Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
The main goal of this study was to increase recycling of plastics from the end of life vehicles (ELV) and investigate the possibility of using the material in new vehicles. In the study the current recycling situation, mainly in European car companies, has been described and proper solution to overcome some common obstacles in the ELV recycling has been suggested.
The study consists of two parts. The first part consists of analysing recycling of the ELV and finding solution for better use of recycled plastics in the vehicles .The work has been done by recovering information from different sources, doing survey from several car companies and among plastics recycling industries, mainly in Europe.
Statistics from the different car industries such as, Volvo, Renault, Mercedes Benz and Ford, illustrate that about 75 to 85% of scarp car is recycled, of which 10% plastic. In addition, on average about 50 kg recycled plastic (around 50 parts) is used in the different car models. The recyclates from post-industrial and post-consumer wastes are used in different vehicle parts, such as wheelhouse liner, under-floor panel, carpet, engine cover, sound proofing, bumper and so on.
The second part of the project is devoted to laboratory work, focusing on finding a possibility of recycling scarp bumpers without removing paint for production of a new bumper or other parts like brackets and back plates.
The bumpers were selected from three Swedish car models SAAB 9-3, Volvo XC 70 and Volvo S80. During the study several tests have been performed in order to analyze the recyclates and their qualities, such as Fourier Transform Infrared Spectroscopy (FTIR), Tensile test, Differential Scanning Calorimetry (DSC), and determination of the melt flow rate (MFR). In addition two aspects of polymer ageing have been studied: thermal degradation and oxidation. The ageing has been performed at 90°C for 1000 hours.
The experiments indicated that the products did not fulfill the quality requirements for production of a new bumper, with somewhat poorer mechanical properties. However, blending the recyclates with virgin materials may improve the overall properties and allow using the recyclates for production of a new bumper or in other parts of vehicles.
2011. , 56 p.