CFRP의 기계적 성질에 미치는 나노입자의 영향

Abstract

TiO2 nanoparticle can be used for the improvement of performance of the carbon fiber reinforced epoxy resin composites. In this study, the effect of the size of TiO2 nanoparticle on the mechanical properties for the carbon fiber reinforced epoxy resin composites was investigated. The size of TiO2 nanoparticle was easily controlled by heat treatment. The heat treatment of TiO2 nanoparticle was conducted between 700℃ and 900℃. The obtained size of TiO2 nanoparticle was 20nm, 100nm and 200nm respectively. Three types of carbon fiber with different diameter were also used for this study. As the diameter of carbon fiber is smaller, the strand type specimens showed higher tensile strength. It was also found that the carbon fiber reinforced epoxy resin composites with 20nm TiO2 powder showed the highest tensile strength than the ones of any other types of CFRP regardless of fiber maker or fiber diameter. The size of TiO2 powder and the diameter of carbon fiber affected strongly to the interfacial properties of all kinds of CFRP in this study.