Measurement and Analysis on Tensile Strength and Crystallinity of Vibrating Extruded High-Density Polyethylene (HDPE) Sheet

Abstract:

By the apparatus of differential scanning calorimetry (DSC), scanning electron microcopy (SEM) and wide angle X-ray diffraction (WAXD), The effect of vibration on the microstructure and mechanical properties of high-density polyethylene (HDPE) sheets, obtained through vibration plasticating extruder in low temperature, were measured and analysed. The result show that the tensile strength was much improved under the reciprocating axial vibration in low temperature. The phenomenon indicate that the vibration extrudate in low temperature has higher crystallinity, perfect crystallite, and strong inter-spherulite ties, which account for enhancement of the mechanical properties of sheets, compared to conventional static extrusion.

• Periodical: Advanced Materials Research (Volumes 291-294)
• Pages: 561-564
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.291-294.561
• Online since: July 2011
• Authors: Bao Shan Shi, Xue Mei Qin, Bing Li
• Keywords: Differential Scanning Calorimetry (DSC), Measurement and Analysis, Scanning Electron Microscope (SEM), Wide Angle X-Ray Diffraction (WAXD)

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