一种用于聚合物复合材料的微血管系统自愈方法。

A Microvascular System Self-Healing Approach on Polymeric Composite Materials.

作者信息

Vintila Ionut Sebastian, Ghitman Jana, Iovu Horia, Paraschiv Alexandru, Cucuruz Andreia, Mihai Dragos, Popa Ionut Florian

机构信息

National Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu Avenue, 061126 Bucharest, Romania.

Advanced Polymer Materials Group, University Politehnica of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania.

出版信息

Polymers (Basel). 2022 Jul 8;14(14):2798. doi: 10.3390/polym14142798.

DOI:10.3390/polym14142798

PMID:35890572

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9321720/

Abstract

The paper addresses the synthesis of a nano-fibre network by coaxial electrospinning, embedding the healing agent dicyclopentadiene (DCPD) in polyacrylonitrile (PAN) fibres. Compared to other encapsulation methods, the use of nano-fibres filled with healing agent have no effect on the mechanical properties of the matrix and can address a larger healing area. Additionally, carbon nanotubes were added as nanofillers to enhance the reactivity between DCPD and the epoxydic matrix. The self-healing capability of the nano-fibre network was carried out by flexural tests, at epoxy resin level and composite level. Results obtained from Fourier transform infrared (FTIR) spectrometry, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) confirmed the successful encapsulation of DCPD healing agent in PAN fibres. Flexural tests indicate that after 48 h, the epoxy resin has recovered 84% of its flexural strength while the composite material recovered 93%.

摘要

本文论述了通过同轴静电纺丝合成纳米纤维网络，将愈合剂二环戊二烯（DCPD）嵌入聚丙烯腈（PAN）纤维中的方法。与其他封装方法相比，使用填充有愈合剂的纳米纤维对基体的机械性能没有影响，并且可以处理更大的愈合区域。此外，添加了碳纳米管作为纳米填料，以增强DCPD与环氧基体之间的反应性。纳米纤维网络的自愈合能力通过在环氧树脂水平和复合材料水平上的弯曲试验来进行。从傅里叶变换红外（FTIR）光谱、热重分析（TGA）和扫描电子显微镜（SEM）获得的结果证实了DCPD愈合剂在PAN纤维中的成功封装。弯曲试验表明，48小时后，环氧树脂恢复了其弯曲强度的84%，而复合材料恢复了93%。