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Materials 2015, 8(12), 8510-8523;

Effect of Hybrid Talc-Basalt Fillers in the Shell Layer on Thermal and Mechanical Performance of Co-Extruded Wood Plastic Composites

College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
School of Energy Systems, Lappeenranta University of Technology, FI-53851 Lappeenranta, Finland
Department of Forest Products, Korea Forest Research Institute, Seoul 130-712, Korea
Author to whom correspondence should be addressed.
Academic Editor: Kim L. Pickering
Received: 2 October 2015 / Revised: 29 November 2015 / Accepted: 1 December 2015 / Published: 8 December 2015
(This article belongs to the Special Issue Bio- and Natural-Fiber Composites)
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Hybrid basalt fiber (BF) and Talc filled high density polyethylene (HDPE) and co-extruded wood-plastic composites (WPCs) with different BF/Talc/HDPE composition levels in the shell were prepared and their mechanical, morphological and thermal properties were characterized. Incorporating BFs into the HDPE-Talc composite substantially enhanced the thermal expansion property, flexural, tensile and dynamic modulus without causing a significant decrease in the tensile and impact strength of the composites. Strain energy estimation suggested positive and better interfacial interactions of HDPE with BFs than that with talc. The co-extruded structure design improved the mechanical properties of WPC due to the protective shell layer. The composite flexural and impact strength properties increased, and the thermal expansion decreased as BF content increased in the hybrid BF/Talc filled shells. The cone calorimetry data demonstrated that flame resistance of co-extruded WPCs was improved with the use of combined fillers in the shell layer, especially with increased loading of BFs. The combined shell filler system with BFs and Talc could offer a balance between cost and performance for co-extruded WPCs. View Full-Text
Keywords: composite; wood; thermoplastics; properties; analytical modeling; co-extrusion composite; wood; thermoplastics; properties; analytical modeling; co-extrusion

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Huang, R.; Mei, C.; Xu, X.; Kärki, T.; Lee, S.; Wu, Q. Effect of Hybrid Talc-Basalt Fillers in the Shell Layer on Thermal and Mechanical Performance of Co-Extruded Wood Plastic Composites. Materials 2015, 8, 8510-8523.

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