Effects of extruder parameters and silica on physico-mechanical and foaming properties of PP/wood-fiber composites |
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| Authors: | Zhen-Xiu Zhang Changyun Gao Zhen Xiang Xin Jin Kuk Kim |
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| Affiliation: | 1. Key Laboratory of Rubber–Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber–Plastics, Qingdao University of Science and Technology, Qingdao 266042, China;2. School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701, South Korea;1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China;2. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China;1. Department of Mechanical Engineering, Indian Institute of Technology(Banaras Hindu University), Varanasi 221005, India;2. Department of Mechanical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, Uttar Pradesh 273010, India;1. Key Laboratory of Wooden Materials Science and Engineering of Jilin Province, Beihua University, Jilin 132013, China;2. Liaoning Forestry Vocational-Technical College, Shenyang 110101, China;3. Key Laboratory of Bio-Based Material Science and and Technology of the Ministry of Education, Northeast Forestry University, Harbin 150040, China;1. Fraunhofer Institute for Wood Research (Wilhelm-Klauditz-Institut – WKI), Bienroder Weg 54E, 38108 Braunschweig, Germany;2. IFS – Institute of Joining and Welding, Technische Universität Braunschweig, Langer Kamp 8, 38106 Braunschweig, Germany;2. Université de Toulouse, Ecole des Mines d’Albi, CNRS, Centre RAPSODEE, F-81013 Albi, France |
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| Abstract: | In this study, the effects of screw configuration, screw speed and silica content on the physico-mechanical and foaming properties of PP/wood-fiber (WF) composites were investigated. PP/WF composites were produced by the intermeshing co-rotating twin screw extruder. Microcellular closed cell PP/WF composite foams were prepared using pressure-quench batch process method. Firstly, an attempt has been made to determine the optimum conditions of extrusion that involve screw configurations and screw speed. The mechanical properties and morphology results showed that PP/WF composite prepared under the configuration C at screw speed of 150 rpm have higher mechanical properties, and narrower cell size distribution caused by uniform dispersion of wood fiber. And then, under the optimal processing conditions, the effect of silica content on the physico-mechanical properties of PP/WF composite, the final cell morphology as well as the relative density of the foamed PP/WF/Silica composites is studied. |
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