How Pressure Affects the Dynamic Viscosities of Two Poly(propylene glycol) Dimethyl Ether Lubricants

摘要: The dynamic viscosity of two poly(propylene oxide) dimethyl ethers with average molecular weights higher than 1.3 kg·mol−1 are the object study in this work. experimental measurements have been performed a rotational automated viscometer and high-pressure rolling-ball up to 60 MPa at five temperatures ranging from (303.15 373.15) K. We present other physical properties that affect lubrication, such as index, pressure−viscosity coefficient, temperature−viscosity coefficient. Several Vogel−Fulcher−Tammann (VFT) type equations were used fit values pressure temperature. data also fitted function temperature volume thermodynamic scaling model Roland et al.