| 초록 |
In this work, the effects of changes in the surface properties of MWCNTs by being electroless Ni-plated on thermal conductivity and fracture toughness of epoxy matrix composites were examined. The surface properties of MWCNTs were analyzed by using a scanning electron microscope, an X-ray photoelectron spectroscopy, and X-ray diffraction analysis. The thermal conductivity was measured by the thermal conductivity measurement system. The fracture toughness was analyzed by measuring the critical stress intensity factor (KIC). From the results, it was found that the thermal conductivity increases with increasing contents of electroless Ni-plated MWCNTs. The KIC also increased with increasing contents of electroless Ni-plated MWCNTs, however, it rather decreased at over 10 phr. It is considered that this is because non-uniform distribution and partial entanglement occurred in case the contents of electroless Ni-plated MWCNTs were high. |
