| 초록 |
Slot-die coating process is a pre-metered process and is used for battery or solar cell manufacturing processes. The coating solution was considered to be a Newtonian fluid because large quantities of solvent were used. Recently, however, the coating solution is no longer a Newtonian but a complex fluid because of the reduction of solvent due to environmental issues and the addition of micro/nanoparticles. Therefore, it is needed to analyze the coating flow considering rheological properties such as yield stress. There are a few studies which show the effects of rheological properties to the process conditions, like the pressure jump augmentation at the free surface in yield stress fluids. We selected the carbopol 941 solutions as the model fluid to verify the previous studies experimentally. And the rheological properties of the model fluid were measured by a rotational rheometer. Through these measured values, the previous researches were verified. |
