On the relation between the strength and the plasticity of polymers

详细

It is shown that the elongation to failure δ and ultimate tensile strength σ_u in polymers are related as σ_u(1 + δ) = s_u = const at the temperatures of non-Hookean entropy viscoelasticity. Different drawing from different initial states brings the structure of polymer to the limiting uniaxial structure with the same true stress of breaking carbon chains s_u.