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首页> 美国卫生研究院文献>Polymers >Thermally Healable and Recyclable Graphene-Nanoplate/Epoxy Composites Via an In-Situ Diels-Alder Reaction on the Graphene-Nanoplate Surface
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Thermally Healable and Recyclable Graphene-Nanoplate/Epoxy Composites Via an In-Situ Diels-Alder Reaction on the Graphene-Nanoplate Surface

机译：通过石墨烯-纳米板表面上的原位Diels-Alder反应可热修复和回收利用的石墨烯-纳米板/环氧树脂复合材料

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摘要

In this work, thermally healable graphene-nanoplate/epoxy (GNP/EP) nanocomposites were investigated. GNPs were used as reinforcement and crosslinking platforms for the diglycidyl ether of bisphenol A-based epoxy resin (DGEBA) through the Diels-Alder (DA) reaction with furfurylamine (FA). The GNPs and FA could then be used as a derivative of diene and dienophile in the DA reaction. It was expected that the combination of GNPs and FA in DGEBA would produce composites based on the interfacial properties of the components. We confirmed the DA reaction of GNPs and FA at the interface during curing of the GNP/EP nanocomposites. This procedure is simple and solvent-free. DA and retro DA reactions of the obtained composites were demonstrated, and the thermal healing properties were evaluated. The behavior of the GNP/EP nanocomposites in the DA reaction is similar to that of thermosetting polymers at low temperatures due to crosslinking by the DA reaction, and the nanocomposites can be recycled by a retro DA reaction at high temperatures.
机译：在这项工作中，研究了可热修复的石墨烯-纳米板/环氧树脂（GNP / EP）纳米复合材料。 GNP通过与糠胺（FA）的Diels-Alder（DA）反应用作双酚A基环氧树脂（DGEBA）的二缩水甘油醚的增强和交联平台。然后，GNP和FA可用作DA反应中的二烯和亲二烯体的衍生物。可以预期，DGEBA中的GNP和FA的组合将根据组件的界面特性生产复合材料。我们证实了在固化GNP / EP纳米复合材料的过程中，界面处的GNP和FA的DA反应。此过程简单且无溶剂。证明了所得复合材料的DA和逆向DA反应，并评估了其热愈合性能。由于DA反应的交联作用，GNP / EP纳米复合材料在DA反应中的行为与低温下的热固性聚合物相似，纳米复合物可以在高温下通过逆转录DA反应进行再循环。

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