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Inorganic Materials: Applied Research

, Volume 10, Issue 6, pp 1421–1428 | Cite as

On the Microstructure and Chemical Composition of the Polyimide Film Surface and Condensed Substances after Long-Term Exposure at the Mir Space Station

  • I. S. DeevEmail author
  • E. F. Nikishin
POLYMER COMPOSITE MATERIALS

Abstract

Using scanning electron microscopy, electron probe microanalysis, and infrared spectroscopy, we comprehensively studied changes in the microstructure and chemical composition of the surface layers of the PM-1E polyimide film, as well as the substances condensed on it, which for a long time (1218 days) was exposed at the Mir orbital space station. It was shown that, during the exposure in space, the microstructure and chemical composition of the film changes only in the first layer of the packet and that no such transformations are observed in the layers located below. On the open surface of the first layer of the polyimide film, new phase formations of various shapes and sizes with both film and needle-like structures differing in chemical composition were discovered. It was found that the condensed matter formed consists of compounds involving silicon, iron, copper, zinc, chlorine, potassium, and calcium, which are likely to precipitate from the own external atmosphere of the orbital station.

Keywords:

polyimide film condensed matter microstructure chemical composition Mir orbital space station long exposure 

Notes

FUNDING

This work was carried out within the framework of the comprehensive research direction 13: Polymer Composites (Strategic Directions for the Development of Materials and Technologies of Their Processing for the Period up to 2030) [1].

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.All-Russian Scientific Research Institute of Aviation Materials (VIAM)MoscowRussia
  2. 2.Khrunichev State Research and Production Space CenterMoscowRussia

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