Method for preparing fluorine-containing latex paint

The invention discloses a method for preparing a fluorine-containing latex paint, which comprises the following steps of: weighing 18 to 40 weight parts of water, 0.3 to 0.5 weight part of propylene glycol, dispersing at a rotating speed of 400 to 600r/min, adding 0.1 to 0.3 part of wetting agent, 0.3 to 0.5 part of dispersing agent and 0.2 to 0.3 part of defoaming agent, regulating the rotating speed to be 1,200-1,500r/min, adding 28 to 35 parts of filler and dispersing for 20 to 30 minutes; regulating the rotating speed to be 800-1,200r/min, and sanding for 30 to 60 minutes; cleaning size by using 6 to 10 parts of water; and adding 0.1 to 0.3 part of defoaming agent and 1.2 to 1.5 parts of film forming aid at a rotating speed of 400 to 600r/min, stirring for 10 to 20 minutes, adding 25 to 40 parts of emulsion and 3 to 15 parts of fluoropolymer emulsion, regulating the pH to be 7-9 by using ammonia water or multifunctional aid AMP-95, adding 0.2 to 0.7 part of thickening agent and 0.6 to 1.2 parts of preserv