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首页> 外文期刊>ACS applied materials & interfaces >Fiber with Butterfly Wings: Creating Colored Carbon Fibers with Increased Strength, Adhesion, and Reversible Malleability
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Fiber with Butterfly Wings: Creating Colored Carbon Fibers with Increased Strength, Adhesion, and Reversible Malleability

机译：纤维带蝴蝶翅膀：用较高的强度，粘附和可逆的延伸性产生彩色碳纤维

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摘要

Colored and color-changing materials are central to perception and interaction in nature and have been exploited in an array of modern technologies such as sensors, visual displays, and smart materials. Attempts to introduce color into carbon fiber materials have been limited by deleterious impacts on fiber properties, and the extension of colored fibers toward “smart composites” remains in its infancy. We present carbon fibers incorporating structural color, similar to that observed on the surface of soap bubbles and various insects and birds, by modifying the fiber surface through in situ polymerization grafting. When dry, the treated fibers exhibit a striking blue color, but when exposed to a volatile solvent, a cascade of colors across the visible light region is observed as the film first swells and then shrinks as the solvent evaporates. The treated fibers not only possess a unique color and color-changing ability but also can be reversibly formed into complex shapes and bear significant loads even without being encased in a supporting polymer. The tensile strength of treated fibers shows a statistically significant increase (+12%), and evaluation of the fiber-to-matrix adhesion of these polymers to an epoxy resin shows more than 300% improvement over control fibers. This approach creates a new platform for the multifaceted advance of smart composites.
机译：彩色和变色的材料是感知和互动的核心性质，并且已被利用在一系列现代技术，如传感器，视觉显示器和智能材料。将颜色引入碳纤维材料的尝试受到对纤维性能的有害影响的限制，并且朝向“智能复合材料”的彩色纤维的延伸仍然存在于其初期。我们通过在原位聚合接枝中改变纤维表面，呈现掺入结构颜色的碳纤维，类似于在肥皂泡和各种昆虫和鸟类上观察到的碳纤维。当干燥时，处理过的纤维表现出撞击的蓝色，但是当暴露于挥发性溶剂时，随着膜首先膨胀，随着溶剂蒸发而缩小，观察到可见光区域上的颜色级联。经处理的纤维不仅具有独特的颜色和变色能力，而且还可以可逆地形成复杂的形状并耐受显着的载荷，即使在不被包裹在支撑聚合物中。处理纤维的拉伸强度显示出统计学上显着的增加（+ 12％），并评价这些聚合物与环氧树脂的纤维 - 基质粘附性显示出超过300％的对照纤维的改善。这种方法为智能复合材料的多方面进展创建了一个新的平台。

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