VFI-2839 95 A Aliphatic Spray Coating

Thickness Requirements

The sprayable rubber should be applied in layers at least 40 mils thick, but applications of 80 mils or more will produce the most optimal results. Allow the first coat to become tacky before applying additional coats and stay within the 20-minute recoat window. If the coating fully cures between coats, it may cause delamination.

Equipment

When spraying, it requires heated, airless plural component spray equipment capable of producing a minimum spray pressure of 2,000 psi and heat between 140°F-160°F. Spraying at higher pressures, between 2,000-3,000 psi, may provide better mixing and optimal physical properties. It can also be used in an injection molding system.

Surface Preparation

Surfaces must be clean and free of contaminants such as dirt, dust, or debris. A release agent must be used on all products intended for demolding to prevent unwanted adhesion and extend the life of the molding surface. When enhanced adhesion is needed, use VFI-#11 on cementitious and masonry surfaces. Steel should be white blasted per SSPC-SP10 to remove all dust, coating, and mill scale. Sandblast or shot blast all concrete surfaces to achieve a profile equal to 80-100 grit sandpaper.

Mixing

Premix the B side (Poly) until uniform before use. Mix times may vary based on volume and mixing method. VFI-2839 must be brought to a minimum of 65°F for proper mixing and application.

Cleanup

The preferred cleanup solvent is xylene or MEK. When flushing out spray lines, we recommend using VFI-8005 Pump Flush to fully clean out the lines.

Storage/Shelf Life

Store between 60°F – 90°F in a clean, dry building. The shelf life of unopened containers is 12 months after the date of manufacture. Keep the material above 60°F to prevent it from freezing and ship it in heated trucks. Once open, use it immediately. If you plan on storing after opening, both sides must be nitrogen purged.

Precautions

VFI-2839 contains aliphatic isocyanate, which can irritate the skin and is toxic if inhaled as particulate matter. Avoid prolonged breathing of vapors and repeated skin contact by utilizing proper PPE. Use only with adequate ventilation. Protect the material from moisture exposure, as water will cause the A side (Iso) material to generate carbon dioxide, resulting in high pressure in closed containers. Do not thin or add foreign material to the product. See Safety Data Sheet for complete safety instructions.