storage tanks
- Pipelines
- Structural steel
- Railings
- Fences
Advantages and disadvantages of zinc-rich primers?
Advantages:
- Provide a high level of protection against rust and corrosion
- Can extend the lifespan of the metal
- Are available in both organic and inorganic formulations
Disadvantages:
- Inorganic zinc coatings are more difficult to apply than organic coatings
- They are not suitable for use in environments with pH levels outside of 5-9
FAQ
What is the difference between zinc silicate and zinc rich primer?
Zinc silicate and zinc rich primer are both types of zinc-based primers. Zinc silicate is an inorganic coating, while zinc rich primer is an organic coating. Both types of primers provide a high level of protection against rust and corrosion, but zinc silicate coatings are more difficult to apply than zinc rich primers.
Which primer uses zinc dust?
Zinc-rich primers use zinc dust to provide a high level of protection against rust and corrosion.
Is zinc rich primer rust proof?
No, zinc rich primer is not rust proof. It is, however, highly effective at preventing rust and corrosion.
What is epoxy zinc rich primer?
Epoxy zinc rich primer is a type of zinc-rich primer that contains epoxy resins. These resins provide excellent adhesion and durability, making them ideal for use in industrial or marine environments.
What is zinc silicate primer?
Zinc silicate primer is a type of zinc-rich primer that contains silicates. Silicates are inorganic compounds that provide excellent protection against corrosion.
Overall
Rust-O-Zinc Inorganic Zinc Rich Primer is an excellent choice for protecting steel and iron surfaces from rust and corrosion. It provides a high level of protection and can extend the lifespan of the metal. If you’re looking for maximum protection, choose a zinc-rich primer with the high zinc content.
Leave a Reply