自增强HDPE棒材的结构特点及力学性能分析
nalysis of structural characteristics and mechanical properties of self-reinforced HDPE rods
利用自制模具，成功地制备了尺寸为Φ7.2mm×55mm的自增强高密度聚乙烯（HDPE）棒材。通过SEM观察、DSC分析、WAXD分析与力学性能测试，研究挤出自增强HDPE棒材微观结构特点和力学性能。研究结果表明，自增强试样呈现明显的皮芯结构，表皮的结晶度最高，芯部的组织与结构与普通注塑试样最相近。自增强试样较普通试样的微晶尺寸和结晶度大幅提高，晶面间距几乎未变化，熔点向高温区发生漂移，试样内部有大量的微纤结构存在。本试验所制备的自增强试样的拉伸强度和抗弯强度分别为220.6MPa和152.9MPa，都是未增强试样的近10倍。
Self-reinforced high density polyethylene (HDPE) rods with Φ7.2mm×55mm were successful prepared using homemade mould. Study structural characteristics and mechanical properties of self-reinforced HDPE rods by the SEM observation, WAXD analyses, DSC analyses and tensile strength measurement. The study shows that the self-reinforced HDPE rods display remarkable skin-core texture formation. The crystallite of outer layer is highest; the structure of inner core is similar to injection sample. Crystallite size and crystallinity of self-reinforced rods be promoted significantly, but crystal face distance remain invariability. Melt points drift to high temperature and there exists microfibril in the self-reinforced rods in great bulk. The tensile strength and welding strength of self-reinforced HDPE rods are 220.6Mpa and 152.9Mpa respectively. They are nearly reached 10 times than those of un-reinforced samples.
朱武、黄苏萍、周科朝、李志友
高分子化合物工业合成树脂工业、塑料工业
高密度聚乙烯自增强结构特点力学性能
high density polyethyleneself-reinforcementstructure characteristicsmechanical properties
朱武,黄苏萍,周科朝,李志友.自增强HDPE棒材的结构特点及力学性能分析[EB/OL].(2005-11-21)[2025-08-21].http://www.paper.edu.cn/releasepaper/content/200511-289.点此复制
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