• 研究论文 •

高密度聚乙烯单轴拉伸力学性能试验研究

1. 1. 后勤工程学院军事土木工程系，重庆 401311;
2. 重庆市地质灾害防治工程技术研究中心，重庆 401311
• 收稿日期:2016-06-30 出版日期:2016-11-25 发布日期:2016-11-25
• 通讯作者: 石少卿;E-mail:ssq601@163.com

The mechanism property analysis of the uniaxial tensile experimental about the high density polyethylene

CHEN Zipeng 1,2, SHI Shaoqing 1,2, LUO Weiming 1

1. 1. Department of Civil Engineering, Logistical Engineering University, Chongqing 401311, China；
2. Chongqing Key Laboratory of Geomechanics & Geoenvironmental Protection, Chongqing 401311, China
• Received:2016-06-30 Online:2016-11-25 Published:2016-11-25

Abstract:

Since the high density polyethylene(HDPE) is popularly used in areas such as the chemistry, construction and the military project, the types and the conditions for usage are verified. The uniaxial tensile test on the smooth surface specimens and the pattern surface specimens is performed, with different stretching speed and tensile directions. The experiment shows that the yield platform value of the smooth specimens also increases with the increase of the stretching speed, which is under the transversal tension. When the stretching speed is 150 mm/min, the smooth transversal tensile specimen has inconspicuous second yield point, which means that it has better performance on the tension. The rate dependence of the pattern specimens is more obvious and its value is 5.02% under 3 different stretching speed. However, the load the pattern specimens can undertake is lower contrast with the smooth specimens. It is easier for the pattern specimens to be broken than the smooth specimens, and it is also easier for the longitudinal tensile specimens to be broken than the transversal tensile specimens. Consequently, the smooth transversal tensile specimen has better tensile strength.