Water-based aromatic polyamide emulsion, preparation method and application of water-based aromatic polyamide emulsion

The invention relates to water-based aromatic polyamide emulsion, a preparation method and the application of the water-based aromatic polyamide emulsion. The water-based aromatic polyamide emulsion is characterized by comprising 0.5 to 50 parts by mass of aromatic polyamide, 0.5 to 50 parts by mass of a water-soluble polymer and 50 to 99 parts by mass of water, wherein particles formed by the aromatic polyamide and the water-soluble polymer are dispersed in water. The water-based aromatic polyamide emulsion can be used for water-based ink, a water-based coating, an adhesive, a lithium ion battery diaphragm or a paste composition for a lithium ion battery electrode to improve resistance to high temperature, acid, alkali and a solvent, has the environment-friendly advantages of incombustibility, nontoxicity, no pollution and the like, and has higher performance in a plurality of application fields, and a preparation process is simple and convenient to operate.