Title:
Prepublished: Tensile Properties of PP and PET Fiber Bundles in Outdoor Thermal Environment
Author(s):
Zihao Shen and Wenguang Liu
Publication:
Materials Journal
Volume:
Issue:
Appears on pages(s):
Keywords:
high temperature; polyethylene terephthalate; polypropylene; tensile properties
DOI:
10.14359/51746711
Date:
3/24/2025
Abstract:
To constitute an alternative to ordinary fiber-reinforced polymer in the strengthening of existing structures, the tensile properties of polypropylene (PP) and polyethylene terephthalate (PET) fiber bundles in the outdoor thermal environment (80℃ and 105℃) were investigated. The fiber bundles were carefully removed from a woven textile and test specimens with a gauge length of 25 mm were fabricated. Based on the experiments, a Weibull distribution model of the tensile strength of the PP and PET fiber bundles was developed. Test results show that exposure temperature and time significantly affect the tensile strength, rupture strain, and elastic modulus of the PP and PET fiber bundles. The strength degradation of PP and PET fiber bundles is not obvious when exposed to 80℃. In contrast, on exposure to 105℃, The usage of them requires consideration of mechanical properties degradation. This study provides exact data for the use of PP and PET fiber bundles in outdoor thermal environments.