Fiber impregnation liquid for improving bonding effect between nylon fiber and rubber and preparation method of fiber impregnation liquid

The invention provides a fiber impregnation liquid for improving the bonding effect between nylon fiber and rubber, which is prepared by mixing a plurality of raw materials, and the raw materials comprise 5-10 parts by mass of glycidyl ether, 1-3 parts by mass of dopamine derivative, 2-6 parts by mass of diamine, 100-150 parts by mass of water and 100 parts by mass of rubber latex. The invention also provides a preparation method of the fiber impregnation liquid. The fiber impregnation liquid can be evenly attached to the surfaces of nylon fibers, the bonding performance between the nylon fibers and rubber is enhanced, the main raw materials are environmentally friendly and non-toxic, pollution of traditional RFL fiber impregnation liquid to the human body and the environment is avoided, and the preparation and impregnation processes of the fiber impregnation liquid are simple and controllable; and the bonding strength between the obtained nylon fiber and rubber is close to the level of the traditional RFL im