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Bending behavior of shape memory polymer based laminates

机译：形状记忆聚合物基层压板的弯曲行为

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摘要

Shape memory polymers (SMP) are smart materials was characterized by the recoverability of shape memory effect, but its mechanical property such as the strength is low. In this study, for industrial applications, a carbon fiber fabric reinforced shape memory polymer was developed. Four kinds of specimens with different laminations of carbon fiber fabric and shape memory polymer sheet were prepared. The bending recoverability was investigated and compared between the SMP sheet substance and the developed SMP based laminates. Both of the materials were loaded and then unloaded repeatedly above the T_g. The bending recoverability characterized by the bending angle, and the influence of weight of specimen was examined. Results show that the SMP based laminates developed have good shape recoverability, and their bending recovery ratio was larger than that of the SMP sheet at any recovery time. Furthermore, the bending recovery ratio was predicted with an analysis model and its result was compared with experiment values. The good agreement between the experiment and analysis suggests that the proposed analysis model is effective for the prediction of the bending recovery of SMP based laminates.
机译：形状记忆聚合物（SMP）是智能材料，其特征在于形状记忆效应的可恢复性，但其机械性能（例如强度）较低。在这项研究中，针对工业应用，开发了碳纤维织物增强的形状记忆聚合物。制备了四种具有不同碳纤维织物和形状记忆聚合物片层合的样品。研究了SMP片材与开发的基于SMP的层压板之间的弯曲恢复能力，并进行了比较。两种材料都被装载，然后在T_g上方反复卸载。研究了以弯曲角度为特征的弯曲回复性，以及试样重量的影响。结果表明，所开发的基于SMP的层压板具有良好的形状恢复性，并且在任何恢复时间下其弯曲恢复率均大于SMP片材的弯曲恢复率。此外，使用分析模型预测弯曲回复率，并将其结果与实验值进行比较。实验与分析之间的良好一致性表明，所提出的分析模型可有效预测基于SMP的层压板的弯曲回复率。

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