Red phosphorus/polyimide covalent organic framework composite material with excellent flame retardant property and preparation method of red phosphorus/polyimide covalent organic framework composite material

The invention provides a red phosphorus/polyimide covalent organic framework composite material with excellent flame retardant property and a preparation method thereof. The red phosphorus is improvedby utilizing the unique porous structure of the polyimide covalent organic framework material, and the interior of the red phosphorus-loaded porous polyimide covalent organic framework material is coated. The red phosphorus/polyimide covalent organic framework composite material has excellent flame retardant property, can be used as a flame retardant modified polymer organic material, does not generate molten drops in the combustion process, and has obviously higher flame retardant effect than pure red phosphorus. Furthermore, a feasible way is provided for preparing the red phosphorus flame-retardant material, and the preparation method is high in repeatability and simple in process. 本发明提供了一种阻燃性能优异的红磷/聚酰亚胺类共价有机框架复合材料及其制备方法。本发明利用的聚酰亚胺类共价有机框架材料独特的多孔结构对红磷进行改进，将红磷负载多孔的聚酰亚胺类共价有机框架材料内部进行包覆。所述红磷/聚酰亚胺类共价有机框架复合材料具有优异的阻燃性