Study on the Properties of UHMW-PE Film

Abstract

Some physicochemical properties of UHMW-PE film such as gas permeability, tensile strength, and corrosion resistance in acid with different immersion time, various concentrations and various solutions and rattler testing were studied. The obtained results showed that the values of gas permeability, tensile strength, elongation at break, and the temperature of dissociation at weight loss 5% was 546.57 cm 3 •m −2 •24 h•0.1 MPa, 37.22 MPa, 368.00%, 360˚C, respectively. In different concentration acid, the surface resistance of film accumulated to some extent with immersion time increasing, together with that the higher acid concentration was, the lower the surface resistance of film was. Moreover, the contact angle of films gradually increased with the acid concentration decreasing and the increase of immersion time. After wear testing, the mass of UHMW-PE film did not nearly change, while the contact angle became larger with the number of turning increasing and the value was more than 90˚.

Physical aspects of CMAS particle dynamics and deposition in turboshaft engines

“…The model constants used are C ST for liquid-liquid interactions and C LS for liquid-solid interactions (see Section "Computational methods" for definition). The framework is evaluated by comparison with the sessile drop experiment conducted [28] at ambient conditions. These experiments were selected because the properties of the materials used are wellunderstood and reliable steady-state contact angle measurements are provided.…”

“…(a) Sweep of the steady-state solution of sessile water droplet on a polymer surface modeled and compared with experiment by Du et al[28] (square) and (b) SPH steady simulation and comparison with experiment with C ST = 15.5 and C LS = 9.3.…”