文章基本信息

标题：Impact of Intensive Mixing and Shearing Elements on the Effectiveness of Extrusion of Wood Polypropylene Composites
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作者：Karolina Głogowska ; Karolina Głogowska ; Janusz W.Sikora 等
期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2021
卷号：15
期号：4
页码：231-242
DOI：10.12913/22998624/142501
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：The objective of this study was to determine the eff ect of various design solutions for intensive mixing and shearing elements located at the end of a single-screw plasticizing system on the eff ectiveness of wood polypropylene composite extrusion. Four types of such elements were used in the study: a pineapple mixer, a Maddock mixer, a ring mixer, and a helical mixer. For the purpose of the study, four blends were prepared containing 5, 10, 15 and 20% of wood fi bre, respectively. Direct and indirect resulting factors as well as variable, constant and disturbing factors were investigated. The eff ectiveness of extrusion of wood polypropylene composites was determined based on results of parameters characterizing this process, such as extrudate temperature, unit consumption of energy supplied to the extruder, mass fl ow rate, and extrusion speed. It has been shown that the eff ectiveness of the extrusion process can be improved by using diff erent mixing and shearing elements. Such screw design solutions make it possible to aff ect rheological phenomena occurring during melt fl ow in the plasticizing system, without modifying the extrusion process parameters such as screw rotation speed and polymer temperature. The literature review shows that there exist very few and general studies investigating the eff ect of screw design geometry, especially that of mixing and shearing elements, on the effi ciency of extruding and mixing wood polypropylene materials.
关键词：single-screw extrusion;shearing elements;mixing elements;process eff ectiveness;wood polypropylene composite