SiO₂ Protected Aluminized Kapton® Film

Since 1985 Dunmore Aerospace has been providing material solutions for the space industry. SiO₂ coated aluminized Kapton® film is constructed of an SiO₂ coating on the first surface and an aluminum coating on the inside surface of polyimide film. The thermal management material is used as the outer surface (space facing side) of an MLI blanket for low to high temperature applications. SiO₂ aluminized polyimide film has moderate absorptance and emissivity values along with protection against atomic oxygen (AO).

Reasons to Choose SiO₂ Protected Aluminized Kapton® Film

SiO₂ coated aluminized Kapton® film is typically chosen to be used as the outer layer of MLI blankets on spacecraft that experience low solar heat fluxes like shaded surfaces, highly elliptical Earth orbits with long eclipses, and deep space missions. The silicon dioxide surface is resistant to atomic oxygen degradation that is mostly seen around Earth and other planetary bodies. In general, the optical properties and sink temperatures achieved by SiO₂ aluminized polyimide film are comparable to bare aluminized Kapton® film.

SiO₂ coated aluminized Kapton® film is excellent for:

• LEO missions that are exposed to atomic oxygen
• Low to high temperature environments
• Moderate absorptance and emissivity applications

Material Properties

• Typical outside surface α / ϵ values: 0.60 to 0.63
• Operating temperature: -251°C to 287°C
• Thickness Range: 25 μm - 127 μm

SiO₂ Aluminized Polyimide Film Application

DuPont™ and Kapton® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company.

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