PMID- 32824990 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201030 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 12 IP - 9 DP - 2020 Aug 19 TI - Tensile Behavior of High-Density Polyethylene Including the Effects of Processing Technique, Thickness, Temperature, and Strain Rate. LID - 10.3390/polym12091857 [doi] LID - 1857 AB - The primary goal of this study was to investigate the monotonic tensile behavior of high-density polyethylene (HDPE) in its virgin, regrind, and laminated forms. HDPE is the most commonly used polymer in many industries. A variety of tensile tests were performed using plate-type specimens made of rectangular plaques. Several factors can affect the tensile behavior such as thickness, processing technique, temperature, and strain rate. Testing temperatures were chosen at -40, 23 (room temperature, RT), 53, and 82 degrees C to investigate temperature effect. Tensile properties, including elastic modulus, yield strength, and ultimate tensile strength, were obtained for all conditions. Tensile properties significantly reduced by increasing temperature while elastic modulus and ultimate tensile strength linearly increased at higher strain rates. A significant effect of thickness on tensile properties was observed for injection molding specimens at 23 degrees C, but no thickness effect was observed for compression molded specimens at either 23 or 82 degrees C. The aforementioned effects and discussion of their influence on tensile properties are presented in this paper. Polynomial relations for tensile properties, including elastic modulus, yield strength, and ultimate tensile strength, were developed as functions of temperature and strain rate. Such relations can be used to estimate tensile properties of HDPE as a function of temperature and/or strain rate for application in designing parts with this material. FAU - Amjadi, Mohammad AU - Amjadi M AD - Mechanical Engineering, University of Memphis, Memphis, TN 38152, USA. FAU - Fatemi, Ali AU - Fatemi A AD - Mechanical Engineering, University of Memphis, Memphis, TN 38152, USA. LA - eng PT - Journal Article DEP - 20200819 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC7564066 OTO - NOTNLM OT - HDPE OT - processing technique effect OT - strain rate effect OT - temperature effect OT - tensile behavior COIS- The authors declare no conflict of interest. EDAT- 2020/08/23 06:00 MHDA- 2020/08/23 06:01 PMCR- 2020/08/19 CRDT- 2020/08/23 06:00 PHST- 2020/08/01 00:00 [received] PHST- 2020/08/16 00:00 [revised] PHST- 2020/08/17 00:00 [accepted] PHST- 2020/08/23 06:00 [entrez] PHST- 2020/08/23 06:00 [pubmed] PHST- 2020/08/23 06:01 [medline] PHST- 2020/08/19 00:00 [pmc-release] AID - polym12091857 [pii] AID - polymers-12-01857 [pii] AID - 10.3390/polym12091857 [doi] PST - epublish SO - Polymers (Basel). 2020 Aug 19;12(9):1857. doi: 10.3390/polym12091857.