Study on Mechanical Properties of rHIPS/ABS/Saw Dust Using Box-Behnken Design with Maleic Anhydride Polypropylene

Abstract

There is an increasing demand for sustainable materials due to the harm that plastic waste is causing to ecosystems and human health. The purpose of this work is to determine the composition of rHIPS/ABS/sawdust composites and to examine their mechanical characteristics, notably impact and tensile strength. Standard test moulds ASTM D638 will be used to prepare the samples, and Box-Behnken Design (BBD) will be utilised for data analysis. The injection moulding machine has the following melting temperatures and cooling times: T1 is 200°C, T2 is 215°C, and T3 is 230°C (16–20 seconds). Three injection pressure levels will change during the moulding process: 100, 115, and 130 bar. The temperature of the mould will be maintained between 35°C and 40°C to control the cooling of the material that has been formed. According to the results, the maximum tensile strength is 102.6 MPa at 215°C melting temperature, 115 MPa pressure, and 18 seconds of cooling time. As for the data on tensile strength, the lowest result is 28.735 MPa at 230 °C for melting, 115 MPa for pressure, and 16 seconds for cooling.  The maximum impact strength measured at 200 °C melting point, 130 MPa pressure, and 18 seconds of cooling time is 4.03 kJ/m². When the melting temperature is 200 °C, the pressure is 100 MPa, and the cooling time is 18 seconds, the lowest impact data is 2.76 kJ/m².