Multiscale description and prediction of the thermomechanical behavior of multilayered plasticized PVC under a wide range of strain rate

Abstract

Plasticization of polymers largely contributed to their worldwide utilization, especially for automotive crashworthiness, by making them a more ductile material. For such applications, a clear understanding of the mechanical properties evolution over a large range of strain rate and temperature is needed. In this study, we investigate a plasticized poly(vinyl chloride) (PPVC) manufactured through a multi-layered process for the automotive industry. Analysis of the microstructure before and after mechanical testing, at different temperature and strain rate, highlighted on the presence of sodium aluminosilicate within material microstructure. After thermal degradation analysis, these particles seem to be the only one to remain at high temperature. Moreover, it is important to mention that for the possible applications of this material, the temperature range is around the glass transition region leading. Thus, careful attention should be focused on the evolution of the material properties and on the way to model them. Numerical prediction of the storage modulus and yield stress using homemade models show a good agreement with the experimental data. More, these models will make reliable the use of these materials over a wide range of temperatures and strain rates that are difficult to obtain by experience, such as intermediate strain rates between quasi static and dynamic loading.

ADMET polymerization in affordable, commercially available, high boiling solvents

“…Their properties are given in Table 1. These three solvents have been used as plasticizers for a variety of polymers and are all liquid at room temperature [31][32][33][34]. Propylene carbonate, (PC) is a small molecule which is often used in the vinyl polymer industry and consumer products such as adhesives, paints and cosmetics and is soluble in water [35,36].…”

A novel methodology for predicting the high rate mechanical response of polymers from low rate data: application to (plasticised) poly(vinyl chloride)

“…Previous work has also focussed on experimentally simulating a high rate test by either increasing the temperature during a low temperature isothermal test Siviour 2013, 2015) or through a series of strain rate jump tests (Furmanski et al 2013). Much of the constitutive modelling has also tended to focus on predicting single values such as the yield stress (Bernard et al 2018;Kendall and Siviour 2012) or made use of a large number of parameters characterised at high rates (Wang et al 2017;Österlöf et al 2014). For this reason, this paper looks to a novel modelling framework that has been developed by building on previous research Siviour 2017, 2018a,b), to predict the full high rate response of the PVC and PPVC via constitutive models calibrated entirely with data obtained accurately at low strain rates and a range of temperatures.…”

A Simple Rate–Temperature Dependent Hyperelastic Model Applied to Neoprene Rubber

“…Inhibitions to micromolecular movement at high rates were shown to be analogous to those at low temperature. Much of the constitutive modelling based on these observations has tended to focus on predicting single values such as the yield stress [11,12] or made use of a large number of parameters [13,14]. TTS was developed for thermo-rheologically simple materials, but the appropriateness of its application to complex, commercially-produced polymers at finite strains cannot always be assumed and needs to be experimentally established.…”