异氰酸酯微囊制备方法研究进展

Progresses in Preparation of Isocyanate Microcapsules

微囊的制备方法多种多样,但是由于异氰酸酯的高活性,其制备方法受到一定限制。文中对异氰酸酯进行简要概述,并从理论出发对异氰酸酯微囊制备方法作了详细介绍,主要包括界面聚合、原位聚合、Pickering乳液和溶胶凝胶法。综述了最近几年异氰酸酯微囊的相关报道,着重介绍异氰酸酯微囊的制备方法,同时也简述了其优缺点,此外还介绍一些微囊制备新技术,包括溶剂挥发/溶剂萃取法、微流体技术、超临界流体快速膨胀技术。最后对异氰酸酯微囊的制备进行了总结和展望,为异氰酸酯微囊的进一步发展提供见解。

The preparation methods of microcapsules are various, but the preparation methods of isocyanate microcapsules are limited because of their high activity. This paper started with some generalities of isocyanate and then the preparation methods of isocyanate microcapsules were introduced in detail, including interfacial polymerization, in situ polymerization, Pickering emulsion and sol-gel method. Based on the recent reports on isocyanate microcapsules, the preparation methods of isocyanate microcapsules were emphatically introduced, and briefly narrated its existent problems. Meanwhile, the paper also introduced techniques of isocyanate microcapsules, including solvent evaporation/extraction, microfluidic technology and supercritical fluid rapid expansion technology. At last, the future study of the isocyanate microcapsules was predicted, which provides insights for the further development of isocyanate microcapsules.