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茂金属聚乙烯是20世纪90年代才开发出来的新一代聚乙烯,它以独特的立构规整性及良好的物理力学性能引起材料界和产业界的极大关注,迅速掀起了世界范围内的研究热潮[1]。本实验通过动态保压注塑成型方法,在单方向往复低剪切应力场作用下制得了双向自增强的HDPE/m-LLDPE平板试样,研究了双向自增强效果与液压站输出压力的大小以及不同配方等工艺条件之间的关系。实验结果表明,在低剪切应力场的作用下,该共混体系的动态保压注射成型试样的拉伸强度与模量在平行于物料流动方向和垂直于物料流动方向上都得到了明显增强。通过扫描电镜发现了串晶互锁结构的生成。
Metallocene polyethylene is a new generation of polyethylene which was developed in the 1990s. It has drawn great attention from the material industry and the industry with its unique stereoregularity and good physical and mechanical properties. It has rapidly set off worldwide Research craze [1]. In this experiment, two-way self-reinforced HDPE / m-LLDPE flat specimens were prepared by dynamic dosing injection molding under the action of unidirectional reciprocating low shear stress field. The effects of two-way self-reinforcement and output pressure of hydraulic station and Different formula and other conditions between the relationship. The experimental results show that under the action of low shear stress field, the tensile strength and modulus of dynamic durometer injection molding samples of the blends are obviously parallel to the material flow direction and perpendicular to the material flow direction Enhanced. Scanning electron microscopy found that the formation of string interlock structure.