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Received March 8, 2017 Revised March 27, 2017 Accepted April 6, 2017 c2017 The Korean Fiber Society Abstract: High-density polyethylene (HDPE) is widely used in industrial applications due to its versatility and chemical resistance. Lately, its versatility has been further expanded by surface cross-linking and modification. Also, reduction in the weight of polyethylene is one of the most important requirements in the industry. Creep test is a common method for studying the behavior of materials over a long period of time to design their industrial applications. Since a conventional creep test requires more than a test time of 10,000 h, a relatively short-time creep behavior can be predicted using time-temperature superposition (TTS) or mathematical modeling. The long-term creep behavior can be predicted by mathematical modeling using the short-term creep data. In this study, the creep behavior of HDPE fibers was measured in the load range of 20–50% of the ultimate tensile strength (UTS), and compared in terms of the number of filaments and denier. The long-term creep behavior was successfully predicted using the short-term creep behavior data obtained by mathematical modeling. Therefore, this approach can be used to predict the number and denier of PE fibers in industrial applications.

Measurement and Prediction of the Effect of Number and Denier of HDPE Fibers on Creep Behavior