Study Of The Gas Assisted Extrusion Board For UHMW-PE

The ultra high molecular weight polyethylene (UHMW-PE) is widely used in applications due to its outstanding properties. But the applications of UHMWPE are influenced, because they can not be injected or injected for the poor capability of flowing. In this paper, on the one hand, the flowing of UHMWPE are improved by filling PE, PP or POM. On the other hand, the mechanical property, wearing quality and fluidity of the composites were studied by filling different stuffing. When the last scheme was confirmed, according to the theory of gas assisted extrusion, we designed the gas assisted extrusion mould. And the extrusion of UHMW-PE was accomplished. Due to the experiments, we can get these conclusions.(1) the fluidity of PE is better, the fluidity amelioration of UHMWPE will be better. And we can see that the modification of wearing quality is not clearly, when the filling of HDPE don't achieved 50%. And, we can see the 5000S is good to the improvement of mechanical property.(2) Middle or low molecular weight polyethylene can improve the composites fluidity, but will lead the degradation of mechanical property.(3) PP can ameliorate the system fluidity, but is of no effect to the mechanical property, and lead to the degradation of wearing quality.(4) POE can improve the composites fluidity, but is invalidation for the mechanical property, and degrade the wearing quality. We should pay attention that the filling of...