Mechanical strength testing of ethylene-tetrafluoroethylene film
https://doi.org/10.31675/1607-1859-2022-24-4-89-98
Abstract
Mechanical strength testing of ethylene-tetrafluoroethylene (ETFE) film is performed on the test machine INSTRON. The average elastic modulus of the film is 35.8 MPa. Under subsequent loading, the elastic-to-plastic stage transition occurs with decreasing elastic modulus to 1.78–2.71 MPa and then to 0.06–0.086 MPa. Strength testing of the ETFE film 250 µm thick at 8.577 kPa uniformly distributed load does not lead to the film rupture either at positive (15–18 °С) or negative temperatures (–23–29 °С). A multiple damage of the film under an 8.50 kPa load at −26 °С does not lead to its disruption. The film bending at positive and negative temperatures reaches 84 and 58.2 mm, respectively. Strength testing of the ETFE film demonstrates its ultra-high strength properties, and thus predicts its wide use in the formation of comfortable conditions in buildings created in Arctic and other territories of Russia.
Keywords
mechanical strength testing,
polytetrafluorethylene,
ethylene-tetrafluo- roethylene film,
membrane,
elastic modulus
Supporting agencies: The study was commissioned by the Federal State Unitary Enterprise “GNPP “KRONA” on the topic “Search, research and analysis of solutions for load-bearing, enclosing structures and foundations for creating large flight climatic artificial shelters for the conditions of the regions of the Far North and eternal permafrost” and with the financial support of the Ministry of Science and Higher Education of the Russian Federation for project FEMN-2020-0003
About the Authors
S. N. Ovsyannikov
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Sergei N. Ovsyannikov, DSc, Professor
634003
2, Solyanaya Sq.
Tomsk
V. N. Okolichnyi
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Vasilii N. Okolichnyi, PhD, A/Professor
634003
2, Solyanaya Sq.
Tomsk
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Review
For citations:
Ovsyannikov S.N., Okolichnyi V.N. Mechanical strength testing of ethylene-tetrafluoroethylene film. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2022;24(4):89-98. (In Russ.) https://doi.org/10.31675/1607-1859-2022-24-4-89-98
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