The effect of processing conditions on the mechanical properties of polyethylene produced by selective laser sintering |
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| Institution: | 1. State Key Laboratory of Solidification Processing Northwestern Polytechnical University, Xi′an, Shaanxi 710072, China;2. State Key Lab of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, China;3. Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore 638075, Singapore;1. Rapid Technologies Center, BMW Group, Knorrstr. 147, 80788 Munich, Germany;2. Additive Manufacturing and 3D Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK;3. Institute of Medical and Polymer Engineering, Technische Universität München, Boltzmannstraße 15, 85748 Garching, Germany;1. Singapore Institute of Manufacturing Technology, 73 Nanyang Drive, 637662, Singapore;2. Department of Mechanical and Energy Engineering, South University of Science and Technology of China, No. 1088, Xueyuan Road, Shenzhen, Guangdong, 518055, China;1. Singapore Institute of Manufacturing Technology, A*STAR, 73 Nanyang Drive, 637662, Singapore;2. Department of Materials Science and Engineering, National University of Singapore, 117576, Singapore;1. Institute of Polymer Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Germany;2. Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Germany;1. University of Duisburg-Essen, Chair for Manufacturing Technology, Lotharstraße 1, 47057 Duisburg, Germany;2. AM Polymer Research UG, Bismarckstraße 120, 47057 Duisburg, Germany |
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| Abstract: | A study was performed to explore the feasibility of processing a polyethylene by selective laser sintering. The polyethylene powder was characterised by scanning electron microscopy, particle size analysis and differential scanning calorimetry. The laser sintering processing conditions, especially powder bed temperature, laser power and laser scan counts, were studied. Well defined tensile testing specimens of the polyethylene were produced successfully by double laser scanning. The effect of the thermal history during the laser sintering process on the mechanical properties of the laser sintered parts is discussed for the first time. |
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| Keywords: | Selective laser sintering Processing conditions Mechanical properties |
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