Driven by the need to design environmentally friendly and sustainable polymeric materials that achieve superior mechanical properties, this work is centred on the relationship between the microstructure and the nonlinear quasi-static and dynamic mechanical behaviour of novel polyamide 6 (PA6)/carboxylated hydrogenated acrylonitrile butadiene rubber (XHNBR) thermoplastic vulcanizates (TPVs). In particular, with the aim to contribute to the further understanding of the physical mechanisms involved in the complex nonlinear mechanical behaviour of TPV compounds, the impact of different microstructural features of the PA6 matrix and the rubber network on the mechanical behaviour has been investigated. Interestingly, stronger rubber network interactions and so better elastic recovery capacity of the rubber network can hinder the growth of voids more efficiently. The observed micromechanical deformation processes are interpreted in terms of the role of the yielding, buckling and bending of thin PA6 ligaments at low strain levels and the rupture of covalent and non-covalent bonds presented in the rubber network at high strain levels.

在设计能够实现优异机械性能的环保且可持续的聚合物材料的推动下，这项工作的重点是新型聚酰胺6（PA6）/羧化氢化丙烯腈丁二烯的微观结构与非线性准静态和动态力学行为之间的关系。橡胶（XHNBR）热塑性硫化橡胶（TPV）。尤其是，为了有助于进一步理解TPV化合物复杂的非线性力学行为所涉及的物理机制，已经研究了PA6基体和橡胶网络的不同微观结构特征对力学行为的影响。有趣的是 橡胶网络之间的相互作用更强，因此橡胶网络的弹性恢复能力更好，可以更有效地阻止空隙的增长。观察到的微机械变形过程是根据薄PA6韧带在低应变水平下的屈服，屈曲和弯曲以及在高应变水平下橡胶网络中存在的共价键和非共价键断裂的作用来解释的。