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首页> 外文期刊>Journal of Applied Polymer Science >Mechanical properties and structure of high-density polyethylene samples prepared by injection molding with low-frequency vibration
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Mechanical properties and structure of high-density polyethylene samples prepared by injection molding with low-frequency vibration

机译：低频振动注塑成型高密度聚乙烯样品的力学性能和结构

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摘要

To better understand the formation of different crystal structures and improve the mechanical properties of high-density polyethylene samples, melt vibration technology, which generally includes shear vibration and hydrostatic pressure vibration, was used to prepare injection samples. Through melt vibration, the crystal structure changed from typical spherulites of the traditional injection sample to obviously orientated lamellae of vibration samples. Sizes and orientation degrees of lamellae were different according to different vibration conditions. Crystallinity degrees of vibration samples increased notably. Therefore, the tensile strength of vibration samples increased with increasing vibration frequency and vibration pressure, whereas elongation of vibration samples decreased during the first stage and then continued to increase as the vibration frequency increased. (c) 2005 Wiley Periodicals, Inc.
机译：为了更好地理解不同晶体结构的形成并改善高密度聚乙烯样品的机械性能，使用了熔体振动技术（通常包括剪切振动和静水压振动）来制备进样样品。通过熔体振动，晶体结构从传统注射样品的典型球晶转变为振动样品的明显取向的薄片。薄片的尺寸和取向程度根据振动条件的不同而不同。振动样品的结晶度显着增加。因此，振动样品的拉伸强度随着振动频率和振动压力的增加而增加，而振动样品的伸长率在第一阶段降低，然后随着振动频率的增加而继续增加。 （c）2005年Wiley Periodicals，Inc.

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