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0-VOC Line Touts Corrosion Protection

Wednesday, March 30, 2011

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CETCO Corrosion Protection Solutions has introduced a new line of water-based, zero-VOC protective coatings designed to adhere directly to rust and suitable for application in confined spaces.

The new Perlastic line is formulated for industrial applications, with an asphalt-based formula designed to withstand many of the aggressive chemistries found on industrial sites. Perlastic can be applied to most substrates.

The line’s chemical resistance makes it suitable for primary and secondary containment, and the coatings meet the Environmental Protection Agency’s “Spill Prevention, Control and Countermeasure (SPCC) Rule” 112.40, the manufacturer says.

The coatings can be used in the mining, agriculture, wastewater treatment and storage, power plant and fabricated structural steel industries.

Perlastic SG

Perlastic Spray Grade (SG) is a two-part, spray-applied elastomeric membrane engineered to halt corrosion/chemical attack of the substrate. It is specially formulated for use as a corrosion protection barrier, tank lining, secondary containment or equipment protective coating.

 Zero-VOC, plural-component Perlastic SG
 Zero-VOC, plural-component Perlastic SG is designed to set immediately.

The self-priming coating provides resistance to salts and mining-related chemistries, moisture vapor permeation and UV weathering. SG sets in seconds (full curing in 24-48 hours) without using solvents, the manufacturer says.

Perlastic membrane thicknesses can be built from 40 to 120 dry mils in a single application of multiple passes. Thicknesses of 60 mils (1.5mm) are required for exposed corrosion protection applications; 80 mils (2mm), for immersion. About six gallons will coat 100 square feet at a 60 dry mil (1.5mm) application.

Perlastic RG

Single-component Perlastic Roller Grade (RG) is a thick, brushable coating used alone or with Perlastic SG. Perlastic RG is best used alone where corrosion protection is required and access and/or size of application make spraying impractical, the manufacturer reports.

 Brushable Perlastic RG
 Brushable Perlastic RG is used when spraying is not practical.

In many applications, RG can be used for “striping” corners and edges prior to spraying the SG material. For gaps greater than 1/8” inch, the manufacturer advises a “three coursing” method. This involves applying reinforcing fabric to bridge the gaps, applying RG over the tape two inches beyond the fabric, and then spraying the SG.

Air-cured RG will build about 25 wet mils thickness in one application, generating 10 mils dry film thickness. More thickness requires additional applications, but these should not be performed until the initial coat turns black.

Perlastic RG can be applied with any paint brush directly to a prepared, but rusted, surface and to previously coated areas.

Perlastic TG

Perlastic Trowel Grade (TG) is a thick, trowelable coating used alone or with Perlastic SG or RG materials. Perlastic TG is best used to properly prepare substrates, such as crack filling and bugholes.

 Perlastic TG
 Perlastic TG fills cracks and can bridge up to one-half inch.

Perlastic TG is applied with a putty knife or flat-edged trowel. Smooth material as much as possible to ensure a proper finish. Allow to dry before applying additional coats, or before using Perlastic RG or SG.

Based in Hoffman Estates, IL, CETCO, a wholly owned subsidiary of AMCOL International Corp., provides lining and remediation technologies, corrosion protection and building envelope products, and contracting services, including on-site support and technical assistance.

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Tagged categories: CETCO; Confined space; Corrosion; Protective coatings; VOC-free; Water-borne

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