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具有水下自修复和损伤可视化能力的微胶囊型复合材料的制备。

Fabrication of microcapsule-type composites with the capability of underwater self-healing and damage visualization.

作者信息

Feng Hengyu, Yu Fei, Zhou Yu, Li Ming, Xiao Linghan, Ao Yuhui

机构信息

College of Chemistry and Life Science, Key Laboratory of Carbon Fiber Development and Application, Advanced Institute of Materials Science, Changchun University of Technology Changchun 130012 Jilin Province People's Republic of China

出版信息

RSC Adv. 2020 Sep 11;10(56):33675-33682. doi: 10.1039/d0ra03197f. eCollection 2020 Sep 10.

DOI:10.1039/d0ra03197f
PMID:35519072
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9056752/
Abstract

Inspired by biology, underwater self-healing polymer composites with damage-healing visible agents were successfully designed and prepared. The healing agents, same as epoxy resin matrices, were encapsulated and embedded into a matrix that contained fluorescent latent curing agents. The results of investigation on healing properties revealed that the fluorescent latent curing agents and the microcapsules in the matrix play two roles. First, the matrix could be self-healed a crosslinking reaction between the amine group and epoxy resin, in which the amine group could be released from the fluorescent latent curing agents (FLCAs) after exposure to water. Second, the fluorescent dyes released under water could indicate the scratches and healing area visually. Embedding 15 mass% microcapsules and 6 mass% FLCAs in self-healing materials yielded a healing efficiency of 85.6% and the most efficient fluorescence detection. Self-healing materials can be repaired underwater and they show the location of damage, which is of great significance in applications such as water conservation engineering, environmental treatment engineering, ship engineering and ocean engineering.

摘要

受生物学启发，成功设计并制备了具有损伤愈合可见剂的水下自愈合聚合物复合材料。愈合剂与环氧树脂基体相同，被封装并嵌入到含有荧光潜伏固化剂的基体中。愈合性能研究结果表明，基体中的荧光潜伏固化剂和微胶囊起到了两个作用。首先，基体可以通过胺基与环氧树脂之间的交联反应实现自愈合，其中胺基在接触水后可从荧光潜伏固化剂（FLCAs）中释放出来。其次，在水下释放的荧光染料可以直观地指示划痕和愈合区域。在自愈合材料中嵌入15质量%的微胶囊和6质量%的FLCAs，愈合效率达到85.6%，荧光检测效率最高。自愈合材料可以在水下修复，并能显示损伤位置，这在水利工程、环境治理工程、船舶工程和海洋工程等应用中具有重要意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/ba89df4815a8/d0ra03197f-f8.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/ba89df4815a8/d0ra03197f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/5586f7e03e39/d0ra03197f-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/e93c7fa9a26d/d0ra03197f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/dad5454ced2c/d0ra03197f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/166d03dca7a6/d0ra03197f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b0ce/9056752/c20f052bbdbb/d0ra03197f-f7.jpg
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