碳化温度对静电纺碳化钽/碳纤维微观结构和性能的影响。

Effect of Carbonization Temperature on Microstructures and Properties of Electrospun Tantalum Carbide/Carbon Fibers.

机构信息

Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.

Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.

出版信息

Molecules. 2023 Apr 13;28(8):3430. doi: 10.3390/molecules28083430.

DOI:10.3390/molecules28083430

PMID:37110665

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10144701/

Abstract

Compared with traditional metal materials, carbon-based materials have the advantages of low density, high conductivity, good chemical stability, etc., and can be used as reliable alternative materials in various fields. Among them, the carbon fiber conductive network constructed by electrospinning technology has the advantages of high porosity, high specific surface area and rich heterogeneous interface. In order to further improve the conductivity and mechanical properties of pure carbon fiber films, tantalum carbide (TaC) nanoparticles were selected as conductive fillers. The crystallization degree, electrical and mechanical properties of electrospun TaC/C nanofibers at different temperatures were investigated. As the carbonization temperature increases, the crystallization degree and electrical conductivity of the sample also increases, while the growth trend of electrical conductivity is markedly slowed. The best mechanical properties of 12.39 MPa was achieved when the carbonization temperature was 1200 °C. Finally, through comprehensive analysis and comparison, it can be concluded that a carbonization temperature of 1200 °C is the optimum.

摘要

与传统金属材料相比，碳基材料具有密度低、导电性好、化学稳定性好等优点，可作为各种领域中可靠的替代材料。其中，通过静电纺丝技术构建的碳纤维导电网络具有高孔隙率、高比表面积和丰富的异质界面等优点。为了进一步提高纯碳纤维薄膜的导电性和机械性能，选择碳化钽（TaC）纳米颗粒作为导电填料。研究了不同温度下静电纺 TaC/C 纳米纤维的结晶度、电学和力学性能。随着碳化温度的升高，样品的结晶度和电导率也随之增加，而电导率的增长趋势明显放缓。当碳化温度为 1200°C 时，获得了最佳的机械性能，为 12.39 MPa。最后，通过综合分析和比较，可以得出结论，碳化温度为 1200°C 是最佳的。