a) (2p) Describe simple tests one may use to identify PS and PVC polymers respectively. b) (3p) Show with a figure the shear stress as a function of shear velocity for a dilatant, Newtonian and a pseudoplastic melt? Explain the behaviour of the pseudoplastic fluid. O (4p) Give two examples of production methods, besides extrusion of profiles, where an extruder is used. Illustrate the methods with simple figures and mention some products produced with the methods. d) (3p) In injection moulding; what does thin gates result in concerning shear rate and why can this be advantageous from a mould filling perspective? Incorporate the consequences of molecular features of the polymer melt in your answer. e) (3p) Mention two advantages with the use of thermoplastic as matrix in fibre reinforced composites. Explain why, despite these advantages, the majority of high performance fibre composites are actually made using thermosetting resin as matrix material? f) (4p) Explain the main steps involved in the manufacturing of SMC (Sheet Moulding Compound) composites (from constituents to final components). Give an example of SMC-products.