Recycling of Fiberglass Fillers Obtained from Polymer Composites Based on an Epoxy Vinyl Ester Binder

Protsenko, Alexander E.; Петров, В. В.

doi:10.1007/s11029-022-10048-9

Cited by 9 publications

(7 citation statements)

References 19 publications

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“…Concentrations of 2, 5 and 10% were considered. Similar to the analysis data on caustic soda concentration impact on fiber strength properties in a regenerated filler in [12], strength considerably reduces at 10% of NaOH and solvolysis duration increases with 2% catalyst content in methyldiethanolamine medium. Further research was carried out when 5% caustic soda was added to the reaction medium.…”

Section: Resultssupporting

confidence: 74%

“…This fact is also confirmed by the presence of large porous particles agglomerations on fiber surfaces on sample microstructure photographs (figure 3). Thus, based on the conducted studies, a conclusion can be made that notwithstanding the fact that this solvent is less selective that those considered before [12], the residual strength of regenerated fibers largely depends on the conditions and duration of treatment. So, the fibers produced from fiberglass plastic based on epoxy matrix SR8100/SD8824 have the highest strength among the considered ones, after 3 hours from the beginning of solvolysis.…”

Section: Resultsmentioning

confidence: 99%

“…Paper [12] presents the results of recycling of glass fibers from polymer composites based on an epoxy vinyl ester binder. Methyldiethanolamine was used as a solvolysis medium.…”

Section: Introductionmentioning

confidence: 99%

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Recycling of the polymer composite fillers in amino alcohol medium

Protsenko

Петров²

2022

J. Phys.: Conf. Ser.

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The paper presents data from an experimental study of the possibility of recycling polymer composites on the example of fiberglass and different thermoset binders. The goal is to remove the polymer matrix and obtain recovered fiberglass that is not inferior in properties to the virgin material. In this paper, considered the solvolysis method of the composite in the amino alcohols. As the medium used methyldiethanolamine and 3-aminopropanol-1. The dependence of the influence of the solvolysis time and the concentration of alkali metal hydroxide in the reaction medium on the strength of recovered glass fibers has been established. The solvolysis at a temperature of 180 °C and a catalyst concentration of 5 % for 6 hours was accepted as optimal regime. As a result of the research, a regime was obtained that allows recovering fibers with a tensile strength of 92 % of virgin fibers. The recovered fabrics were studied by thermal analysis and scanning electron microscopy. GFRP samples were obtained from the recovered fabrics by the VaRTM method. The flexural strength of composites made from secondary filler is 8.5% lower than the same material based on virgin fabric. Products of the polymer matrix degradation and fibrous fillers are released during recycling. These products could be used in chemical technology to produce, for example, binders components and secondary fillers for polymer composites.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

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Recycling of the polymer composite fillers in amino alcohol medium

Protsenko

Петров²

2022

J. Phys.: Conf. Ser.

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“…The search and development of systems capable of operating efficiently at relatively low process parameters is an essential task. The use of catalysts is one of the most effective solutions to increase the efficiency of the process [ 8 , 32 , 33 , 34 , 35 ]. There is evidence of the efficient use of alkali metal compounds as catalysts for the destruction of thermosetting matrices of polymer composites.…”

Section: Introductionmentioning

confidence: 99%

“…In this case, subcritical water as a solvent, 1-propanol as a co-solvent and KOH as a catalyst. NaOH is also used as a catalyst for the solvolysis of epoxy–vinylester matrix fiberglass reinforced in methyldiethanolamine and 3-aminopropanol [ 34 , 35 ]. A method is also known from [ 37 ], in which decomposition with nitric acid was employed to recover carbon fiber from carbon fiber reinforced plastic prepreg.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Epoxy/Fiberglass Composite Using Supercritical Ethanol with (2,3,5-Triphenyltetrazolium)2[CuCl4] Complex

Protsenko¹,

Protsenko²,

Shakirova³

et al. 2023

Polymers

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The widespread use of polymer composite materials (PCM) leads to an increase in non-recyclable waste. This paper discusses the feasibility of recycling fiberglass with an epoxy matrix by solvolysis in ethanol under supercritical conditions. The solvolysis process completes successfully within four hours in an environment of a pure solvent containing 10% water at a temperature of 280 °C when the solvent passes into the supercritical state. The treatment time increases up to 10 h at a process temperature of 250 °C. When using a coordination compound of copper(II) chloride with organic chloride salt having 2,3,5-triphenyltetrazolium as the counterion, having the composition of (2,3,5-triphenyltetrazolium)2[CuCl4], the treatment time is reduced. The addition of the complex of 5% by weight makes it possible to completely remove the epoxy matrix at a temperature of 250 °C for two hours. The products separated from the solvolysis liquid were studied by infrared spectroscopy. The resulting fibers were examined by thermogravimetric analysis and scanning electron microscopy. The residual strength of the recovered fibers is 98%. Thus, the resulting fibers can be reused in the composite industry. Including both for the production of decorative products and for the production of structural products made of polymer composite materials.

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Ein Überblick zum Recycling und zur Verwertung glasfaserverstärkter Kunststoffe

Milek,

Fuhrmann

2024

Chemie Ingenieur Technik

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ZusammenfassungFaserverbundmaterialien sind Schlüsselkomponenten in Zukunftstechnologien. Daraus resultiert eine stark ansteigende Nachfrage und es sind steigende Abfallmengen zu erwarten. Das Faserverbundmaterialrecycling ist seit einigen Jahren ein intensiv erforschtes Themengebiet. Den größten Anteil bilden mit 95 Gew.‐% glasfaserverstärkte Kunststoffe. In diesem Übersichtsartikel liegt der Fokus auf der Wiederverwertung glasfaserverstärkter Kunststoffe. Deren Effektivität und Anwendbarkeit werden beurteilt und der aktuelle Stand der Forschung wird zusammengefasst.

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Recycling of Fiberglass Fillers Obtained from Polymer Composites Based on an Epoxy Vinyl Ester Binder

Cited by 9 publications

References 19 publications

Recycling of the polymer composite fillers in amino alcohol medium

Recycling of the polymer composite fillers in amino alcohol medium

Recycling of Epoxy/Fiberglass Composite Using Supercritical Ethanol with (2,3,5-Triphenyltetrazolium)2[CuCl4] Complex

Ein Überblick zum Recycling und zur Verwertung glasfaserverstärkter Kunststoffe

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