Solvent Debinding of MIM Parts in a Polystyrene-Palm Oil Based Binder System

International Engineering Research and Innovation Symposium

Asmawi, R.^1 ; Ibrahim, M.H.I.^1 ; Amin, A.M.^1 ; Mustafa, N.^1

Advanced Manufacturing and Materials Center (AMMC), Universiti Tun Hussein Onn Malaysia (UTHM), Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

关键词: Extraction time;    Injection moulded;    Palm kernel oil;    Scanning electron micrographs;    Solvent debinding;    Solvent-extraction process;    Structure evolution;    Waste polystyrene;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/160/1/012063/pdf
DOI  :  10.1088/1757-899X/160/1/012063

来源: IOP

【 摘 要 】

The influence of the leaching temperatures on the solvent debinding process of SS316L stainless steel alloy compact has been investigated. Solvent debinding process of injection moulded SS316L feedstock was conducted to eliminate palm kernel oil by using n- heptane solution at various temperatures of 40, 50 and 60°C and at different time duration up to 9 hours. The samples were prepared by injection molding a mixture of stainless steel SS316L alloy with waste polystyrene polymer and palm kernel oil at powder loading 60% vol. The weight loss percentages of palm kernel were calculated and the pore structure evolution was analyzed by scanning electron micrograph to observe the pores created after solvent extraction process. Results show that a complete diffusion of the palm kernel molecules out of the compact part best at 60°C within 6 hours of extraction time.