VFI®-754 8 PCF Flexible Polyurethane Foam

Features & Benefits

• Great rebound and strength allow the foam to hold its shape
• Water-based formula, so there are no toxic blowing agents used
• Fast final cure speed for a quick turnaround on parts
• Works as a backfill material to adjust the weight of a piece

Instructions for Use:

Mold Preparation

Molding material must be sealed and released to prevent unwanted adhesion. We recommend using a wax-based release or a similar release agent for the best results. Do not use a silicone-based release, as this will collapse the foam.

The mold must be strong enough to hold shape if subject to packing pressure. Compatible molds for casting include aluminum. Do not use a silicone mold or free-rise mold. We typically do not recommend overpacking more than 2 times the original PCF. To hit your yield and speed up the demold time, you must heat the mold up to 100°F. However, heating the mold will also decrease the pot life and final density.

Mixing, Pouring, & Curing

The material should be brought to a minimum temperature of 65°F before use. Premix the B side (Poly) until uniform before combining with the A side (Iso). Pour the measured B side into the measured A side and mix rapidly with a drill or power mixer. Move the mixer through the center and side of the mixing container until uniform. The material must be thoroughly mixed before the 30-second cream time (initial rise). You can continue to mix as you pour it into the mold or form.

The material should be poured immediately into the lowest point of the mold or form. Avoid scraping material from the container while pouring because the material may not be fully mixed. Be careful when overpacking because the foam will generate increased force. If your mold is not strong enough, it will break.

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 fully cured. VFI-754 should be allowed to cure for at least 2 hours at room temperature before removing it from the mold.

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 tightly fitted chemical safety goggles or glasses
• Hand protection – wear chemical-resistant protective gloves to prevent all skin contact. Suitable materials may include chloroprene rubber (Neoprene), nitrile rubber (Buna-N), chlorinated polyethylene, polyvinyl chloride (Pylox), and butyl rubber
• Body protection – wear suitable protective clothing
• 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-754 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 using proper personal protective equipment. Use only with adequate ventilation. It is not UV color stable and has no long-term UV testing. 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 dangerous 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.