Polyimide foam provides high-temperature insulation that is lightweight, fire resistant, and low outgassing. It can also provide acoustical insulation.

Polyimide foam resists higher temperatures than silicone and closed cell EPDM foam making it ideal for high-heat applications that require long-term performance.

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Advantages of Polyimide Foam

Polyimide foam is one of the many gasket materials that ISP die cuts, but its applications aren’t limited to environmental sealing. When polyimide is expanded into foam, this synthetic material develops a cellular structure. These cells can be open or closed.

Closed Cell Polyimide Foam

Contains air-filled pockets rather than open, interconnected ones. Because air has a relatively low thermal conductivity, it serves as a thermal barrier.  

Open Cell Polyimide Foam

Used for acoustic insulation, the open cells  trap and dissipate sound energy within their porous structure.

Both types of polyimide foams can resist high heat. Depending on the specific formulation, this includes continuous-use temperatures up to 300°C (572°F) and intermittent-use temperatures as high as 400°C (752°F). Kapton® polyimide foam is an example of a high-performance material.

ISP Capabilities

ISP die cuts sheets and rolls of thermal insulation materials, including polyimide foam, made by our material partners. ISP also converts customer-supplied materials and provides value-added services such as slitting and laminating. For example, ISP can apply a pressure-sensitive adhesive (PSA) before die cutting your insulation to your required specifications.

From prototyping through production, ISP can be an extension of your engineering team

To discuss your thermal management application, contact us online or call (800) 984-1811.

Technical Specifications for Polyimide Foam

Applications for Die Cut Polyimide Foam

Die cut polyimide foam is used in aerospace, marine, rail and automotive, industrial and electronic, and construction and architecture applications. Unlike polyurethane or polystyrene foams, polyimide foams can withstand higher temperatures and more aggressive environments.

Marine

The marine industry uses polyimide foam for thermal insulation and acoustic insulation in bulkheads, engine bays, and noise-sensitive compartments. Typically, closed cell polyimide foam is used for thermal insulation and open cell polyimide foam is used for acoustic insulation.

Industrial Equipment

Polyimide insulation also helps to regulate the temperature of pumps, compressors, and refrigeration systems. It protects components from ambient heat and prevents heat loss for furnaces and processing machinery.

Aerospace

Originally developed for use by NASA, polyimide foam provides lightweight thermal insulation in satellites, spacecraft, and aircraft cabins. It’s used in ducting, fuselage walls, battery compartments, and for avionics insulation. With its low-temperature range, polyimide foam is also used to insulate the cryogenic fuel tanks on spacecraft. These foams remain flexible even at very low temperatures.

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