VFI-2626 65 D Brushable Hard Coat

Thickness Requirements

Apply the coating at a minimum rate of 60 mils thick to develop a uniform film over the piece. The best film properties can be achieved at 100 mils or greater.

Equipment

VFI-2626 can be applied to any prepared substrate with a chip paint brush, notched trowel, or squeegee.

Surface Preparation

Surfaces should be clean and free of oils, dirt, debris, or other contaminants. Depending on the surface, primer or additional sanding prep may be required.

• EPS – The foam must be aged for at least 30 days so any gas can escape. We recommend using 2 PCF foam for an optimal cost-to-quality ratio, but 1-3 PCF is acceptable. Ensure that the surface is clean and dry before you begin applying.
• Wood – The wood should be dry and contain less than 11% moisture; otherwise, it should be primed or mist-coated (a light dusting followed by the main application of the coating).
• Metal – The surface must be cleaned by roughly sanding or sandblasting to SP6 to remove rust, mill scale, dirt, and other contaminants.
• Existing hard coat – Surfaces must be sanded and/or primed before application to ensure adequate long-term adhesion.

Mixing

Thoroughly mix the Poly side (B) before combining. The pot life can be extended by mixing smaller quantities (ex. 200 grams will yield a 15-20-minute pot life while the full mix will yield about an 8-minute pot life). When pouring the material by hand, pour the pre-weighed Iso into the pre-weighed Poly. Mix the two until uniform, then transfer to a new container and mix until uniform again before use. VFI-2626 must be fully mixed and used before the pot life expires. Mix times will vary depending on material volume and mixing method.

Post-Cure

For the best results, the temperature must stay between 50°F – 100°F during application. Curing will depend on film thickness and substrate temperature. A full cure may take up to 3 days at room temperature. The coated structure can be placed into service after curing at room temperature for a minimum of 24 hours. Higher hardness can be obtained by post-heating between 90°F – 110°F after 6 hours of initial curing. For theming purposes, begin priming or painting the coating at the first sign of cure to maximize adhesion.

Cleanup

Tools and equipment used to apply VFI-2626 can be cleaned with xylene or MEK.

Storage/Shelf Life

The shelf life of unopened containers is 12 months from the date of manufacture. Store the product between 60°F – 90°F in a clean, dry building. Once open, use it immediately. After opening, it is possible to store unused material by nitrogen purging both sides immediately after use.

Precautions

VFI-2626 is not UV color-stable and has no long-term UV testing. It must be top-coated if intended for outdoor application. Isocyanate in the A side may be irritating to the skin and toxic if inhaled. Avoid prolonged breathing of vapors or repeated skin contact. Proper protective clothing and a fresh air supply respirator must be used during application. Use only with adequate ventilation. It must be protected from exposure to moisture. Water will cause the A side material to generate carbon dioxide, causing high pressure in sealed containers. Do not thin or add foreign material to the product. See Safety Data Sheet for complete safety information.