Preparation and characterization of vapor-grown carbon nanofibers-reinforced polyimide composites by in-situ polymerization

作者：Park Soo Jin^*; Lee Eun Jung; Lee Jae Rock; Won Ho Youn; Moon Doo Kyung

来源：Polymer-Korea, 2007, 31(2): 117-122.

• vapor grown carbon nanofibers
• polyimide
• volume resistivity
• thermal stabilities

In this work, the mechanical and electrical properties, and thermal stability of vapor-grown carbon nano fibers/polyimide (VGCNFs/PI) composite film synthesized by in-situ polymerization were investigated in terms of tensile properties, volume resistivity, and thermogravimetric analysis (TGA), respectively. From the results, the addition of VGCNFs with a certain amount into polyimide led to obvious improvement in tensile strength. The volume resistivity of the films was decreased with increasing the VGCNTFs content and the electrical percolation threshold appeared between 1 and 3 wt% of VGCNFs content, which was probably caused by the formation of interconnective structures among the VGCNFs in a composite system. The thermal stability of the film was higher than that of pure PI one. This result indicated that the crosslinking of VGCNFs/PI composites was enhanced by well-distribution of VGCNFs in PI resin, resulting in the increase of the thermal stability of the resulting composites.

• 出版日期2007-3