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http://dx.doi.org/10.7844/kirr.2015.24.2.36

Effects of Ultrasonic Treatment and Particle Size on Mechanical Properties of Waste Polypropylene/WGRT Composites  

Kim, Donghak (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Kim, Seonggil (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Lee, Minji (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Park, Jong-Moon (School of Materials Science and Engineering, Kumoh National Institute of Technology)
Oh, Myung-Hoon (School of Materials Science and Engineering, Kumoh National Institute of Technology)
Kim, Bong-Suk (Thinker route Co., LTD.)
Kim, Jinkuk (Department of Materials Engineering and Convergence Technology, Gyeongsang National University)
Bang, Daesuk (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Publication Information
Resources Recycling / v.24, no.2, 2015 , pp. 36-45 More about this Journal
Abstract
In this study, various sizes of waste ground rubber tire (WGRT) were devulcanized by a single screw extruder equipped with a sonicator in front of the die, and waste PP and devulcanized waste ground rubber tire (DWGRT) composites were prepared by an intermeshing co-rotating twin screw extruder. The crosslink density and percent devulcanization of WGRT and DWGRT for 40, 80 and 140 meshes were calculated. The mechanical properties of the composites were compared with each other. The effect of SEBS-g-MA as a compatibilizer was investigated on mechanical properties of both waste PP/WGRT and waste PP/DWGRT composites. The crosslink density was decreased with decreasing the WGRT size. On the other hand, the percent devulcanization was increased by adding the smaller size of WGRT. Also, tensile strength, impact strength and elongation at break of the composite with DWGRT were higher than those with WGRT. Especially, mechanical properties of the composites were significantly increased by adding the smaller size of WGRT and DWGRT. Addition of SEBS-g-MA into both waste PP/(D)WGRT composites exhibited better impact strength and elongation at break than the composites themselves.
Keywords
ultrasonic treatment; devulcanization; waste PP; waste ground rubber tire (WGRT); compatibilizer;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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