Preparation and Mechanical Properties of the Environmentally Friendly Wood-plastic Composites

摘要

Good bonding at the interface between HDPE (High density polyethylene) and wood flour was achieved by adding MA (Maleic anhydride) as surface-reactive additive and WD-50 (3-aminopropyltriethoxysilane) as coupling agent products. HDPE-g-MA was prepared by melt grafting polymerization in the presence of DCP (Dicumyl peroxide) using a Hakke Rheocord. The FTIR spectra conformed that MA was successfully grafted onto HDPE and the effects of DCP and MA contents on grafting reaction were also studied. The effects of silane coupling agent (WD-50), wood flour and HDPE-g-MA contents on the mechanical properties of the HDPE-based wood-plastic composites were investigated by electronic tensile tester and impact test enginery. The results indicated that WD-50 (with the content of 2 wt%) and HDPE-g-MA (with the content of 10 wt%) effectively improved mechanical properties of the composite materials.