| 摘要 |
<p>A planar elongational viscosity measuring method and apparatus which can advance analysis of planar elongational viscosities for high-viscosity and low-viscosity fluids. As a bomb-shell like bob 2 is pushed into a container 6, a non-Newtonian fluid 9 reaches a planar elongation state in a side space G, counterforce F applied to the bomb-shell like bob 2 at this time is measured, planar elongation stress à is calculated using the counterforce F and conditions input by a user based on push-up force, the counterforce F, and the horizontal cross-sectional area of the side space G, and the planar elongation stress is divided by a planar elongation speed µ', thereby acquiring a planar elongational viscosity · PE . Accordingly, it becomes possible to acquire planar elongational viscosities of not only a high-viscosity non-Newtonian fluid, but also a low-viscosity non-Newtonian fluid which is not likely to be solidified, resulting in an advancement of analysis of planar elongational viscosities for high-viscosity and low-viscosity fluids.</p> |
