Abstract
Self-reinforced semi-crystalline composites are one way of facilitating the recycling of composites. While high stiffnesses can be achieved with simple polyethylene, the limitations concern creep resistance at temperature. The long-term mechanical strength must be evaluated to consider the increasing use of Self-Reinforced polyethylene. It is essential, especially since the matrix and the reinforcements are viscoelastic. Also, the influence of stress and temperature on the creep behavior of the composite is studied and compared to that of an unreinforced polyethylene. The composite is more thermally stable over the examined temperature range and more resistant to creep, even with a very low proportion of reinforcement. Nevertheless, the conditions of applying a time–temperature superposition principle are questioned because a microstructure transition seems to take place for the reinforcements as a function of stress, temperature, and time.
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