Reversible Thermochromic Organosilicon Fibers Based on TiO2@AgI Composites: Preparation, Properties, and Potential Applications.

IF 27.4 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Lei Shi,Jiao Wang,Jinshan Xie,Zhaoqin Li,Tongyu Chen,Yu Che,Manman Zhao,Zhanxiong Li
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引用次数: 0

Abstract

The application of reversible thermochromic fibers (RTFs) is expanding from the smart wearable field toward industrial temperature detection and safety warning; however, most RTFs suffer from low color change temperature thresholds and poor thermal stability, which restrict their applications in medium and high-temperature places (>100 °C). Currently, overheating of equipment is a key factor that causes safety accidents, and the development of reliable visualized temperature warning materials is of great practical significance for accident prevention. To address these issues, TiO2@AgI is blended with a ternary organosilicon oil spinning solution via a high-temperature air-induced crosslinking method to obtain a reversible thermochromic organosilicon fiber (TSiF) suitable for use in medium and high-temperature environments owing to its thermal stability. Among them, TiO₂@AgI1.1@SiF-2 has the best performance, showing a significant white to bright yellow color change (color difference ΔE = 25.72) at 135.4 °C. It still possesses the thermochromic performance after 170 cycles and excellent mechanical properties (tensile strength of 9.89-11.33 MPa, no decay in 500 cycles), significant biocompatibility and antimicrobial ability, which fully meets the requirements for medium and high-temperature warning. Thus, this study provides a new idea for fabricating RTFs that can be used for medium and high-temperature warning.
基于TiO2@AgI复合材料的可逆热致变色有机硅纤维:制备、性能和潜在应用。
可逆热致变色纤维(rtf)的应用正从智能穿戴领域向工业温度检测和安全预警领域拓展;然而,大多数rtf的变色温度阈值低,热稳定性差,这限制了它们在中高温场所(bb0 - 100°C)的应用。当前,设备过热是引发安全事故的关键因素,开发可靠的可视化温度预警材料对事故预防具有重要的现实意义。为了解决这些问题,TiO2@AgI通过高温空气诱导交联方法与三元有机硅油纺丝溶液混合,得到一种可逆的热致变色有机硅纤维(TSiF),由于其热稳定性,适合在中高温环境中使用。其中,TiO 2 @AgI1.1@SiF-2性能最好,在135.4℃时表现出明显的白色到明黄色的变化(色差ΔE = 25.72)。170次循环后仍具有热致变色性能,优异的力学性能(抗拉强度9.89-11.33 MPa, 500次循环不衰减),显著的生物相容性和抗菌能力,完全满足中高温警示要求。因此,本研究为制造可用于中高温预警的rtf提供了一种新的思路。
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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来源期刊
Advanced Materials
Advanced Materials 工程技术-材料科学:综合
CiteScore
43.00
自引率
4.10%
发文量
2182
审稿时长
2 months
期刊介绍: Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.
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