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Investigation of thermal effects accompanying tensile deformation of Shape Memory Polymer PU-SMP

机译:形状记忆聚合物PU-SMP伴随拉伸变形的热效应研究

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摘要

Experimental results of effects of thermomechanical couplings occurring in shape memory polymer subjected to tension are presented. Stress-strain curves were recorded by testing machine, while their related temperature changes were measured with infrared camera. The mechanical and thermal characteristics were used to investigate the polymer properties. Three various stages were distinguished during the deformation process. The first, elastic, is accompanied by a drop in the specimen temperature; the second, plastic, is associated with change of the material structure and the temperature increase; the third stage, related to the specimen rupture and damage mechanisms, is accompanied by the significant increase in temperature.
机译:给出了在受拉的形状记忆聚合物中发生热机械耦合作用的实验结果。用试验机记录应力-应变曲线,并用红外热像仪测量其相关的温度变化。机械和热学特性用于研究聚合物的性能。在变形过程中分为三个不同的阶段。第一个是弹性的,伴随着样品温度的下降。第二,塑料与材料结构的变化和温度的升高有关。第三阶段与标本的破裂和损坏机制有关,伴随着温度的显着升高。

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