Insulcast I-Cast 140 FR Epoxy Potting Compound

Description

Insulcast I-Cast 140 FR is a flame retardant, highly thermally conductive epoxy potting compound for electronics that run hot and must survive heat, moisture, and vibration. Pour or pump it around the assembly and it cures to a hard protective mass that keeps the finished part working in the field.

Insulcast I-Cast 140 FR Benefits

• Seals out moisture, dust, and contaminants
• Cushions components against shock and vibration
• Moves heat away from hot-running parts at 2.3 W/mK
• Meets UL 94 V-1 for fire-safety requirements
• Holds strong dielectric isolation at 420 V/mil
• Handles a wide -55 to 155C service range

Common Applications

• Potting power supplies, transformers, and coils
• Sealing sensors, connectors, and control modules
• Protecting LED and lighting electronics
• Encapsulating medical device electronics
• EV and e-mobility power electronics

Typical Properties

• Mix ratio by weight: 100 to 3-4 with Insulcure 11B
• Viscosity, Part A: 220,000 cP
• Pot life at 25C: 2.5 hours
• Cure: fast schedule 2 hours at 120C; small mass 2 to 3 hours at 95C plus 1 hour at 120C; large mass 4 hours at 65C plus 2 hours at 120C; post-cure 4 hours at 150C
• Hardness: Shore D 90 to 95
• Service temperature: -55 to 155C
• Thermal conductivity: 2.3 W/mK
• Dielectric strength: 420 V/mil
• Flammability: UL 94 V-1

Surface Prep and Use

Mix the resin with Insulcure 11B curing agent at 100 to 3-4 by weight until uniform. Pour or pump around the assembly and degas under vacuum for a void-free pot in critical work. Cure on the schedule that fits the mass, then post-cure for 4 hours at 150C for full properties.

Ordering and Product Support

Browse the full range of encapsulants and potting compounds, or read more about the Insulcast line from ITW Performance Polymers.

Call (800) 220-1966 or email [email protected] for pricing, lead time, and technical help.