The British Plastics Federation

(i) The British Plastics Federation (BPF) is the world’s longest running plastics trade association, established in 1933 to represent the UK industry. BSF want to support the education institution along with the industrial partner to support the setting up the polymer laboratory in the universities. In the process of setting up the injection moulding machine in UCLAN a trial experiment was conducted on the thermosetting plastics. A force, F will inject a given weight of an epoxy thermosetting polymer into intricate mould of the injection moulding machine in two different time and temperature scale, i.e., 30 s at 180 degrees Celsius and in 85 s at 162 degrees Celsius. If the viscosity of the epoxy thermosetting polymer follows an Arrhenius law of diffusion, with a rate of process proportional to???? 2 s-1,exp ? m????????calculate how long the process will take at 237 degrees Celsius.(6 marks)(ii) Discuss the possible behaviour of this material in relation to creep and compare it with the possible behaviour of a thermoplastic taking into consideration the main polymer structure characteristic of both. Compare the equation to model the injection with the equation to model creep.