Investigation into Tensile Mechanical Propertiesof PUR Foam Plastics

The tensile mechanical properties of PUR foam plastics as well as its strain rate effect and temperature effect were investigated by means of tensile experiments. The experimental results show that the strain rate effect of PUR foam plastics is not obvious, but its temperature effect is quite obvious under tensile loading. At the same time, the PUR foam plastics has some brittle features and its stress-strain curve is obviously nonlinear characteristics when it is deformed. In addition, the theoretical prediction of modulus and strength for PUR foam plastics were given, and the predicted results are basiclly in agreement with experimental ones.