Vespel SP-1 material degradation in space applications

[Ricardo Gomes]

Good afternoon,

I'm trying to search only based on bibliography or numerical and theoretical calculations the change of the thermal optical properties, namely the solar absorptivity, of a polyimide-based plastics (VESPEL SP-1) in space conditions (considering radiation, atomized oxygen atoms., etc)

My question is how could I estimate the variation on the thermal optical properties of this materials without doing any experimental test (ageing tests). Also in bibliography I didn't found any model or any empirical correlation...

Thank you in advance,
Ricardo Gomes

 

[Tom.G]

You might find something here: https://www.google.com/search?&q=vespel+site:nasa.gov