A Generalized High-Elasticity Model to Describe the Stress-Strain Dependence for Polyurethane Elastomers When Stretched at a Constant Rate

ABSTRACT

The stress versus strain relationships for cross-linked polyetherurethane and polybutadieneurethane elastomers were investigated on samples when simply stretched at a constant rate. Use of the generalized approach earlier developed for equilibrium strain, with related improvements taking into account the relaxation nature of the elastomers, permitted successfully describing the investigated dependences.

KEYWORDS:

• Elasticity
• elastomers
• mechanical behavior
• polyurethane
• stress–strain plots

Additional information

Funding

This work was financially supported by the Russian Foundation for Basic Research (Project 17-03–00119).