Hybrid Nanoparticle-Reinforced Polyurethane Composites Mechanical Behavior

This study investigated the nanoparticle addition effect on the mechanical properties of DURATEK KLB 75 polyurethane (PU) resin used for bonding sheet metal, galvanized sheet, aluminum, and the sandwich panel. Nanoparticle-reinforced samples were produced by adding 0.5% hexagonal boron nitride nanoparticles (hBNNPs), 0.5% hBNNPs +0.25% multi-walled carbon nanotubes (MWCNTs) in PU resin. Tensile and hardness test (shore D) were conducted for every specimen to determine the effect of nanoparticle addition on the mechanical properties of the samples produced according to ASTM-D638-10 standards, and tests results curves and graphs drawn. Tensile strength for pure PU, 0.5% hBNNP added PU, and 0.5% hBNNP +0.25 MWCNT added samples are 20.80 Mpa, 14.87 Mpa, and 24.80 Mpa, respectively. Moreover, the hardness test result supported the tensile test. While h-BNNP causes a decreased tensile strength and hardness, the addition of CNT and h-BNNP increases these properties.