Mechanical and electrical properties of polymer-derived Si-C-N ceramics reinforced by octadecylamine - Modified single-wall carbon nanotubes

作者：Shopova Gospodinova D^*; Burghard Z; Dufaux T; Burghard M; Bill J

来源：Composites Science and Technology, 2011, 71(6): 931-937.

DOI：10.1016/j.compscitech.2011.02.013

• Carbon nanotubes
• Polymer-matrix composites
• Mechanical properties
• Electrical properties

Polymer-derived Si-C-N ceramics reinforced by homogeneously distributed octadecylamine-functionalized single-walled carbon nanotubes (SWCNTs) were synthesized using a casting process, successive pressureless cross-linking and thermolysis. We find that the incorporation of even small amounts of modified SWCNTs leads to a remarkable improvement of mechanical and electrical transport properties of our composites. In particular, we find twofold enhancement of fracture toughness. The Youngs modulus and the hardness show increase by similar to 30% and 15%, respectively. Furthermore, the electrical conductivity was found to increase more than five orders of magnitude even for a tube content of 0.5 wt.%.

• 出版日期2011-4-12