Processing aid agents and ultrasonic wave were introduced during processing of ultrahigh molecular weight polyethylene (UHMWPE) with a general single-screw extruder. The mechanism of the conveying, melting, plasticating in the extruder and the effect of ultrasonic wave at the die during extrusion were studied. The mechanical and anti-wear properties of the extrudate, and the mechanism of the anti-wear enhancing owing to the addition of PP were explored. The experimental results show that.
1.The ad...