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The effects of carbon nanotubes on electroactive shape-memory behaviors of hydro-epoxy/carbon black composite

机译：碳纳米管对水-环氧/炭黑复合材料电活性形状记忆行为的影响

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摘要

The objective of this work is to characterize the effect of multi-walled carbon nanotubes (MWCNTs) on the thermomechanical, electrical and shape-memory properties of hydro-epoxy/carbon black (CB) composite. The shape-memory hydro-epoxy composite is fabricated by adding MWCNTs and CB into shape-memory hydro-epoxy resin. The total amount of the fillers fixed at 1.9wt%, five different composites are produced by varying the amount of MWCNTs between 0 and 0.8wt% and the amount of CB between 1.1 and 1.9wt%. The thermomechanical properties and shape-memory performance of the composites are studied. These results indicate that the glass transition temperature (Tg) and the storage modulus of the composites increases at first and then decreases as MWCNTs content increases. The shape recovery time decreases at first and then increases slightly as MWCNTs content increases. The composite presents good shape-memory behavior, and the shape recovery ratio is around 100%. Due to the synergic effect of CB and MWCNTs, the volume electrical resistivity of the composite could decrease by adding a small amount of MWCNTs.
机译：这项工作的目的是表征多壁碳纳米管（MWCNT）对水-环氧/炭黑（CB）复合材料的热机械，电气和形状记忆性能的影响。通过将MWCNTs和CB添加到形状记忆水基环氧树脂中制备形状记忆水基环氧树脂复合材料。填充剂总量固定为1.9wt％，通过在0至0.8wt％之间改变MWCNT的量以及在1.1至1.9wt％之间改变CB的量来生产五种不同的复合材料。研究了复合材料的热机械性能和形状记忆性能。这些结果表明，随着MWCNTs含量的增加，复合材料的玻璃化转变温度（Tg）和储能模量首先增加，然后降低。形状恢复时间首先减少，然后随着MWCNTs含量的增加而略微增加。该复合材料具有良好的形状记忆性能，形状恢复率约为100％。由于CB和MWCNT的协同作用，通过添加少量MWCNT可以降低复合材料的体积电阻率。

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