基于介孔材料的微脉管型自修复聚合物复合材料

自修复能够延长聚合物及其复合材料的使用寿命，通过将愈合剂包裹于微胶囊中，在材料损伤时释放，使微裂缝自修复。微胶囊类型和愈合剂是研究自修复材料的重点所在。以三维六方结构、多尺度孔径且具有内部互通孔道的无机介孔材料或有机多孔聚合物作为包裹材料能够仿生人体微脉管作用从而控制愈合剂释放，使自修复过程多次进行。基于介孔材料的内部互通孔道和较大孔容，探索介孔材料作为愈合剂的载体用于聚合物及其复合材料的多次自修复，研究无机介孔材料和有机多孔聚合物材料类型、结构对愈合剂吸附和释放性能的影响，研究多孔材料在聚合物基体中的混溶性和分散性，提高介孔材料对愈合剂的包裹率，得到在聚合物基体材料中具有最佳混溶性和分散性的介孔材料类型和结构，在此基础上重点研究装载有愈合剂的介孔材料在聚合物基体中的多次自愈合行为，认识介孔材料作为愈合剂载体对聚合物进行多次自愈合的规律，为聚合物及其复合材料服役期间多次自愈合提供新方法。

Self-repair can prolong working life for polymer and composites.The healing agent is sealed into the microcapsule and released when the material is damaged, which made the microcrack self-healed. In this method, microcapsule type and healing agent are the keys for the self-repair materials. Three-dimensional hexagonal inorganic mesoporous materials and organic porous polymers with interlinked channel structure as a shell material for a microcapsule could simulate human microvascules function, which control healing agent release resulting in self-repair repeated. Based on its interlinked channel and big pore valume, the mesoporous materials are designed as a vehicle for healing agent in order to repair microcracks of polymer and composite many times. It is investigated that the types and structures of the inorganic mesoporous materials and porous organic polymers on the absorbtion and release of the healing agent, along with the miscibility and dispersibility of the mesoporous materials in the polymer matrix.It is expected that the mesoporous materials with the highest capacity, the best miscibility and dispersibility in the polymer matrix are obtained. Based on this,the repeated self-repair haviours of the mesoporous materials loading the healing agent dispersed in the polymer matrix are highlighted. In the way, the function of the mesoporous materials in the polymer matrix is know well, and a new method for self -repairing polymer and composite during working time is proposed.