化学镀竹粉/HDPE复合功能材料的性能研究

Research on Properties of Ni-Fe-P Ternary Electroless Coated Bamboo-HDPE Composites

以自制镍-铁-磷(Ni-Fe-P)三元化学镀竹纤维和高密度聚乙烯(HDPE)粉作为主要原料,混合均匀后制备出新型竹塑复合材料,研究其性能。结果表明,化学镀后的竹纤维表面覆盖了连续致密的Ni-Fe-P三元合金层。竹塑复合材料的导电和导热性能均随着化学镀竹纤维(ECBF)含量的增加而呈上升趋势,复合材料的电导率随ECBF的增加不是持续不断增加的,当复合材料形成良好的导电网络之后,再继续增加ECBF,复合材料电导率不会持续上升。随着ECBF含量的增加,竹塑复合材料的弯曲强度和拉伸强度均逐渐降低,而冲击强度呈现先上升再下降的趋势;ECBF的添加量对复合材料力学性能的影响程度由大到小顺序为:冲击强度>弯曲强度>拉伸强度。

Taking self-made Ni-Fe-P ternary electroless coated bamboo fibers and high density polyethylene(HDPE)powder as main raw materials,a new type of bamboo-plastic composites was prepared after mixing uniformly and its properties were studied.The results show that the electroless bamboo fiber is covered with continuous compact Ni-Fe-P ternary alloy layer.The electrical and thermal conductivity of Ni-Fe-P ternary electroless coated bamboo fiber/HDPE composites increase with the increase of electroless coated bamboo fiber(ECBF)contents,however,the electrical conductivity of composite material does not increase continuously with the increase of ECBF contents,when the composite material forms a good conductive network and then continues to increase the amount of ECBF,its electrical conductivity does not continue to increase.As the increase of the content of ECBF,the flexural strength and tensile strength of bamboo-plastic composites decrease gradually,while the impact strength increases first and then decreases.The influence of the addition of the amount of ECBF on the mechanical properties of the composites is impact strength greater than flexural strength,which is greater than tensile strength.