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聚双环戊二烯(PDCPD)基多孔材料继承了聚双环戊二烯本身固有的高模量等特性,近年来备受关注。PDCPD基多孔材料的制备方法主要有溶胶-凝胶结合超临界干燥法、高内相乳液法、化学诱导相分离法以及化学发泡法等。利用不同方法制备的PDCPD多孔材料往往具有不同的结构和性能特征。例如,利用化学诱导相分离法和化学发泡法制备的低孔隙率闭孔PDCPD基材料多作为结构材料;高内相乳液法制备的开孔PDCPD基复合膜可实现催化反应;溶胶-凝胶结合超临界干燥法制备的高孔隙率开孔PDCPD材料导热系数低于20 mW/(m·K),可用于保温隔热。此外,本文还展望了PDCPD基多孔材料的发展前景。
Polycyclic dicyclopentadiene (PDCPD) -based porous materials have inherited the inherent high modulus and other properties of poly dicyclopentadiene and have drawn much attention in recent years. The preparation methods of PDCPD-based porous materials include sol-gel combined with supercritical drying method, high internal phase emulsion method, chemically induced phase separation method and chemical foaming method. PDCPD porous materials prepared by different methods tend to have different structural and performance characteristics. For example, low-porosity closed-cell PDCPD-based materials prepared by chemical induced phase separation and chemical foaming are mostly used as the structural materials. The open-cell PDCPD-based composite membranes prepared by the high internal phase emulsion method can catalyze the reaction. The thermal conductivity of PDCPD with high porosity prepared by supercritical drying is less than 20 mW / (m · K), which can be used for thermal insulation. In addition, the prospect of PDCPD-based porous materials is also prospected.