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

Materials

Runzhou Huang¹  Changtong Mei¹  Xinwu Xu¹  Timo Kärki³  Sunyoung Lee²  Qinglin Wu¹ 

[1] College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;Department of Forest Products, Korea Forest Research Institute, Seoul 130-712, Korea;School of Energy Systems, Lappeenranta University of Technology, FI-53851 Lappeenranta, Finland;

关键词: composite;    wood;    thermoplastics;    properties;    analytical modeling;    co-extrusion;   

DOI  :  10.3390/ma8125473

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.