Repairability of rubber-backed vitrimer composites under variations of impact damage

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-09-21 DOI:10.1016/j.coco.2024.102102

Jun Young Choi , Ji Ho Jeon , Sung-Hoon Ahn

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Abstract

This study evaluates the effectiveness of rapid heat pressing repair on composites made of vitrimer matrix, a reshapable and recyclable polymer, subjected to varying degrees of impact damage. Two types of composites were fabricated for impact testing: randomly oriented glass fiber reinforced vitrimers (GFRV) and woven carbon fiber reinforced vitrimers (CFRV). Izod pendulum impact tests were conducted on samples along both the thickness and width. Impacts with varying energy levels were applied to induce different degrees of damage, allowing for the assessment of impact strength degradation and repair effectiveness. Additionally, a rubber adhesive layer was applied to the back of composites to quantitatively measure the increase in energy absorption and its effect on repair performance. The findings demonstrate the potential of rapid heat pressing repair in restoring the mechanical integrity of vitrimer composites and highlight the influence of a rubber adhesive layer in enhancing energy absorption and repair efficacy.

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橡胶支撑玻璃纤维复合材料在不同冲击损伤下的可修复性

本研究评估了快速热压修复对玻璃纤维基体复合材料的有效性，玻璃纤维基体是一种可重塑和可回收的聚合物，受到不同程度的冲击破坏。为进行冲击测试，制作了两种类型的复合材料：随机取向玻璃纤维增强玻璃纤维（GFRV）和编织碳纤维增强玻璃纤维（CFRV）。对样品的厚度和宽度都进行了伊佐德摆锤冲击试验。采用不同能量水平的冲击来诱发不同程度的损坏，从而评估冲击强度退化和修复效果。此外，还在复合材料背面涂上一层橡胶粘合剂，以定量测量能量吸收的增加及其对修复性能的影响。研究结果证明了快速热压修复在恢复玻璃纤维复合材料机械完整性方面的潜力，并强调了橡胶粘合剂层在增强能量吸收和修复效果方面的影响。

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

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.