竹粉/低密度聚乙烯复合材料的动态流变特性

为了解木塑复合材料的动态流变特性,从而更好地提高产品的生产效率,以及揭示界面复合机理,以竹粉/低密度聚乙烯(LDPE)复合材料为研究对象,分别考察了MAPP偶联剂、EBS润滑剂、1010抗氧剂对复合材料流变行为的影响.利用密炼机对LDPE与竹粉进行密炼混合,在此过程中根据情况添加适量的偶联剂或润滑剂或抗氧剂,得到的复合...

Dynamic rheological properties of bamboo flour/low density polyethylene composites

In order to explore dynamic rheological properties of wood plastic composites,so as to better improve the production efficiency and reveals interfacial compound mechanism,the bamboo flour/low density polyethylene(LDPE) composite material was used as researched object.The effects of the coupling agent MAPP,lubricant EBS,antioxidant 1010 on the rheological behavior of composite were investigated respectively.According to the situation,coupling agent,lubricant agent and antioxidant were added into internal mixer during the process of mixing of melt LDPE and bamboo flour.The mixture was broken into fine pieces and then was used to make different testing specimens through injection molding machine.A series of dynamic rheological tests,including the strain sweep,temperature sweep and frequency sweep were done.Strain scanning results showed that compared to that without additives,the stain range of the linear visco-elastic zone of bamboo flour/LDPE composites with additives was wider;the effect of temperature on the dynamic rheological behavior of composite system was significant,especially coupling agent could effectively improve the compatibility between bamboo flour and matrix;the frequency scan indicated that additives,such as coupling agent and so on,could accelerate the dispersion of bamboo floor into polyethylene matrix.