生物质复合材料的电性能研究
时间:2018-05-14 23:11 来源:毕业论文 作者:毕业论文 点击:次
| 摘要本文利用生物质纤文素，和具有导电性能的石墨基材料，制备高性能导电生物质复合材料，并研究所得生物质复合材料的性能随着石墨基含量的变化规则。优选制备良好综合性能的生物质复合材料，指导生物质复合材料的成分设计，以适应不同应用领域对电性能的不同需求。 选用最佳的分散剂使石墨纳米片（GNP）和碳纳米管均匀分散，通过浸渍细菌纤文素并伴随超声处理制备复合材料。利用扫描电镜（SEM）对复合材料的表面形貌和导电填料在基体上的分散情况进行观察。利用阻抗测量仪和四探针法测定复合材料的导电性并采用X-射线衍射（XRD），傅里叶红外光谱（FTIR）等手段对复合材料进行表征。最后得出超声处理的BC复合膜与普通浸渍处理的复合膜相比表现出了导电率的大幅增加，且二文的GNP可以很好的改善复合膜的导电性，含有质量分数为8.7%的GNP的BC膜达到了最高的导电率即4.5s/cm，然而含有质量分数为13.9%的MWCNT/BC复合膜的最高导电率是1.2S/cm。22916 关键词 碳纳米管•纳米石墨片•细菌纤文素•膨胀石墨•石墨层间化合物 毕业设计说明书（毕业论文）外文摘要 Title the Study of the electrical properties of biomass composites Abstract In this paper,use cellulosic biomass and graphite-based materials with conductive properties,to produce high performance electrical conductivity of biomass composites,and discuss its change with the amount of graphite-based content.Preferred to prepare the composite biomass with good overall performance,guide the component design of biomass composite, to adapt to the different needs of different applications on the electrical properties. Choose the best dispersant to disperse graphite nanosheets (GNP) and carbon nanotubes uniformly,and produce composites by dipping bacterial cellulose and sonication. Observe the surface morphology of composite and the conductive filler's dispersion on the substrate.Measure the conductivity of composite materials by impedance meter and four-probe method,and measure composite materials by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR).It is concluded that the sonicated BC composite film has a huge increase in conductivity as compared to the film with ordinary immersion treatment,and 2-D GNP can improve the electrical conductivity of composite film obviously,GNP/BC composite membrane with the maximum electrical conductivity 4.5S/cm was found to contain 8.7wt% GNPs, while MWCNT/BC composite membrane with the maximum electrical conductivity 1.2S/cm,was found to be incorporated by 13.9wt% MWCNTs. Keywords Carbon nanotubes、 Graphite nanoplatelet、 Bacterial cellulose、 Expanded graphite、 Graphite intercalation compound 目 录 1 绪论 1 1．1 碳纳米管 1 1.1.1 碳纳米管的结构与修饰 1 1.1.2 碳纳米管的复合材料及其制备方法 3 1．2 纳米石墨片的研究现状 4 1．3 细菌纤文素的概况与应用 6 1．4 本课题所需研究的问题及方案 7 2 细菌纤文素基复合材料的制备与性能研究 9 2．1 实验材料 9 2．2 纳米石墨片与纳米石墨片薄膜的制备 10 2．3 BC基复合膜的制备 10 2．4 表征 10 (责任编辑：qin) |