Effect of strain rate on the behavior of three-dimensional polymers of oligoesteracrylates under the conditions of the uniaxial elongation

For three-dimensional polymers based on the dimethacryloil derivatives adipic and sebasinoil acids and dicarbonyloxyethylene we have established the influence of the deformation velocity (V(epsilon)) on their behaviour under the conditions of the uniaxial elongation. With the increase of V(epsilon) up to a distinct value of V(epsilon l), the ultimate stress sigma(m) for of the polymers grows, but at V(epsilon) > V(epsilon 1) the value of sigma(m) decreases. This phenomenon is explained. With the rise of V(epsilon), the module of elasticity E(1) increases and the curves sigma(epsilon) are shifted to the left along the epsilon axis. The change of the character of the structural organization of three-dimensional polymers in the deformation process of their samples was established.