UV老化后氧化铁颜料着色木纤维-HDPE复合材料的性能变化(英文).pdf

Journal of Forestry Research (2010) 21(1): 59–62 DOI 10.1007/s11676-010-0009-z SHORT COMMUNICATION Property changes of wood-fiber/HDPE composites colored by iron oxide pigments after accelerated UV weathering ZHANG Zheng-ming • Du Hua • WANG Wei-hong • WANG Qing-wen Received: 2009-05-30; Accepted: 2009-06-22 © Northeast Forestry University and Springer-Verlag Berlin Heidelberg 2010 Abstract: Four kinds of iron oxide pigments were added into decade (Markarian 2005). The environmental friendly, uniquely wood-fiber/high-density-polyethylene composites (WF/HDPE) at three aesthetic and low maintenance characteristics of WPC are driv- different concentrations, to determine the effects of pigments on the ing the fast growth in wood replacement applications. changes in the color and mechanical properties of the composites before The global wood thermoplastic composite market was 771 and after UV accelerated weathering. HDPE, wood fibers, pigments and million kilogram in 2003 ，85% of which was shared by North other processing additives were dry-mixed in a high-speed mixer. The America. It is predicted that its local market will continue to mixtures were extruded by two-step extrusion process with a experience double-digit growth from 2003 to 2010 (Clemons self-designed twin-screw/single-screw extruder system. Color of the 2002; Markarian 2005; Ashori 2008). Although WPC was pro- * * * moted as a low-maintenance and high-durability product, its samples was determined according to CIE 1976 L a b system by a spec- trophotometer and the bending properties were tested to evaluate the durability has been a concern. It was