石墨化生物质炭复合材料制备研究

Research on the Preparation of Graphitized Biocarbon Composite Material

在高温氮气流中制备竹基和木基生物质炭,并将其掺入聚丙烯(PP)中制备生物质炭-聚丙烯复合材料,探究生物质炭对复合材料力学性能的影响。通过拉曼光谱(Raman)、X射线衍射(XRD)和衰减全反射(ATR)红外光谱及复合材料中的空隙因子归一化分析表明:竹基生物质炭和木基生物质炭具有明显的石墨特性;与纯聚丙烯相比,竹基生物质炭-聚丙烯复合材料有效拉伸强度降低了约10%;木基生物质-聚丙烯复合材料拉伸强度为32.3 MPa,冲击强度为17.4 J/m,与纯聚丙烯相比,木基生物质炭-聚丙烯复合材料的拉伸模量、抗弯强度和抗弯模量分别增加56%、19%和67%;木基生物质炭掺入热塑性聚丙烯中可增强复合材料的力学性能。

In this research,the biocarbon were prepared from bamboo and wood under high temperature and nitrogen-flow conditions.These biocarbons were mixed in the polypropylene to prepare composites.The effects of biocarbon on the composite mechanical properties were studied.The biocarbon derivatized from the Radiata pine and moso bamboo showed significant graphite structure according to Raman spectrum,X-ray diffraction,ATR-FTIR analysis and the pore normalized analysis.Compared with pure PP,the tensile strength of the bamboobased biocarbon-PP composite material was decreased by 10%.The tensile strength and impact strength of the pine-based biocarbon-PP composite material were 32.3 MPa and 17.4 J/m,respectively.Compared with pure PP,the tensile modulus,flexural strength and flexural modulus of the pine-based biocarbon-PP composite material were increased by 56%,19%and 67%,respectively.The results indicated that the mixture of grahitized wood-based biocarbon in polypropylene would increase the mechanical strength of the composite material.