Evaluation of Rheological Properties of Polytetrafluoroethylene/Isoparaffin

The effect of isoparaffin on the rheological properties of polytetrafluoroethylene (PTFE) was investigated. PTFE/isoparaffin paste was prepared for two different types of isoparaffin, that is, Isopars G and M, which can be used as PTFE lubricants. Molecular dynamics (MD) simulations were applied to investigate the effect of the lubricants on the zero-shear viscosity of the PTFE/isoparaffin system. The Green-Kubo relationship was used to obtain the zero-shear viscosity through the MD simulations. In the relationship, the autocorrelation function of the shear stress was calculated and integrated over time. The shear viscosity of PTFE/Isopar G was lower than that of PTFE/Isopar M, corresponding to the experimental results.

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Evaluation of Rheological Properties of Polytetrafluoroethylene/Isoparaffin

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