Polymer Extrusion

Plastics extrusion is one of the most important industrial processes worldwide. Over past decades, understanding of extrusion technologies has advanced by the global research efforts, but, due to the fact that the metal barrel hinders direct visualizations to be made by the naked eye, the true dynamic processing characteristics of extrusion processes remain unclear. Analytical attempts have thus been carried out either by indirect, static empirical approaches or theoretical mathematical analyses. None of them offer a realistic depiction of what takes place inside the barrel during an extrusion process. As such, the barrel can be considered as a black-box. This book reveals the true dynamic extrusion processing characteristics, accumulated from years of research experience based on the novel visualization technique developed by Professor Zhu of the Beijing University of Chemical Technology. The qualitative discussions within provide not only insight into the scientific aspects of the subject, but also information of practical significance for those in the industry who need to perform process and hardware designs and optimizations. Included are conventional mathematical representations of the single- and twin-screw extrusion technologies. This provides a comprehensive foundation for undergraduate courses in, e.g., plastics processing engineering. Other topics covered are specifically selected to provide a comprehensive technical and market-trend background to readers at all levels. The current status and future potential of sustainable and biodegradable polymers are also emphasized.

Autorentext
Dr. Anthony (Chi Ying) Wong is Market Coordinator - Asia Pacific at Badger Color Concentrates. He has over 35 years of experience in both industry and academia in the area of plastics and manufacturing, including postions at BASF, Exxon Chemical, and the University of Hong Kong. He holds a Ph.D. from the University of Bradford, UK.

Leseprobe
1 Introduction 2 Polymers, Markets, Applications, and Additives 3 Rheology of Molten Polymers 4 Powder Technology in Plastics Processing 5 Brief Historical Development of Plastics Extrusion 6 Single-Screw Extrusion 7 Dynamic Processing Characteristics of Co-Rotating Twin-Screw Extrusion by Visualization 8 Concluding Remarks