TY  - JOUR
AB  - Purpose The purpose of this article is to discuss the tribological behavior of polytetrafluoroethylene (PTFE) and property changes imposed by wear tests.Design/methodology/approach Long-duration dry wear tests were carried out in a sliding bearing on shaft tribometer. Differential Scanning Calorimetry (DSC) and Fourier Transformed Infrared Spectroscopy (FTIR) analyses were performed in the PTFE in its original condition and after the tests.Findings The wear products merged in multilayer films and were expelled out of the test sequence. Through DSC and FTIR analyses in the polymeric material, before and after tests, it was possible to verify an increase of the crystallinity degree of PTFE, as well as absence of crystalline fusion of the material. The wear products presented changes in the infrared spectra, which suggests the occurrence of some bonds of hydrogen and oxygen.Originality/value It was verified on correlation that fibril mechanism, which occurred during PTFE wear, and its crystallinity degree increase. Also, analysis of PTFE wear products showed CO and CH bonds, which were imposed by wear test.
VL  - 69
IS  - 4
SN  - 0036-8792
DO  - 10.1108/ILT-04-2016-0081
UR  - https://doi.org/10.1108/ILT-04-2016-0081
AU  - do Vale Joao Luiz
AU  - da Silva Carlos Henrique
AU  - da Silva Cruz Carlos M.G.
PY  - 2017
Y1  - 2017/01/01
TI  - Assessment of tribological behavior and physicochemical properties alterations of polytetrafluoroethylene imposed by wear test
T2  - Industrial Lubrication and Tribology
PB  - Emerald Publishing Limited
SP  - 550
EP  - 558
Y2  - 2024/04/19
ER  -