DEVICE FOR MEASUREMENT OF SURFACE TENSION, VISCOSITY AND DENSITY OF HIGH TEMPERATURE MELTS

摘要

An original device for surface tension (σ), kinematic viscosity (ν) and density (ρ) measurements of high temperature melts is described. Sessile drop method is used for σ and ρ determination. For viscosity investigations, the damping torsion oscillation method is realized. A personal computer operates the experiment, fixes initial information, calculates the melt properties and fits the results in property-temperature graphs. The algorithms of the computer activity are also described.