ITO / SiO2 Aluminized Polyimide Film
ITO / SiO2 coated aluminized polyimide film is typically chosen to be used
as the outer layer of MLI blankets on spacecrafts that experience low solar heat fluxes
like shaded surfaces, highly elliptical Earth orbits with long eclipses,
and deep space missions. The silicon dioxide coating tailors the material to be resistant
to atomic oxygen degradation that is mostly seen around Earth and other planetary bodies.
The addition of the ITO coating offers charge dissipation of the exterior surface with
minimal impact on thermal optical properties. Low Earth Orbit (LEO) spacecraft areparticularly
susceptible to charge build up as solar wind interacting with the Earth’s atmosphere creates
charge-bearing plasma.
Other planetary bodies with atmospheres have been known to exhibit a similar charge environment.
ITO / SiO2 aluminized Kapton® film is an excellent choice for :
- LEO missions that experience exposure to atomic oxygen and charge build up
- Moderately 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: -185°C to 125°C
- Thickness range: 25 μm - 127 μm
- Surface resistivity: ≤ 2,500 Ω/s
ITO / SiO2 Aluminized Polyimide Film Application :
Satellite MLI
