Thermochromic paint with three-stage colour transition effect based on thermochromic microcapsules and its crosslinking modification

IF 2.2 4区 工程技术 Q3 CHEMISTRY, APPLIED
Jingli Tang, Yichao Wang, Mengjuan He, Liqian Huang, Xueli Wang, Jianyong Yu
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引用次数: 0

Abstract

To expand the colour change range of thermochromic materials, two types of thermochromic microcapsules (TCMs) with different colour change temperatures and effects were utilised to prepare a TCMs blending system exhibiting a three-stage colour transition at temperatures ranging from 10 to 60°C. Thermochromic paints were then prepared based on this TCMs blending system using a modified waterborne polyurethane (WPU). The thermochromic properties of the TCMs blending system and the impact of crosslinking modification on the coating properties were investigated. The findings revealed that the ratio of TCMs influences the colour change effect and temperature of the blending system. With temperature variations, the colour of the TCMs blending system can reversibly transition between blue, green and yellow, offering a more vibrant thermochromic effect compared with conventional thermochromic materials. The modified WPU enabled the preparation of paint from the blending system, which was applied to fabric surfaces to create multistage thermochromic fabrics. The mechanical properties, water resistance and adhesion of the modified coating were enhanced, and the colour fastness to washing of the fabrics improved by two grades. This study has practical significance for the application of TCMs and the development of colour-changing textiles.

基于热致变色微胶囊的三段式变色涂料及其交联改性
为了扩大热致变色材料的变色范围,利用两种具有不同变色温度和效果的热致变色微胶囊(tcm)制备了一种tcm混合系统,该系统在10至60°C的温度范围内表现出三阶段的变色。在此基础上,用改性水性聚氨酯(WPU)制备了热致变色涂料。研究了中草药共混体系的热致变色性能以及交联改性对涂层性能的影响。结果表明,中药材的配比对配色系统的变色效果和温度有影响。随着温度的变化,tcm混合系统的颜色可以在蓝色、绿色和黄色之间可逆地转换,与传统的热致变色材料相比,提供了更有活力的热致变色效果。改性后的WPU能够从混合系统中制备油漆,并将其应用于织物表面,以创建多级热致变色织物。改性后的涂层的机械性能、耐水性和附着力都得到了提高,织物的耐洗色牢度提高了两个等级。本研究对中药的应用和变色纺织品的开发具有现实意义。
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
Coloration Technology
Coloration Technology 工程技术-材料科学:纺织
CiteScore
3.60
自引率
11.10%
发文量
67
审稿时长
4 months
期刊介绍: The primary mission of Coloration Technology is to promote innovation and fundamental understanding in the science and technology of coloured materials by providing a medium for communication of peer-reviewed research papers of the highest quality. It is internationally recognised as a vehicle for the publication of theoretical and technological papers on the subjects allied to all aspects of coloration. Regular sections in the journal include reviews, original research and reports, feature articles, short communications and book reviews.
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