The Effect of Polyvinyl Pyrrolidone and Nickel Acetylacetonate on the Fabrication of Polyacrylonitrile Precursor Fiber

摘要

The effect of polyvinyl pyrrolidone (K30) and nickel acetylacetonate (Ni(acac)_2) on the fabrication of polyacrylonitrile(PAN) fiber was investigated. K30 and Ni(acac)_2 were chosen as pore-forming agents to prepare mesoporous carbon fibers. Meanwhile, the concentration of K30 and Ni(acac)_2, the mass ratio of pore-forming agent to PAN, the rheological properties of spinning dope, the mechanical properties, thermal performance of fiber precursor were also characterized. Furthermore, the precursor fibers and the carbon fibers were researched by FTIR analysis, TG analysis and static benzene adsorption. Based on the research, when the concentration of K30 and Ni(acac)_2 was 5%, the mass ratio of K30/Ni(acac)_2 to PAN was 7:3, the fiber precursors had excellent properties. Adding poreforming agent, the pore distribution was controlled.