自修复用微胶囊的制备及在复合材料中的应用

Preparation and application of self-healing microcapsule for composites

制备了复合材料自修复用微胶囊,通过电镜分析对制备工艺进行了研究,采用红外光谱对微胶囊的结构进行了表征,并将微胶囊与乙烯基酯树脂体系复合,测试了体系的力学性能。结果表明,添加150 mL十二烷基苯磺酸钠(DBS)为乳化剂,壁材双环戊二烯加入量为0.222 mol时,可以形成完整的微胶囊结构。添加质量分数2%微胶囊的乙烯基酯树脂体系适合进行复合材料成型,微胶囊对复合材料强度影响不大,模量提高。

The self-healing microcapsules for composites were prepared and the preparation process was studied by electron microscopy analysis.The structure of microcapsules were characterized by infrared spectroscopy.The microcapsules and vinyl ester resin were complexed and the mechanical properties of the system were tested.The results showed that the microcapsules could form a complete structure by adding 150 mL sodium dodecylbenzenesulfonateas emulsifier and the wall material dicyclopentadiene amount 0.222 mol. The vinyl ester resin with 2wt% microcapsules was suitable for composite material molding. The microcapsule had little effect on the composite strength and the modulus was increased.