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Month: June 2023

NEWS ALERT: Why Use Cortec® VpCI® Primers?

A primer is a great addition to any coatings system wherever time and budgets allow. When it comes to painting metal, Cortec® VpCI® primers are a great choice for coating adhesion and corrosion protection.

Why Use Cortec® VpCI® Primers?

VpCI® Primers and Adhesion

One of the main purposes of a primer is to get good adhesion so the final topcoat sticks firmly to the surface below. While most Cortec® Coatings can be applied direct-to-metal, applying one or two coats of primer first makes the system even stronger. VpCI®-375 is a fast-drying thixotropic coating that can be used as a base layer on carbon steel and copper. Other metals such as aluminum, stainless steel, and galvanized steel are more difficult for coatings to adhere to and should be primed with VpCI®-373 wash primer to help subsequent primer/topcoat layers stick to the metal.

VpCI® Primers and Corrosion Protection

Another important reason for using VpCI® primers is corrosion protection. While other metal primers could theoretically be used with a VpCI® topcoat, it would not allow the VpCI® corrosion inhibitors to have direct access to the metal surface. Using a VpCI® primer gets Cortec® corrosion inhibitors as close to the metal surface as possible and is therefore an ideal foundation to a Cortec® Coatings system.

Get VpCI® Directly to the Surface

Cortec® Coatings offer the flexibility of choosing the convenience of a one-coat water-based system or the enhanced protection of a multi-coat VpCI® primer/topcoat system. Whenever time and budget allow, go for the best protection by getting VpCI® primer directly to the surface. Contact Cortec® for specific project recommendations.

Keywords: paint for metal, metal primers, corrosion inhibitors, corrosion protection, how to get good coating adhesion, Cortec Coatings, VpCI, painting best practices, how to choose a coating, why use primer

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CASE HISTORY SPOTLIGHT: Case History #548: Alternative to Sandblasting on Rusty Sunflower Oil Reservoirs

The customer needed to remove rust and protect the exteriors of sunflower oil reservoirs. However, mechanical rust removal such as sandblasting and water blasting were restricted in the area. As a result, the customer removed loose rust with a wire brush and pressure washed the surfaces with VpCI®-414 and water. After cleaning, the customer applied CorrVerter® Rust Converter Primer before applying a 2K epoxy middle coat followed by a 2K enamel topcoat. The surface prep problem was solved, and the customer was very satisfied with Cortec’s alternative to sandblasting.

Read the full case history here.

Keywords: alternative to sandblasting, rust converter, Cortec case history, sandblasting restrictions, surface prep problems, rusty surface prep, coatings for tanks, exterior paint for tanks, CorrVerter, VpCI

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CASE HISTORY SPOTLIGHT #737: Preventative Maintenance for Sauerkraut Plant Fork Trucks

Fork trucks leased to a sauerkraut plant quickly lost resale value from exposure to a corrosive environment of brine, salt, and sauerkraut. The rental company therefore began applying Cortec® products as needed during monthly maintenance to slow down the corrosion. CorrVerter® Rust Converter Primer was used to passivate rusty surfaces. EcoShield® VpCI®-386 was applied over painted metal surfaces, and CorShield® VpCI®-369 was used on moving metal parts. ElectriCorr™ VpCI®-239 was sprayed on exposed electrical connections. The rental company has seen a significant difference in the ability of the equipment to remain in resalable condition to the end of the lease period and has implemented the same preventative maintenance strategy on equipment leased and used in another corrosive industrial environment.

Read the full case history here.

Keywords: case history, preventative maintenance, sauerkraut corrosion, forklift maintenance, forklift corrosion, paint for metal, painting rusty surfaces, Cortec, rust primer

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PRESS RELEASE: Choosing Paint for Metal in Fast-Paced, Extra Slip, High Temp Environments

Finding the best paint for metal involves much more than picking a favorite color. In addition to good adhesion and rust prevention, a metal coating must be equipped to meet force-dry, high slip, or high temp requirements in certain applications. To address these needs, Cortec® offers two specialty versions of EcoShield® VpCI®-386, a high-performing water- based anticorrosion coating for industrial applications.

EcoShield® VpCI®-386

Two Anticorrosion Paints—Three Special Features

EcoShield® 386 FD is a water-based acrylic one coat system that can be applied direct-to-metal (DTM) for protection in harsh, outdoor, unsheltered applications. It was specifically designed for fast-paced, force-dry applications, common in manufacturing environments. In addition to outstanding corrosion protection at 1.5-3.0 mils (37.5-75 µm) DFT (dry film thickness), EcoShield® 386 FD force-dries in just 5-10 minutes at 150 °F (65 °C) and has good hot hardness. EcoShield® VpCI®-386 HT Slip Coating is another direct-to-metal water-based topcoat that offers excellent corrosion protection at 1.5-2.0 mils (37.5-50.0 µm) DFT. It is heat resistant up to 500 °F (260 °C) or more (depending on color) and improves surface slip. The coating is thixotropic and resists sagging and running during application. Both EcoShield® 386 FD and EcoShield® VpCI®-386 HT Slip Coating are UV resistant and low VOC.

Where Are Force-Dry, Extra Slip, High Temp Coatings Needed?

While it would be difficult to list all the industrial applications where force-dry, extra slip, or high temp coatings could be used, the following examples are excellent springboards for exploring options.

Force-Dry Applications:

Fast-paced manufacturing applications are the number one candidate for EcoShield® 386 FD. Many spray or dip lines move so quickly that the parts pile up at the end of the line. This is bad news if parts are hot and sticky—they could easily adhere to each other and potentially damage the coating when components are pulled apart. EcoShield® 386 FD, which is designed for force-dry applications and has good hot hardness, will reduce the risk of parts sticking together. This feature is a potentially huge advantage in countless manufacturing applications where pipes, hooks, castings, and a variety of other equipment components are made.

Extra Slip Applications:

Electrical conduits are a prime example of where EcoShield® VpCI®-386 HT Slip Coating is beneficial. A protective ID (inner diameter) coating can be critical for new piping stored outdoors or shipped through harsh, corrosive conditions. However, when it comes time to install the conduits, electrical wires must be able to slide easily through the tubing. EcoShield® VpCI®-386 HT Slip Coating makes this possible while also inhibiting corrosion. The same benefits would apply to other metal surfaces, parts, or equipment in need of a protective coating that is slippery.

High Temp Applications:

In addition to needing extra slip, electrical conduits are a great illustration (although by no means the only example) of a high temp application. These pipes start out as flat pieces of metal that are rolled into tubes, welded, and internally painted before the welding heat can cool down. EcoShield® VpCI®-386 HT Slip Coating was designed to withstand this extra heat during coating application and similar high heat curing processes. It can also be used on equipment that may reach temperatures up to 500 °F (260 °C) during operation.

The main purpose of Cortec® Coatings is to protect metals from corrosion. However, when special requirements such as force-drying, extra slip, or high temps enter the equation, Cortec® is ready to make the solution fit the need. Contact Cortec® to find out if these two specialty coatings are the right paints for your metal!

EcoShield® VpCI®-386 HT Slip Coating

Keywords: paint for metal, corrosion inhibitors, rust prevention, anticorrosion coating, Cortec, metal coating, metal corrosion, water-based coating, problem with painted parts sticking together, high temp coating

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