Influence of accelerated electrons, solar vacuum ultraviolet, and atomic oxygen on the electrical properties of various types of polymeric materials of spacecraft external surfaces is investigated. It is shown that upon irradiation by 95 keV electrons with fluence of 5 × 1012 cm−2 and solar quanta with a dose of 1500 equivalent sun hours, the volume electrical resistivity does not change or changes by no more than one order of magnitude for some types of the polymeric materials. Irradiation with atomic oxygen with an energy of ~ 5 eV does not lead to a change in bulk resistivity of materials, while the surface resistivity alters depending on the type of polymer. It has been established that isothermal heating in a vacuum of non-irradiated and irradiated with atomic oxygen polymeric materials for a long time leads to the appearance of maxima in the kinetic curves of changes in surface resistivity. A physical model is proposed based on the assumption that at least two processes associated with the evaporation and diffusion of sorbed water molecules or hydroxyl groups into the near-surface layers of polymers are involved in the formation of such maxima.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Space Radiation Effects on Surface and Bulk Resistivity of Polymeric Materials


    Additional title:

    J Astronaut Sci


    Contributors:


    Publication date :

    2023-09-26




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Space radiation resistant transparent polymeric materials

    Giori, C. / Yamauchi, T. / USA, National Aeronautics and Space Administration | TIBKAT | 1977



    Effects of Radiation Damage on Polyimide Resistivity

    Cooper, Russell / Ferguson, Dale / Engelhart, Daniel P. et al. | AIAA | 2016



    Effects of Radiation Damage on Polyimide Resistivity

    Cooper, Russell | Online Contents | 2017