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Preparation, Study, and Use of Composites Based on Fluoropolymer Waste

  • Inorganic Synthesis and Industrial Inorganic Chemistry
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Abstract

A procedure was developed for reprocessing polytetrafluoroethylene waste with the aim of its reuse in production of polymer composite materials. Polytetrafluoroethylene waste was mechanically treated on a specially designed and fabricated installation. The grinding rate and parameters of the cyclone for separating the <10 μm fraction were found using the Bernoulli equation for open ventilation systems and the Stokes formula. The possibility of using polytetrafluoroethylene waste reprocessing products for preparing composite materials based on polyfluoroolefins was considered. The deformation and strength characteristics of the polymer composites obtained (σt = 17.6–23.8 MPa, εb = 400.0–415.3%) show that, in production of bulk composites, commercial polytetrafluoroethylene can be partially (to up to 30 wt %, irrespective of the size of the pulverized waste particles) replaced by its waste. In a combined sheet metal–Teflon material, the waste amount can reach 50–60 wt % relative to the polymer amount in the composite.

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ACKNOWLEDGMENTS

The authors are grateful to Cand. Sci. (Chem.) R.V. Kurbatov (Laboratory of Oxide Systems, Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences) for performing X-ray diffraction measurements. The study was performed using the equipment of the Center for Shared Use of the Baikal Institute of Nature Management of Siberian Branch of Russian Academy of Science.

Funding

The study was performed within the framework of the government assignment for the Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences (project no. 0273-2021-0007).

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Authors and Affiliations

  1. Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, 670047, Buryatia, Russia

    V. N. Kornopol’tsev, O. Zh. Ayurova, M. S. Dashitsyrenova, O. V. Il’ina & D. M. Mognonov

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  1. V. N. Kornopol’tsev
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  2. O. Zh. Ayurova
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  3. M. S. Dashitsyrenova
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  4. O. V. Il’ina
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  5. D. M. Mognonov
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Contributions

V.N. Kornopol’tsev: collection of literature data, development of the experimental procedure, assembling of the installation for utilization of polytetrafluoroethylene waste, and tribological tests; O.Zh. Ayurova: collection of literature data, manuscript preparation, and IR spectroscopic studies of the samples; M.S. Dashitsyrenova: study of deformation and strength properties of the samples; O.V. Il’ina: study of thermal properties of the samples; D.M. Mognonov: analysis and interpretation of the results.

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Correspondence to O. V. Il’ina.

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The authors declare that they have no conflict of interest.

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Translated from Zhurnal Prikladnoi Khimii, No. 7, pp. 818–823, January, 2021 https://doi.org/10.31857/S004446182107001X

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Kornopol’tsev, V.N., Ayurova, O.Z., Dashitsyrenova, M.S. et al. Preparation, Study, and Use of Composites Based on Fluoropolymer Waste. Russ J Appl Chem 94, 873–878 (2021). https://doi.org/10.1134/S1070427221070028

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  • DOI: https://doi.org/10.1134/S1070427221070028

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