The STEPANFOAM® line of polyisocyanurate and polyurethane pour foams and spray foams has over four decades of proven performance in a variety of aerospace, defense and other specialty industries. Key applications include electronic potting of antennas and radomes, composite cores, prototype tooling, cryogenic insulation and blast resistance. High-temperature RTM and autoclave-capable products are also available. Stepan will certify that its STEPANFOAM line conforms to a wide range of military and prime-contractor performance specifications.
Why Expanding Foam?
Molding expanding foam by pouring, spraying or injecting allows for quick, efficient reproducibility of parts. The process is low-cost compared to large machining operations, and eliminates the need for post-processing of the foam, such as gluing. Users can fill complex geometries and easily encapsulate internal components while reducing the amount of waste produced by fabricating blocks and sheets. The finished part density can also be easily customized by molding different quantities of liquid material. Finally, the self-skinning nature of expanding foams enhances component aesthetics and reduces moisture infiltration.
STEPANFOAM Engineered Specialty Foams
- Quickly fills complex geometries
- Thermal stability up to 400º F (204º C)
- Exceptional compressive strength and insulation values with minimum weight
- Low dielectric constant
- Flame-retardant formulations available
- Wide range of densities
- Extensive experience with the US Department of Defense and NASA
End-use Applications
Lightweight, high-strength composite core foams
- Mold lightweight, high-strength, complex composite sandwich cores for use with the following processes:
- Autoclave cure to 350°F (177°C) and 85 psi (6 atm)
- RTM / VARTM to 400°F (203°C)
- Filament winding
- RIM
- Out-of-autoclave processes
- High strength-to-weight ratio
- Void fill and structural foams for small and large cross-sections
- Ballistic and energy-absorbing foams for use in light-weight composite armor applications
High-strength moldable tooling foams
- Save time and reduce waste making patterns and custom tooling for short runs and prototypes
- Eliminate the need for gluing and improve durability by casting tools/patterns as a single piece
- Low co-efficient of thermal expansion (CTE)
- 350°F (177°C), 85 psi (6 atm) autoclave-durable pour foams and spray foams
- Products stable up to 400°F(203°C) for high-temperature RTM / VARTM and out-of-autoclave applications
- Cured foam is machinable for post-treatment, if necessary
- Suitable for "rapid tooling" processes
Cryogenic fuel insulation foams
- Superior insulation value for a given weight, compared to most available insulation materials (R-value > 6.8 / inch at 70°F(25°C) and > 15 / inch at -360°F(-218°C)
- Spray foams available for large surface coverage (Spray-On Foam Insulation or "SOFI")
- Pour foams available for smaller voids and closeout
- Easily encapsulate pipes and fittings
- Durable through multiple cryogenic fueling and defueling cycles
- Dimensionally stable from below -400°F(-240°C) to above 300°F (150°C)
Low Dielectric Constant Foams for Electronic Potting
- Easily encapsulate and ruggedize electronic components in radomes, antennas, radios and batteries
- Dielectric values as low as 1.03 and loss tangents as low as 0.0004 available at 9.375 GHz
- High-temperature stability above 350°F(177°C), for select products
- Flame-retardant formulations available
- Proven products in use by major government contractors
See all Stepan STEPANFOAM products.
For more information, please contact kits@stepan.com, or dial (847) 501-2289.