Vespel SP-1 material degradation in space applications

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SUMMARY

The discussion focuses on estimating the variation in thermal optical properties, specifically solar absorptivity, of Vespel SP-1 polyimide-based plastics under space conditions. Ricardo Gomes seeks methods to assess these changes without conducting experimental aging tests, highlighting a lack of existing models or empirical correlations in the literature. Participants suggest exploring NASA resources for relevant studies and data on Vespel SP-1's performance in space environments.

PREREQUISITES
  • Understanding of thermal optical properties and solar absorptivity
  • Familiarity with polyimide materials, specifically Vespel SP-1
  • Knowledge of space environmental factors affecting materials, such as radiation and atomic oxygen
  • Research skills to navigate scientific literature and databases
NEXT STEPS
  • Investigate NASA's research on Vespel SP-1 and its performance in space conditions
  • Explore theoretical models for predicting material degradation in space environments
  • Study the effects of atomic oxygen on polymer materials
  • Review existing literature on thermal optical property changes in polyimides
USEFUL FOR

Material scientists, aerospace engineers, and researchers focused on polymer degradation in space applications will benefit from this discussion.

Ricardo Gomes
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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
 
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