Smart multifunctional elastomeric nanocomposite materials containing graphene nanoplatelets

Smart Materials in Manufacturing Pub Date : 2023-01-01 DOI:10.1016/j.smmf.2022.100006

Qingshi Meng , Guoji Guo , Xuan Qin , Yewei Zhang , Xiangming Wang , Liqun Zhang

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引用次数: 2

Abstract

Pristine polyurea elastomers are usually limited by insufficient strength and lack of functionality. Smart, multifunctional and mechanically resilient nanocomposites were manufactured in this study by compounding functionalized graphene nanoplatelets (F-GNPs) with polyurea via in situ polymerization. This was followed by investigation of the mechanical properties, resistance to chemical media, electrical conductivity and sensing performance of the nanocomposites. A nanocomposite at 0.2 wt% of F-GNPs exhibited improvements in tensile strength (60.7%) and elongation (92.1%) as well as obviously enhanced impact performance. The nanocomposite was then investigated as a multifunctional sensor, which exhibited high stretchability with a large workable strain range (5%) and good cyclic stability (9100 cycles). As a temperature sensor, the nanocomposite demonstrated high repeatability and stability in response to cyclic changes from −20 °C to 110 °C. Its self-sensing capability made possible detecting and tracking its own damage at varying impact levels.

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含石墨烯纳米片的智能多功能弹性体纳米复合材料

原始聚脲弹性体通常受到强度不足和缺乏功能性的限制。本研究通过原位聚合将功能化石墨烯纳米片（F-GNPs）与聚脲复合，制备了智能、多功能和机械弹性的纳米复合材料。随后对纳米复合材料的力学性能、耐化学介质性、导电性和传感性能进行了研究。0.2纳米复合材料wt%的F-GNP表现出拉伸强度（60.7%）和伸长率（92.1%）的提高以及冲击性能的明显增强。然后将纳米复合材料作为一种多功能传感器进行了研究，其表现出高拉伸性、大的可操作应变范围（5%）和良好的循环稳定性（9100次循环）。作为一种温度传感器，纳米复合材料在−20的循环变化中表现出较高的可重复性和稳定性°C至110°C。它的自我感应能力使其能够在不同的冲击水平下检测和跟踪自身的损伤。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Smart Materials in Manufacturing

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