High-Toughness Epoxy-Based Composites with a Bioinspired Three-Dimensional Interconnected Skeleton for Photothermal Conversion Applications

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-12-20 DOI:10.1021/acs.nanolett.4c04324

Zhiyan Zhang, Yufei Wang, Zhengzhi Mu, Wenda Song, Shuang Zhang, Jialve Sun, Hexuan Yu, Hanliang Ding, Shichao Niu, Zhiwu Han, Luquan Ren

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Abstract

Advanced epoxy (EP)-based composites, retaining excellent physical and mechanical properties, are in demand in many high-end devices, such as fan blades of aeroengines. However, the irreconcilable conflict between stiffness and toughness within an EP often leads to catastrophic brittle fracture. Herein, inspired by the medulla skeleton of wing feathers of Milvus migrans, bioinspired EP-based composites (BECs) were obtained via integrating functionalized three-dimensional interconnected skeleton into a brittle EP. The BEC’s fracture toughness is enhanced by 111.43%. Significantly, the maximum fracture toughness (K_JC) of the BEC is 3.5 times greater than that of the EP. Moreover, under 100 mW/cm² irradiation, the BEC can be heated from room temperature to 90 °C in 5 min, exhibiting excellent photothermal conversion capacity. The BEC expands the possible applications of conventional EP-based composites in engineering materials and energy management fields. The proposed bioinspired strategy provides a new avenue to design novel EP-based composites with strong mechanical properties and multifunction integration.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.