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首页> 外文期刊>ACS applied materials & interfaces >Transparent Luminescent Hyperbranched Epoxy/Carbon Oxide Dot Nanocomposites with Outstanding Toughness and Ductility
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Transparent Luminescent Hyperbranched Epoxy/Carbon Oxide Dot Nanocomposites with Outstanding Toughness and Ductility

机译：具有出色韧性和延展性的透明发光超支化环氧/碳氧化物点纳米复合材料

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摘要

A luminescent transparent hyperbranched epoxy nanocomposite with previously unachieved outstanding toughness and elasticity has been created by incorporation of a very small amount of carbon oxide nanodots. The nanocomposites of the hyperbranched epoxy with carbon oxide dots at different dose levels (0.1, 0,5, and 1.0 wt %) have been prepared by an ex situ solution technique followed by curing with poly(amido-amine) at 100 °C. Different characterizations and evaluations of mechanical and optical properties of the nanocomposites have been performed. The toughness (area under the stress—strain curve) of the pristine system has been improved dramatically by 750% with only 0.5 wt % carbon oxide dots. The tensile strength has been enhanced from 38 to 46 MPa, whereas the elongation at break improved noticeably from 15 to 45%. Excellent adhesive strength combined with transparency and photoluminescent behavior renders these materials highly interesting as functional films in optical devices like light-emitting diodes and UV light detection systems as well as in anticounterfeiting applications.
机译：通过掺入极少量的氧化碳纳米点，可以制造出一种发光透明的超支化环氧纳米复合材料，该复合材料具有以前无法实现的出色的韧性和弹性。通过异位溶液技术，然后在100°C下用聚（酰胺胺）固化，已经制备了具有不同剂量水平（0.1、0.5和1.0重量％）的碳点的超支化环氧树脂的纳米复合材料。已经对纳米复合材料的机械和光学性质进行了不同的表征和评估。原始体系的韧性（应力-应变曲线下的面积）仅使用0.5 wt％的氧化碳点就可以显着提高750％。拉伸强度从38 MPa提高到46 MPa，而断裂伸长率从15到45％明显提高。优异的粘合强度以及透明性和光致发光性能使这些材料在光学器件（如发光二极管和UV光检测系统）以及防伪应用中作为功能膜非常受关注。

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