仿生自愈合微胶囊的制备和研究  

Study on Biological Modeling Self-healing Microcapsules

作　　者：李运涛[1] 李然[1] 何静[1] 王志超[1] 王慧霞[1] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《中国塑料》2011年第7期58-62,共5页China Plastics

摘　　要：采用原位聚合法合成了以聚脲甲醛为胶囊壁、环氧树脂为囊芯的微胶囊，并对聚脲甲醛包覆环氧树脂/正丁基缩水甘油醚的微胶囊的制备工艺进行了研究。结果表明，微胶囊制备的最佳工艺条件为：预聚体的pH值在9～10之间，预聚体的反应温度控制在60～65℃之间，预聚体反应时间控制在1h；微胶囊聚合反应的pH值控制在2左右，以十二烷基苯磺酸钠作为表面活性剂，聚合反应温度控制50～60℃之间，聚合反应时间控制在2h。所制备的微胶囊包覆完全，表面致密。Self-healing microcapsules were synthesized by encapsulating epoxy resm /butyt glyclayl ether within the poly （urea-formaldehyde） coating via in-situ polymerization. The optimum reaction conditions for the prepolymer were to control the pH value at 9- 10, the reaction temperature at 60-65℃, and the reaction time at 1 h. The optimum conditions of the in-situ polymerization were the pH value of 2, the reaction temperature of 50～60℃ and the reaction time of 2 h with sodium dodecyl beneze sulfonate as the surfactant. The as-prepared microcapsules exhibited complete encapsulation with compact and tightly united surface.

关 键 词：微胶囊 聚脲甲醛 环氧树脂 正丁基缩水甘油醚 合成 自愈合 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]