
UHMWPE动态成型研究进展
胡松喜, 陈新度, 何俭恒, 李锐伟
UHMWPE动态成型研究进展
Research Progress of UHMWPE Dynamic Molding
在超高分子量聚乙烯(UHMWPE)成型过程中引入各种动态力场或多种力场耦合作用,有效解决了模压、烧结等静态成型方式存在的成型周期长、能耗高、难以制造高性能UHMWPE制品、难以应用于UHMWPE复合材料成型等问题。文章先后分别阐述了高速冲击力场、超声振动力场、剪切/拉伸力场、脉冲振动力场、脉冲振动力场协同熔体流场等动态力场在UHMWPE及其复合材料成型的研究和应用,重点分析了各个动态力场作用下UHMWPE动态成型原理和成型特点,最后对比分析各个UHMWPE动态成型方式的优缺点,得出拉伸力场、脉冲振动力场以及脉冲振动力场协同熔体流场作用能明显地改善UHMWPE性能,为UHMWPE高效成型提供新思路和新方向。
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.
Ultra-high molecular weight polyethylene / Dynamic / Molding
TQ325.12
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