Karakteristik sifat mekanik, ketahanan api dan pembakaran, dan morfologi nanokomposit campuran PVC dan LDPE

The purpose of the study was to determine the effect of addition of low density polyethylene (LDPE) and flame retardant on mechanical properties, resistant to fire and burning and morphology from the mixture of polyvinyl chloride (PVC), LDPE, flame retardant, and nanoprecipitated calcium carbonate (NPCC) as filler. The materials were mixed in laboplastomill at 215 ºC, torque speed 50 rpm, for 10 minutes. Nanocomposite was prepared by PVC/LDPE variations of 100/15; 100/20; 100/25; and 100/30 phr and flame retardant variations of 30 and 35 phr. The results showed that the hihger of LDPE in nanocomposite increased the hardness and impact resistance, however, it decreased the tensile strength, elongation at break, and density. Addition of flame retardant to the nanocomposites showed good resistance to fire and burning, and optimum mechanical properties were found in using of 35 phr flame retardant.The morphology of the nanocomposite, were observed by Scanning Electron Microscope (SEM) confirmed that homogeneous mixture of LDPE dispersed in the PVC matrix.