| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a composite material containing carbon nanotubes and having high glass transition temperature and high heat-resistance by combining carbon nanotubes with a thermosetting polyimide having multiple terminal groups. <P>SOLUTION: The composite material is produced by dispersing carbon nanotubes composed of at least one kind of single or multi-layer carbon nanotubes or nanofibers produced by vapor-phase growing process and having an average diameter of ≤250 nm, preferably ≤150 nm in a thermosetting imide oligomer containing imide ring in the main structure and further containing one or more terminal groups selected from phenylethynyl group, nadiimide group, maleimide group and acetylene group and curing the mixture by heating. The obtained polyimide composite material has electrical conductivity, improved elastic modulus and strength and improved glass transition temperature as an index of heat-resistance. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
