Journal of Siberian Federal University. Engineering & Technologies / Improvement of Pressing Technology of Products from Polytetrafluoroethylene

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2021 14 (5)
Authors
Negrov, Dmitriy A.; Putintsev, Vitaly Yu.
Contact information
Negrov, Dmitriy A.: Omsk State Technical University Omsk, Russian Federation; Putintsev, Vitaly Yu.: Omsk State Technical University Omsk, Russian Federation;
Keywords
PTFE; ultrasonic action; low frequency modulation; intensity of the mass wear rate
Abstract

The development of new methods for obtaining materials with predetermined operational properties that ensure the durability and the wear resistance of friction units is an urgent problem in modern material science. The article considers the effect of ultrasonic pressing modes with simultaneously superimposed low-frequency amplitude modulation on the mechanical and tribotechnical properties of polytetrafluoroethylene. The comparison of the obtained research results of the new technology is carried out with the traditional pressing technology. The results of studies indicated that the technology of ultrasonic pressing with the simultaneous application of low-frequency amplitude modulation makes it possible to increase the mechanical properties of PTFE: the tensile strength by 15 %, elongation by 13 %, the elastic modulus by 8 %, the hardness by 12 %, while the intensity of the mass wear rate is reduced by 40 %, and the coefficient of friction by 27 %

Pages
564–571
DOI
10.17516/1999-494X-0333
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/143414

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