Silicone binders have been widely used for adhesives, sealants and thermal control coatings in space applications. Normally, the total mass loss (TML) value is higher than 1% and the collectable volatile condensed mass (CVCM) value is greater than 0.1% for silicone binders due to the existence of low molecular weight cyclic monomers in the synthesis process. In this paper, thermal vacuum treatment and solvent extraction technology are employed to remove the low molecular compounds from silicone binder used for space applications. The experimental results demonstrate that both methods are effective for preparing space-grade silicone binders.
Protection of Materials and Structures from Space Environment
- Pub Date:
- January 2009
- Space and satellite geodesy;
- applications of global positioning systems;
- Artificial Earth satellites;
- Polymers and organics