VFI-270 70 A Polyurea Spray Coating

VFI-270 70 A Polyurea Spray Coating is a flexible spray-applied coating that creates a smooth, durable film on flexible surfaces. The two-component material is 100% solids and has fast-setting capabilities to achieve high builds on vertical surfaces without sagging. As a polyurea, it has resistance to impact and thermocycling as well as low moisture sensitivity for use in all environments. VFI-270 provides an elastomeric surface without adding too much structure or weight.

Physical Properties	Test Method	Test Results
Hardness Shore A	ASTM D2240	72 A
Tensile Strength	ASTM D412	1,050 psi
Elongation	ASTM D412	600%
Tear Strength	ASTM D624	175 pli

Physical Properties

Test Method

Test Results

Hardness Shore A

ASTM D2240

72 A

Tensile Strength

ASTM D412

1,050 psi

Elongation

ASTM D412

600%

Tear Strength

ASTM D624

175 pli

Liquid Properties	Test Method	Test Results
Solids by Weight	ASTM D1644	100%
Solids by Volume	ASTM D2697	100%
Liquid Density A Side	ASTM D2939	8.88 lbs/gal
Liquid Density B Side	ASTM D2939	8.36 lbs/gal
Mixed Liquid Density	ASTM D2939	8.62 lbs/gal
Specific Gravity A Side	N/A	1.06 g/mL
Specific Gravity B Side	N/A	1.00 g/mL
Mixed Gravity B Side	N/A	1.03 g/mL
Ratio by Volume (A:B)	N/A	1A:1B
Ratio by Weight (A:B)	N/A	112A:100B
Viscosity A Side	ASTM D2196	550 cps
Viscosity B Side	ASTM D2196	400 cps
Gel Time	N/A	5 seconds
Place Into Service	N/A	4 hours
VOC	N/A	0

Thickness Requirements

We typically recommend spraying between 40 and 80 mils for the best coverage. More coats can be applied for improved impact resistance.

Post Cure

Projects can be put into service in as little as 4 hours, depending on application thickness, but full cure occurs in 3 days.

Storage/Shelf Life

The material shelf life is 12 months from the date of manufacture. Store in a dry, temperature-controlled space in sealed and unopened containers between 60°F – 90°F. Once open, use it immediately. Opened containers can be resealed with a nitrogen purge, but the material shelf life will ultimately shorten.

Mixing

Before spraying, the B side (Poly) material must be mixed until uniform. Mixing time will vary based on the volume of material used and the mixing method. Bring the material to a minimum temperature of 65°F.

Surface Preparation

Clean all surfaces of contaminants such as oils, dirt, or debris for ensured adhesion. The surface must be sealed with a release agent, especially if it is porous and you plan on demolding. Some surfaces may require sanding and a primer, so an adhesion test should be performed before coating. VFI’s recommended primer is VFI-#11. When applying over foam, allow the foam to age for at least 30 days so any gas can escape.

Equipment

VFI-270 should be sprayed using a high-pressure, high-temperature two-component spray rig. The spray equipment should be capable of heating the product and providing at least 2300-2500 psi of constant pressure.

Cleanup

VFI recommends using xylene or MEK as a cleanup solvent. When flushing through spray lines, VFI-8005 Pump Flush can be used to remove the material from the hoses.

Precautions

VFI-270 is not UV color-stable and has no long-term UV testing. The surface temperature will need to remain between 40°F – 100°F for the best results. The A side of this product contains isocyanate, which may cause skin irritation and inhalation can be toxic. Avoid prolonged breathing of vapors and repeated skin contact. When spraying, use a supplied air respirator or respirator with forced air ventilation in a chemically approved spray booth. Do not thin or add foreign material to the product. See the Safety Data Sheet for all safety information.