Glass Testing Machine High-Temperature Glass Parallel Plate Rotational Viscometer PRVM-1500
PRVM-1500
Measurement of the temperature dependence of viscosity changes in glass and phase changes in the liquid phase.
A rotational cylindrical viscometer is used as a measurement method for the low viscosity range of glass. This involves immersing a cylinder into a molten sample and measuring the torque generated by rotating either the inner or outer cylinder to determine the viscosity. In this case, a certain amount of sample is required, and the container for melting it, as well as the furnace for melting, need to be of a corresponding size. For example, when verifying the temperature dependence of glass viscosity, it is preferable to minimize the sample volume and use a heating furnace that responds well to temperature changes. Therefore, this viscometer adopts a parallel plate rotation method that allows viscosity measurement with a small amount of sample and has been designed to keep the heating furnace as compact as possible. "References" Hiroshi Shiraishi et al.: Journal of the Japan Institute of Metals, Vol. 60, No. 2 (1996) 184-194
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basic information
【Features】 ○ This viscometer determines viscosity by measuring the torque applied to one of the parallel plates while rotating one plate with a small sample (approximately 0.5ml) sandwiched between them. ○ The small sample volume results in less temperature error. ○ The measurement operation is simpler compared to the rotating cylinder method. ● For more details, please contact us.
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Applications/Examples of results
Measurement of the temperature dependence of the viscosity change and phase change of glass.
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Under recent high technology, the measurement of viscosity in the glass and ceramics field, which was considered unremarkable, has become a particular focus in fundamental research. Here, I would like to introduce various devices, primarily focusing on viscosity measurement, including glass testing machines, strain testers, electrical conductivity measurement devices, and loss of transparency testing equipment.
