| 초록 |
This paper investigates processing and characterization of transparent polycarbonate (PC)/carbon nanotube (CNT) composites with improved impact toughness. PC/CNT composite films were fabricated using a solvent-based film casting method. Several optimization schemes were adopted to determine optimal solvent and concentrations of PC/CNT in the solvent. A competing mechanism between CNT aggregation and solvent-induced PC crystallization, both of which influence transparency was identified, and optimal processing parameters were determined using the design of experiments technique. Several candidate composite design schemes for improved impact resistance are presented. The composite architecture includes multi-layer, multi-material configurations, which entail lamination of PC sheets with PC/CNT composite films as reinforcing/toughening interlayers. A number of samples were fabricated and tested for impact toughness, and based on the results, general design guidelines were developed. |
