MATSE 447Rheology and Processing of Polymers

3 credits · Materials Science and Engineering · Penn State

Fluid Mechanics: Stress, strain, tensors, viscosity, modulus, conservation of mass, momentum transfer, Navier-Stokes equations, Reynolds number, creeping flow, Poiseuille flow, Couette flow, dimensional analysis and scaling. Rheology: Linear viscoelasticity, stress relaxation, oscillatory shear, creep and creep recovery, Boltzmann superposition, nonlinear viscoelasticity, steady shear, normal stresses, transient shear flows, rotational rheometers, capillary/slit rheometers, simple nonlinear viscosity models, time-temperature superposition, molecular models, entanglement, crosslinking reactions (gelation), extensional flows. Processing: Extrusion, pumping, mixing, screw design, die design, die swell, injection molding, mold filling, computer-aided mold design, weld lines, compression molding, sheet extrusion, thermoforming, pipe extrusion, blow molding, film blowing, rotational molding, fiber spinning, profile extrusion, coating reaction injection molding.