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BIODEGRADATION OF WASTE LOWVISCOSITY EPOXY RESIN
Abstract
Nowadays, the leading place in space industry production materials belongs to reinforced polymers. One of the most popular reinforced polymer in this sector is produced from aramid fibers and epoxy resin as matrix with hot solidification at temperature 160 пїЅ 170 grad. Celsius. Despite the automated winding technology on modern machinery, there is an accumulation of epoxy resin as a waste happens. This paper is devoted to the processes of curing low-viscosity epoxy resin waste under the influence of orthophosphoric acid (70-75% concentration) and phenol-formaldehyde resin with the addition of biodegradation initiators. For the initiation of biodegradation of xenobiotics, the most affordable, cheap and simple additives were chosen: starch (corn or potato), yeast (simple unicellular microorganisms in nanoscale state), and casein glue of animal origin. Incubation of samples of epoxy resins with the addition of biodegradation initiators in soil medium for 6 months made it possible to detect a significant loss of mass (up to 60%), changes in the material surface and its physicomechanical properties. Microscopic studies have shown the presence of significant growth of microfungi.
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References5
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