Among several self-healing approaches to improve the durability of polymer-based materials during service, the addition of thermoplastics to a thermoset matrix has emerged as a promising self-healing alternative. In this study, poly (ethylene-co-methacrylic acid) (EMAA) was added to the mid-plane of carbon fiber-epoxy composite laminates to produce a self-healing system. Composite plates were manufactured with the addition of 5 wt%, 10 wt% and 15 wt% of EMAA as related to the matrix weight in the prepreg laminate. Interlaminar shear strength (ILSS) tests, dynamic mechanical analysis (DMA), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and field-emission gun scanning electron microscopy (FEG-SEM) were employed to evaluate the self-healing effect and composite properties before and after a healing cycle. Storage modulus was found to decrease with increasing content of EMAA in the laminate. Samples with EMAA showed complete recovery of interlaminar shear strength after healing.

在改善使用过程中聚合物基材料耐久性的几种自修复方法中，向热固性基质中添加热塑性塑料已成为一种有希望的自修复方法。在这项研究中，将聚（乙烯-共-甲基丙烯酸）（EMAA）添加到碳纤维-环氧树脂复合材料层压板的中平面以产生自修复系统。相对于预浸料层压板中的基体重量，通过添加5重量％，10重量％和15重量％的EMAA来制造复合板。使用层间剪切强度（ILSS）测试，动态力学分析（DMA），傅立叶变换红外（FTIR）光谱，扫描电子显微镜（SEM）和场发射枪扫描电子显微镜（FEG-SEM）来评估自愈合周期前后的愈合效果和复合特性。发现储能模量随着层压物中EMAA含量的增加而降低。EMAA样品在愈合后显示出层间剪切强度的完全恢复。