TY - JOUR
T1 - Spiral flow modelling of a filled epoxy-novolac molding compound
AU - Hale, A.
AU - Garcia, M.
AU - Macosko, C. W.
AU - Manzione, L. T.
PY - 1989/12/1
Y1 - 1989/12/1
N2 - 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.
AB - 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.
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M3 - Conference article
AN - SCOPUS:0024867813
SN - 0733-4192
SP - 796
EP - 799
JO - Annual Technical Conference - Society of Plastics Engineers
JF - Annual Technical Conference - Society of Plastics Engineers
T2 - ANTEC 89 - 47th Annual Technical Conference of SPE
Y2 - 1 May 1989 through 4 May 1989
ER -