The purpose of this work is to compare experimental measurements of spiral mold flow with results obtained by numerical simulation. To this end the reaction kinetics of the system were determined, as well as its rheological behavior. The spiral flow in this work was modelled as a flow through a straight cylindrical tube, i.e. the change in flow direction due to the spiral was assumed to be unimportant in the momentum balance. The cross-section of the spiral mold has a semi-circular shape with a diameter of 0.3125 cm. It is shown that as the temperature is increased, the initial viscosity decreases, and a higher initial flow rate is achieved. This higher flow rate causes the material to flow further before gelling. However, as the temperature increases, the reaction rate also increases, leading to an earlier gelation. Eventually the flow length is expected to decrease due to a very fast gelation as the temperature is increased, but this behavior was not observed within a practical temperature range.
|Original language||English (US)|
|Number of pages||4|
|Journal||Annual Technical Conference - Society of Plastics Engineers|
|State||Published - Dec 1 1989|
|Event||ANTEC 89 - 47th Annual Technical Conference of SPE - New York, NY, USA|
Duration: May 1 1989 → May 4 1989