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主要对UHMWPE(M-II)/HDPE(5000S)复合材料的流动性和力学性能进行了研究,主要包括要达到较佳的试验结果复合材料的模压成型工艺需要如何控制,以及成核剂对共混复合材料断裂强度的影响,和HDPE5000S、PE蜡用量对共混复合材料流动性及力学性能的影响.得到以下结论:共混物的流动性能和力学机械性能的变化并不随着HDPE5000S质量分数的变化单调变化,两者的变化趋势类似。成核剂ZnSt2的加入有利于两种聚合物共晶的形成,并使晶胞变小,从而显著提高复合材料的物理性能。小分子的PE蜡难以进入UHMWPE M-II高粘弹粒子中,不能有效的破坏UHMWPE分子链间缠结;但增加了HDPE分子链在UHMWPE中的分散。
Mainly on the flow and mechanical properties of UHMWPE (M-II) / HDPE (5000S) composites were studied, including the need to achieve better experimental results of the molding compound molding process needs to be how to control, and the nucleating agent on the total The effect of HDPE5000S and PE wax on the fluidity and mechanical properties of the blends were studied.It was concluded that the flowability and mechanical properties of the blends did not change with the mass fraction of HDPE5000S The change is monotonically changing, with similar trends in both. The addition of nucleating agent ZnSt2 is conducive to the formation of two kinds of polymer eutectic, and the unit cell becomes smaller, so as to significantly improve the physical properties of the composite material. Small molecule PE wax is difficult to enter the UHMWPE M-II high viscoelastic particles, can not effectively destroy the intertwining of UHMWPE molecular chains; but increases the dispersion of HDPE molecular chains in UHMWPE.