Research of silicone oil uniformity for butyl rubber stopper and simulation verification

Silicone oil has been recognized as an effective factor for dealing with the butyl rubber stopper demolding. For the problem how to decide reliable injection for butyl rubber stopper, we take on some research on the uniformity of silicone oil, and verify the test according to the finite element simulation. At first, a 3D model of mold is constructed, while the economic cost and reconfigurability are used as the indexes. Then computational fluid dynamics (CFD) simulation is used to establish the function model, which is a powerful and often indispensible tool for modeling airflow and aerosol transport in realistic and complicated airway geometry. After we mesh the model and set the appropriate boundary conditions, better entrance speed of injection is achieved. From this result, it could be suggested that silicone oil could be quantified, and we can evaluate the quality of butyl rubber stopper silicide optimization.