Study of flow properties of Nylon 6 recycled material in reciprocating injection molding machine

Abstract

Many of the industries use nylons mainly for engineering applications for several reasons. Basically nylon provide a combination of toughness, rigidity and lubrication free performance of products, which leads to mechanical uses. Some of the initial properties of nylons may change in the process of mechanical and thermal recycling. The flow properties of extrusion grade recycled nylon 6 were observed with a torque measuring mixer and a reciprocating screw injection moulding machine. Low Density Polyethylene and Zinc-stearate were used separately as lubricants. The plasticating behaviour was observed by increasing mixer temperature in a torque measuring mixer and recorded as torque versus time. The resultant stock temperature variation of above process was also recorded graphically. The flow of recycled nylon 6 through reciprocating screw injection moulding machine was discussed. The effect of polyethylene (1% maximum) incorporated recycled .nylon 6, to the quality of specific product was compared against the pure recycled nylon 6.