VFI®-5209 9.5 PCF Semi-Flexible Polyurethane Foam

Features & Benefits

• Great rebound and strength allow the foam to hold its shape
• Works as a backfill material to adjust the weight of a piece
• Self-skinning capabilities create a surface that can be primed or coated
• Convenient 1A:2B mix ratio by volume for quick and easy application
• Fast final cure speed for a quick turnaround on parts

Instructions for Use:

Mold Preparation

Molds must be dry and coated with a release agent to extend the life of the mold. The mold must be strong enough to hold shape if subject to packing pressure. For better results, you can use a heated mold up to 120°F to speed up the demold time. However, heating the mold will also decrease the pot life and final density. Compatible molds for casting include metal, urethane, epoxy, and platinum silicone.

Mixing, Pouring, & Curing

The material should be brought to a minimum temperature of 65°F before use. Premix the POLY “B” component until uniform before combining it with the ISO “A” component. When mixing large volumes of material, a proportioner is required to inject the material into a mold.

If mixing by hand, properly pour 1 part of the “A” component into 2 parts of the “B” component by volume, 52 parts “A” component to 100 parts “B” component by weight. It must be thoroughly mixed with a drill or power mixer before the 35-second cream time.

The material should be poured immediately into the lowest point of the mold or form. Allow space for the foam to expand. Avoid scraping material from the container while pouring, as this takes time, and the material may not be fully mixed.

Once poured, the mold should not be moved while the foam rises since movement could cause cells to collapse. To prevent deformation, allow the foam to remain in the mold or form until full cured. VFI-5209 should be allowed to cure for at least 15 minutes at room temperature before removing it from the mold. Thinner pours may require a longer cure time.

Cleanup

Clean application equipment with MEK or xylene before the foam cures. If the foam has cured, you can break it off the surface and wipe the rest off with xylene.

Safety

*Always read the safety data sheet before working with chemicals  

Use chemicals only as directed and for their intended purpose. Do not dispose of chemicals down the drain. Most chemicals must be disposed of as hazardous waste.

PPE to avoid all unnecessary exposure:

• Eye protection – wear chemical safety goggles or glasses
• Hand protection – wear chemically resistant protective gloves to prevent skin contact. Suitable materials may include chloroprene rubber (Neoprene), nitrile rubber, chlorinated polyethylene, polyvinyl chloride, and butyl rubber
• Body protection – wear suitable protective clothing. Cover as much exposed skin as possible to prevent skin contact.
• Respiratory protection – In case of insufficient ventilation, wear suitable respiratory equipment. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product, and the safe working limits of the selected respirator

Product Limitations

VFI-5209 contains isocyanate, which can be irritating to the skin and toxic if inhaled as particulate matter. Avoid prolonged breathing of vapors and repeated skin contact by using proper personal protective equipment. Use only with adequate ventilation. It must be protected from freezing. It is not UV color stable and has no long-term UV testing. If needed for exterior use, the foam must be painted or sealed. It is not fire-retardant and is unstable in water.

• Incompatible materials – A side: oxidizers. B side: none known
• Conditions to avoid – heat and incompatible materials
• Chemical stability – stable under normal storage conditions
• Reactivity & hazardous reactions – no reaction known under normal use
• Hazardous decomposition products – may include, and are not limited to, oxides of carbon

Potential Health Hazards

• May cause respiratory tract irritation. A side material may also cause allergy and asthma symptoms or breathing difficulties if inhaled.
• Causes skin irritation or sensitization: redness, edema, drying, defatting, and cracking of the skin.
• Causes serious eye irritation: discomfort, pain, excess blinking and tear production, marked redness, and swelling of the conjunctiva.
• May cause stomach distress, nausea, or vomiting if swallowed.

*If you are experiencing any of these symptoms, seek medical advice or attention. Call a poison control center or doctor if swallowed.

Click here for more information on the full technical data sheet.