| 초록 |
We report the structures, electrical and mechanical properties of a series of epoxy composites reinforced with multi walled carbon nanotube (MWCNT)-coated basalt fibers. MWCNT-coated basalt fibers were obtained by cyclic dip-dry coating process of neat basalt fibers in an aqueous MWCNT dispersion containing sodium dodecyl sulfate (SDS) surfactant, and they were composited with epoxy resin by hand lay-up method. The electrical conductivity of the epoxy composites with MWCNT-coated basalt fibers increased significantly from 3.25 10-9 S/cm to 1.44 10-1 S/cm with increasing the dip-dry coating cycle. The composites with MWCNT-coated basalt fibers fabricated by above 2 cycles of dip-dry coating exhibited excellent electric heating performance in terms of rapid temperature responsiveness, high steady-state maximum temperature, high electric power efficiency, and stable operational stability under applied voltages. |
