Facile fabrication of polyurethane/epoxy IPNs filled graphene aerogel with improved damping, thermal and mechanical properties.
Facile fabrication of polyurethane/epoxy IPNs filled graphene aerogel with improved damping, thermal and mechanical properties.
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轻松制造填充石墨烯气凝胶的聚氨酯/环氧互穿网络，具有改进的阻尼、热性能和机械性能
DOI：
10.1039/c8ra04718a
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发表时间：
2018-07-30
期刊：
影响因子：
3.9
通讯作者：
Liu, Hezhou
中科院分区：
文献类型：
--
作者：
Zhang, Chunmei;Chen, Yujie;Li, Hua;Liu, Hezhou
本文采用一步真空填充法制备了聚氨酯(PU)/环氧(EP)互穿聚合物网络(IPN)填充石墨烯气凝胶(PEGA)。系统研究了PU含量对PEGA复合材料的减振性能、热稳定性和力学性能的影响。结果表明，石墨烯气凝胶的加入改善了PU/EP互穿聚合物网络的阻尼性能，提高了其热分解温度。力学性能测试表明，石墨烯气凝胶的加入提高了PEGA复合材料的弯曲强度、弯曲弹性模量和邵尔D硬度。PEGA复合材料的阻尼、热性能和力学性能的提高归功于石墨烯片层在IPN中的均匀分布，这得益于所用石墨烯气凝胶的三维互联多孔网络结构和纳米填料-基质界面的良好界面粘附性。PEGA复合材料有望成为未来良好的结构减振材料。
In this article, polyurethane (PU)/epoxy (EP) interpenetrating polymer networks (IPNs) filled graphene aerogel (PEGA) was facilely fabricated by a one-step vacuum-assisted filling process. Effects of PU content on damping performance, thermal stability and mechanical properties of the PEGA composites were studied systematically. Results reveal that addition of graphene aerogel improves damping properties of PU/EP IPNs and increases the thermal decomposition temperature. Mechanical tests show that flexural strength, flexural modulus and Shore D hardness of the PEGA composites also improved by incorporation of graphene aerogel. The enhanced damping, thermal and mechanical properties of PEGA composites can be attributed to the uniform distribution of graphene sheets in the IPN matrix, which benefits from the three-dimensional interconnected porous network structure of the graphene aerogel used and good interfacial adhesion at the nanofiller-matrix interface. It is expected that the PEGA composites can be used as good structural damping materials in future.
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影响因子：
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作者：
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发表时间：
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影响因子：
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