聚丙烯腈基静电纺纳米碳纤维的制备及拉伸强度测定

• 作 者: 余阳 周美华 薛刚
• 机 构: 东华大学环境科学与工程学院,
• 出 处: 化工新型材料
• 发表日期: 2010年03期
• 关键词: 有机高分子材料 纳米碳纤维 高压静电纺丝 碳化 拉伸强度 polymer material carbon nanofiber electrospinning c

采用DMSO/H2O混合溶剂法制备两种不同分子量聚丙烯腈(PAN),将PAN配成纺丝液高压静电纺丝制备纳米纤维毡,然后预氧化和碳化;通过热重、红外光谱、电镜等分析手段对纤维毡、预氧化纤维毡和碳纤维毡进行表征,研究热处理过程中的PAN纳米纤维毡的失重情况、结构变化;采用电子万能试验机对不同纳米纤维束拉伸强度进行测量和分析,相关数据可为静电纺纳米碳纤维毡的制备应用提供方向参考和数据支持。

Two kinds of polyacrylonitrile (PAN) with different molecular weights were prepared by the mixed solvent of DMSO and H2O. PAN was dubbed as spinning solution to prepare nanofiber mat by high-pressure electrospinning. Then the fibers were pre-oxidized and carbonized. Thermal gravimetry, FTIR, Analysis methods were used to characterize the fiber mat, pre-oxidized fiber mat and carbon fiber mat to investigate the weight loss and structural changes of PAN nanofiber mat during heat treatment. The tensile strength of different nanofiber bundles was measured and analyzed by electronic universal testing machine, Relevant data can provide direction reference and data support for the preparation and application of electrospun nanofibers.