ABSTRACT

Microcapsules with TFA or TCA healing agents with an outer poly(melamine-urea-formaldehyde) (PMUF) were successfully synthesized for the first time, according to a review of published literature. The average sizes of the microcapsules obtained were measured to be 1.7 and 2 µm for TFA/PMUF and TCA/PMUF, respectively. Both microcapsules were separately added to an epoxy-based coating formulation. To examine the self-healing properties, scanning electron microscopy images were examined at the moment that damage occurred and seven days later. A self-healing experiment showed that the more reactive PMUF/TFA microcapsules were more efficient than the PMUF/TCA microcapsules in repairing scratch damage in the coatings.

摘要

根据已发表文献的回顾，首次成功合成了具有TFA或TCA愈合剂以及外部聚三聚氰胺-脲-甲醛（PMUF）的微胶囊。对于TFA / PMUF和TCA / PMUF，测得的微胶囊的平均尺寸分​​别为1.7和2μm。将两种微胶囊分别加入基于环氧的涂料配方中。为了检查自我修复性能，在损坏发生时和7天后检查了扫描电子显微镜图像。自我修复实验表明，活性更高的PMUF / TFA微胶囊在修复涂层刮痕损伤方面比PMUF / TCA微胶囊更有效。