Effect of Coffee Husk Powder on Weather Resistance of Wood Plastic Composites
Coffee Husk powder(CHP)was utilized in place of wood powder to enhance the anti-aging properties of high-density polyethylene(HDPE)in the production of wood plastic composites(WPCs)using a two-step melt blending method.The weathering resistance of the WPCs was evaluated following exposure to xenon lamp aging for 2000 hours.Various aspects of the anti-aging properties of the WPCs were analyzed using infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),surface color assessment,mechanical testing,thermal stability examination,and microstructural analysis via scanning electron microscopy(SEM).The findings indicate that prolonged aging for 2000 hours accelerates the degradation rate of the high CHP mixture samples(HCHP/HDPE),rendering it more susceptible to fading and cracking.In contrast,the lowCHP mixture samples(LCHP/HDPE)exhibited the smallest increase in both carbonyl index(136.6％)and O/C ratio(66.23％),with no significant decline in physical properties observed.Thus,incorporating low CHP mixture fillers can effectively enhance the weather resistance of wood-plastic composites consisting of eucalyptus fiber and high-density polyethylene(WF/HDPE).
万方数据
维普
