关键词: 沙柳木粉, 抗氧剂, 废旧PE-HD, 木塑复合材料, 性能

Abstract: Woodplastic composites (WPC) were prepared by compression molding of waste high-density polyethylene (PE-HD) with salix wood powders, and effects of wood powders and antioxidant on properties of WPS were investigated. The results indicated that, when the loading of salix wood powder was in the range of 0~70 wt %, the static bending intensity of WPC presented an increase at first and then tended to decrease, and so did the elasticity modulus and tensile strength. The salix wood powders reduced the thermal stability of WPC and led to a decrease in their initial decomposition temperatures. The presence of salix wood powders also resulted in an increase in storage and loss moduli of WPC but a decrease in their loss factors. Moreover, there was a shift of loss factor peak to a higher temperature for WPC. On the other hand, with addition of Antioxidant 1010 in the content range of 0~0.5 wt %, the static bending intensity, elasticity modulus and tensile strength of WPC also tended to increase at first and decrease afterwards. The storage and loss moduli of WPC exhibited relatively high values when 0.2 wt % and 0.3 wt % of Antioxidant 1010 was incorporated.

Key words: salix wood powder, antioxidant, waste high-density polyethylene, wood-plastic composite, property