Self-healing polymers are currently receiving widespread attention as a strategy to extend the product's lifetime. Thermosetting polymers, particularly epoxies, are the most studied materials due to their uses as coatings, adhesives, or structural elements, among others. Scarcely noticed studies have reported the inherent healing capacity in arrested cracks of unmodified epoxy resins. Here, we present that healing can also occur in non-arrested cracks and its mechanism is a combination of an already described physical phenomenon and a chemical phenomenon, due to the formation of reversible hydrogen bonds. Here, we exemplify the need for fixing a set of standard testing conditions and propose they require complete and non-arrested cracks to do so.

自愈聚合物作为延长产品寿命的一种策略，目前正受到广泛关注。热固性聚合物（尤其是环氧树脂）是研究最多的材料，因为它们可用作涂料，粘合剂或结构元件等。鲜为人知的研究报告了未改性环氧树脂的滞留裂缝固有的愈合能力。在这里，我们提出愈合也可以发生在非滞留裂纹中，并且由于可逆氢键的形成，其机理是已经描述的物理现象和化学现象的结合。在这里，我们举例说明了固定一组标准测试条件的必要性，并建议它们需要完整且无阻裂的裂纹。