Fluorine-containing polymer, preparation method and application thereof, insulating slurry, insulating coating, secondary battery and electric device

The invention provides a fluorine-containing polymer, a preparation method and application thereof, insulating slurry, an insulating coating, a secondary battery and an electric device. The fluorine-containing polymer comprises a structural unit derived from a monomer as shown in a formula I and a structural unit derived from a monomer as shown in a formula II, and the molar content of the structural unit derived from the monomer as shown in the formula II is 3-8% based on the total molar number of the structural units of the fluorine-containing polymer, r1, R2 and R3 are respectively and independently selected from hydrogen, fluorine, chlorine or C1-3 alkyl containing at least one fluorine atom, R4, R5 and R6 are respectively and independently selected from hydrogen and substituted or unsubstituted C1-5 alkyl, and R7 is C1-10 alkyl containing at least one hydroxyl group. The fluorine-containing polymer provided by the invention can improve the fluidity and sedimentation resistance of the insulating slurry, o