Optimization of Processing Parameter For Recycled Polypropylene-Nanoclay on Tensile Strength

Abstract Injection moulding is one of the most efficient process in mass production that can easily produce accurate geometry product with very short cycle time. The main purpose of this research is to analyze the effect of processing parameter on the quality of the product. Through this experiment, the parameters that are going to be used are melt temperature, packing pressure, screw speed, and filling time. The materials that will be used in this study are polypropylene and recycled polypropylene nanoclay. According to the results, 100% polypropylene give average tensile strength value around 28.5 MPa with best parameters are melt temperature 160°C, packing pressure 60%, screw speed 70%, filling time 2s. 50% recycled polypropylene give tensile strength value around 28.6 MPa with 160°C, 70%, 60%, 3s. 75% recycled polypropylene nanoclay give 28.2 MPa tensile strength value with 165°C, 60%, 70%, 3s. 25% recycled polypropylene nanoclay give 28.54 MPa tensile strength value with 165°C, 60%, 70%, 3s. The last recycled polypropylene nanoclay 100% give tensile strength value of 27.9 MPa with melt temperature 160°C, 70%, 50%,1s. Each composition for tensile shown different value according to their recycled PPNC percentage. Keywords : injection molding, polypropylene, recycled-polypropylen