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Geem, Kevin M. Van
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article
Study of the degradation of epoxy resins used in spacecraft components by thermogravimetry and fast pyrolysis
Abstract
<p>Predicting the demisability upon re-entry of space debris objects is of great importance due to the threat these objects pose if they were to fall in an inhabited area. In particular, carbon/epoxy composite materials have been found on Earth in several occasions. Accurate models to assess the demisability of such components require, in particular, detailed thermal degradation data for the epoxy resin. In this work, we analyze a resin used to manufacture such components, using thermogravimetric analysis (TGA), organic elemental analysis, and pyrolysis coupled to comprehensive two-dimensional gas chromatography. The epoxy resin rapidly decomposed in a relatively narrow range of temperatures (300–400<sup>∘</sup>C) in more than 70 different volatile products. A one-step kinetic model is proposed for the pyrolysis of epoxy based on thermogravimetry observations. The information on the species and elemental composition can be used to develop more accurate material degradation models for predicting the demisability upon re-entry of space debris.</p>