Vol. 12, Issue 2 (2024)
Evaluation of the process parameters of 180 tons injection molding machine using GPPS and HDPE as thermoplastic materials in plastic production workshop of Sedi-Enugu Naseni
Author(s): Dania D, Imoh UR, Okeke OR, Onu CE, Okereke EE and Nwangbo TN
Abstract: 180 ton-capacity Injection molding machine in Scientific Equipment Development Institute SEDI Enugu, an arm of the National Agency for Science and Engineering Infrastructure (NASENI), Abuja, Nigeria was used to produce high quality plastic executive hangers, plastic agro products, plastic automobile spare parts, plastic plumbing valves, plastic science and laboratory equipment of high domestic and industrial value through a technology that can be used in Cottage and SME’s in line with the current demand of the economic policies of the Federal Government of Nigeria. Engineers and scientists in the plastic workshop of SEDI Enugu analyzed and compared the processes parameters for general purpose polystyrene virgin material (GPPS G-126) and high density polyethylene recycled (HDPE). On the GPPS material, It was observed that the nuzzle heater temperature control was operated at 230 °C, barrel temperature 250 °C, injection time 0.370 seconds, cooling time 3.312 seconds, ejector time 0.140 seconds. On the HDPE, the nuzzle heater temperature control was operated at 190 °C, barrel temperature 180 °C, injection time 0.20 seconds, cooling time 0.15seconds, ejection time 0.11 seconds. The above operational standard was based on daily experimental approaches in the cost of production of the executive hangers using (GPPS G-126) and HDPE thermoplastic materials to determine the best quality product formation to satisfy the end users. The result shows that GPPS can withstand higher temperatures before softening or undergoing deformation and has an extended molecular configuration with a benzene ring. The absence of branches or side chains allows for closer packing of polymer chains, resulting in a more rigid and stable structure while that of HDPE is a polymer composed of ethylene monomers and has a linear structure with occasional branches, making it less densely packed compared to GPSS. The branching in HDPE imparts more flexibility to the polymer chains.
Pages: 28-32 | 85 Views 59 Downloads
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How to cite this article:
Dania D, Imoh UR, Okeke OR, Onu CE, Okereke EE, Nwangbo TN. Evaluation of the process parameters of 180 tons injection molding machine using GPPS and HDPE as thermoplastic materials in plastic production workshop of Sedi-Enugu Naseni. Int J Chem Stud 2024;12(2):28-32.
