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 :
Satellite MLI
