The Preparation of UHMWPE/MMT Composite Fiber by Melt Spinning Process

The ultra high molecular weight polyethylene(UHMWPE)/montmorillonite(MMT) nanocompo-sites were used to produce composite nanofiber by self-made experimental melt spinning machine.Microstructure characteristics and mechanical properties of the composite nano fiber were studied by SEM observation,X-ray analyses,DSC analyses and tensile strength measurement.The results showed that the top-quality fiber could be produced under the following conditions: draw ratio 14,drawing temperature 85 ℃ in water.There was a best residence time when the fibers passed through spinning cabinet.Microstructure characteristics showed that the crystal structure of the fiber transformed from tetragonal phase to hexagonal phase during super drawing.The degree of orientation and melting temperature of the fiber were increased at the stage of drawing.