Various dynamic force fields or coupling force fields are introduced into the molding process of ultra-high molecular weight polyethylene(UHMWPE),which effectively solves the problems of long molding cycle,high energy consumption,difficult to manufacture high-performance products and difficult to be applied to the molding of composites in static molding methods such as molding and sintering.In this paper,the research and application of dynamic force fields such as high velocity compaction force field,ultrasonic vibration force field,shear/tension force field,pulse vibration force field,and synergistic effect of pulse vibration force field and melt flow field in the molding of UHMWPE and its composites are described respectively.The principles and characteristics of UHMWPE dynamic molding under the action of each dynamic force field are analyzed.Finally,by comparing and analyzing the advantages and disadvantages of various dynamic molding methods of UHMWPE,it is concluded that the tension force field,pulse vibration force field,and synergistic effect of pulse vibration force field and melt flow field can significantly improve the properties of UHMWPE,providing new ideas and directions for UHMWPE efficient molding.
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