A facile method to fabricate polyurethane based graphene foams/ epoxy/carbon nanotubes composite for electro-active shape memory application
A facile method to fabricate polyurethane based graphene foams/ epoxy/carbon nanotubes composite for electro-active shape memory application
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一种简便的方法来制造用于电活性形状记忆应用的聚氨酯基石墨烯泡沫/环氧树脂/碳纳米管复合材料
DOI：
10.1016/j.compositesa.2016.10.021
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发表时间：
2016
影响因子：
8.7
通讯作者：
Liu Hezhou
中科院分区：
文献类型：
--
作者：
Zhou Jie;Li Hua;Liu Weiwei;Dugnani Roberto;Tian Ran;Xue Wenchao;Chen Yujie;Guo Yiping;Duan Huanan;Liu Hezhou
形状记忆聚合物(SMPS)因其能在外界刺激下变形并固定为临时形状，并可恢复其永久的原始形状而受到工业界和学术界的广泛关注。在这项工作中，我们提出了一种新型的形状记忆三维(3D)聚氨酯(PU)石墨烯泡沫(PGF)/环氧/碳纳米管(PGEC)复合材料。该复合材料以环氧树脂(EP)为基质，以低密度(约0.030微克/厘米~3)、高渗透性、商用的PU海绵为支架，以石墨烯和碳纳米管(CNT)为导电网络。该材料具有良好的导电性，在约1.43V/mm−1的电场作用下，可在150V的S范围内触发。
Shape memory polymers (SMPs) have attracted the attention of both the industry and academia due to the fact that they can deform and fix into a temporary shape, and recover their permanent, original shape upon exposure to an external stimulus. In this work we propose a novel, shape memory three-dimensional (3D) polyurethane-based (PU) graphene foam (PGF)/epoxy/carbon nanotubes (PGEC) composite. The composite uses epoxy resin (EP) as matrix, a low-density (about 0.030 g/cm3), highly porous, commercially available PU sponges as the scaffold, and graphene and carbon nanotubes (CNTs) as conductive network. The proposed PGEC composites demonstrate excellent conductivity and could be triggered within 150 s by applying an electric field of approximately 1.43 V mm−1. The proposed SMP composite material is simple and fast to manufacture, operational, and low cost.