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Fiberglass reinforced plastics based on fillers recovered in pyridine under normal pressure
https://doi.org/10.22349/1994-6716-2025-122-2-119-129
Abstract
The article presents the results of a study on the recycling of polymer composite materials (PCMs) based on reactive matrices using solvolysis. Epoxy and epoxy vinyl ester resins were used as the matrix material, which were cured at room temperature. To optimize the selection of the solvolysis medium, the solubility parameter of the matrix component was calculated using the method of A. Askadsky. This method has been shown to be effective in selecting solvents for polymer matrices destruction. Based on experimental studies, pyridine was found to be the best solvent out of those considered. Its use reduced the time of the solvolysis process to 1 hour at boiling point (115°C). The resulting fibers had a residual content of 20% of the original polymer matrix. The strength of these recovered fibers was found to be up to 91% of their initial strength. However, composites made from these reconstituted fibers showed a 29.7% reduction in bending strength compared to the original compo sites. Despite this, the recovered fibers can be used to create non-essential, low-weight products. The study confirms the potential of using nitrogen-based solvents for recycling polymer composites.
Keywords
polymer composites,
epoxies,
vinyl ethers,
recycling,
solvolysis,
alcoholysis,
strength,
thermal analysis,
catalysis
Supporting agencies: The study was financially supported by the Russian Science Foundation within the framework of the scientific project No 23-79-01137, https://rscf.ru/project/23-79-01137/
About the Authors
A. E. Protsenko
Komsomolsk-na-Amure State University
Russian Federation
Russian Federation
Cand Sc. (Eng)
27 Lenin St, 681013, Komsomolsk-on-Amur
I. A. Lyukho
Komsomolsk-na-Amure State University
Russian Federation
Russian Federation
27 Lenin St, 681013, Komsomolsk-on-Amur
A. S. Kholodov
Komsomolsk-na-Amure State University
Russian Federation
Russian Federation
27 Lenin St, 681013, Komsomolsk-on-Amur
V. V. Petrov
Komsomolsk-na-Amure State University
Russian Federation
Russian Federation
Dr Sc. (Eng)
27 Lenin St, 681013, Komsomolsk-on-Amur
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Review
For citations:
Protsenko A.E., Lyukho I.A., Kholodov A.S., Petrov V.V. Fiberglass reinforced plastics based on fillers recovered in pyridine under normal pressure. Voprosy Materialovedeniya. 2025;(2(122)):119-129. (In Russ.) https://doi.org/10.22349/1994-6716-2025-122-2-119-129
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