An experiment of producing high density polyethylene (HDPE) nano-composite filled with 4wt.% talc was presented. Acting as filler and a reinforcing agent in the HDPE, talc powder, sized at around 5 μm, was surface-treated with aluminum diethylene glycol dinitrate coupling agent before adding to the HDPE. Analyses of the reinforced HDPE nano-composite show significant improvement in its mechanical properties including, tensile strength (>26 MPa), break elongation (<1.1%), flexural strength (>22 MPa), and friction coefficients<0.11. The results demonstrate that, after surface-treated, talc can be used as a promising filling material and a reinforcing agent in making HDPE nano-composite. An experiment of producing high density polyethylene (HDPE) nano-composite filled with 4 wt.% Talc was presented. Acting as filler and a reinforcing agent in the HDPE, talc powder, sized at around 5 μm, was surface-treated with aluminum diethylene glycol Analyzes of the reinforced HDPE nano-composite show significant improvement in its mechanical properties including, tensile strength (> 26 MPa), break elongation (<1.1%), flexural strength (> 22 MPa) and friction coefficients <0.11. The results demonstrate that, after surface-treated, talc can used as a promising filling material and a reinforcing agent in making HDPE nano-composite.