On the mechanics of elastomers undergoing scission and cross-linking
On the mechanics of elastomers undergoing scission and cross-linking
复制标题
DOI：
10.1007/s12572-010-0004-9
复制
发表时间：
2009-09-01
影响因子：
0.9
通讯作者：
Wineman, Alan
中科院分区：
文献类型：
--
作者：
Wineman, Alan
弹性材料的热机械响应通常用非线性热弹性本构理论来表示。这一理论固有的假设是，在变形过程中不会发生大分子微结构的变化。然而，通过大分子网络连接的断裂和交联会改变聚合物的微观结构。本文综述了已发展起来的变形本构理论和热致断裂与交联本构理论。然后总结了它们在表征裂解和交联对聚合物力学响应的影响方面的应用，如力学性质的改变、诱导的各向异性、永久变形、残余应力、本构响应和结构响应的单调性的丧失以及局部高变形的边界层的演化。
The thermo-mechanical response of elastomeric materials is usually represented by the constitutive theory for non-linear thermo-elasticity. Inherent in this theory is the assumption that no change in the macromolecular microstructure occurs during deformation. However, the microstructure can be changed by the scission and cross-linking of macromolecular network junctions. This paper reviews the constitutive theories for deformation and thermally induced scission and cross-linking that have been developed. It then summarizes their use in characterizing the implications of scission and cross-linking for the mechanical response of polymers, such as the alteration of mechanical properties, induced anisotropy, permanent set, residual stresses, loss of monotonicity of constitutive and structural response and evolution of boundary layers of locally high deformation.