The Influence of Diurnal and Seasonal Variations of Relative Humidity and Temperature on Coal–Plastic Moisture Saturation in Open Climatic Conditions.

Autor: Salnikov, V. G., Startsev, O. V., Lebedev, M. P., Kopyrin, M. M., Vapirov, Yu. M.
Zdroj: Polymer Science -- Series D; Mar2023, Vol. 16 Issue 1, p131-136, 6p
Abstrakt: This paper presents the study of the mass variation of the aviation-intended epoxy coal–plastic plates during 6 years of exposure in the warm humid climate of Sochi, on an open area, under a canopy, and in a jalousie booth. We show that the surface temperature of the samples under the solar radiation influence overheats up to 30°C, causing a relative humidity decrease in air near the surface by 30%. Seasonal fluctuations of the air relative humidity entail sample mass fluctuations; we approximated them by the Fickian moisture-transfer model, taking into account destruction losses during the photo-oxidation under open climatic conditions. We performed a simulation making it possible to predict, with good accuracy, the temperature and humidity regimes of the coal–plastic surface and to determine the seasonal moisture-content fluctuations against the background of the destruction mass losses. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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