Keyword: «bio-damage»

A protective epoxy-polymer composition has been developed, including a filler, a binder and an accelerator for curing the resin of the binder, with the following ratio of components, masses. %: binder – 81; accelerator – 9, filler – 10. The composition allows to increase resistance of polymer composite materials, in particular basalt-plastic reinforcement to mold fungi in water environment and in soil substrate. The advantage of the composition is that it is easy to perform and economical as it does not require complex technological equipment and expensive components for its implementation, and it also has the ability to increase the material stability in mycological environment, which is promising for protection of composites with mechanical damages from fungal attack.

The resistance of polymer composite materials to external environments including fungi, bacteria and yeasts is a key factor in their reliability. These microorganisms, known as degraders or biodegraders, are capable of causing biological damage and even complete destruction of composite materials by altering their structure and functional characteristics.

The article discusses ways to use the digital speckle photography method to assess the degree of bio-damage to aviation fuel. One of the criteria that can be used as the main parameters of speckle photographs is presented, according to which it is possible to quantify the degree of bio-damage to aviation fuel. The results of an experimental study of the developed method for determining the bio-contamination of an aviation fuel sample with the fungus Hormoconis resinae are obtained.