| 초록 |
Carbon nanotubes had generated tremendous interest because of their unique combination of electronic, mechanical, chemical, and thermal properties. Polyetherimide (PEI) were widely used in applications ranging from microelectronics to aerospace. Due to their insulating nature, significant accumulation of electrostatic charge can result on their surface, causing local heating and premature degradation to electronic components or space sturcture. This work described carbon nanotubes-reinforced PEI composites with a level of electrical conductivity sufficient to permit electrostatic discharge, as well as mechanical interfacial properties superior to that of the base polymer. Carbon nanotubes (CNTs) were chemically modified by 35 wt.% H3PO4 or 35 wt.% KOH to prepare CNT/PEI composites. The effect of chemical treatment on CNT surfaces was examined by the Fourier transform infrared spectroscopy. The surface energetics and mechanical interfacial properties of CNT/PEI composites were discussed in terms of contact angles, fracture toughness (KIC, GIC), and impact tests in this work.
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