Plasticised and unplasticised poly(vinyl chloride) (PVC) are used as engineering materials in many applications where they may be subjected to impact loading leading to high strain rate deformation at a variety of temperatures. It is therefore necessary to study the mechanical responses of these and similar materials over a range of loading conditions, especially as they exhibit strong rate and temperature dependence, and could include a low temperature brittle transition. In this paper, a model of the mechanical response of a PVC with 20 wt% plasticiser and one with no plasticiser is applied over a wide range of strain rates and strains and shown to have excellent agreement with experiments conducted in a previous study. As it is challenging to obtain high rate data on rubbery materials using conventional apparatus, such as the split-Hopkinson pressure bar (SHPB), an alternative approach is presented based on a novel modelling framework, which uses the time–temperature superposition principle and is fully calibrated using quasi-static experiments at different temperatures.

增塑和未增塑的聚氯乙烯（PVC）在许多应用中用作工程材料，在这些应用中，它们可能承受冲击载荷，从而在各种温度下导致高应变率变形。因此，有必要研究这些和类似材料在一定载荷条件下的机械响应，特别是因为它们表现出强烈的速率和温度依赖性，并且可能包括低温脆性转变。在本文中，具有20 wt％增塑剂和没有增塑剂的PVC的机械响应模型适用于各种应变速率和应变，并且与先前研究中的实验具有极好的一致性。由于使用常规设备获取橡胶材料的高速率数据具有挑战性，