Moisture-curable anaerobic adhesive and preparation method thereof

The invention relates to a moisture-curable anaerobic adhesive and a preparation method thereof. According to the present invention, when a metal material is adhered, the closed anoxic environment ofthe adhered surface can cause a chemical reaction between the isocyanate group-containing monomer pr prepolymer in an anaerobic adhesive and the polar group on the surface of the metal substrate to generate bridging effect so as to improve the initial adhesion of the anaerobic adhesive to the metal substrate, and the(meth)acryloyloxy group contained in the anaerobic adhesive is subjected to rapidradical polymerization, and the monomer or prepolymer containing more than or equal to 2 isocyanate groups in the system can provide plasticizing effect to maintain the adhesion of the system at a high level so as to achieve the effects of curing and firm adhesion, such that the bonding strength of the anaerobic adhesive is greatly improved; and a small amount of the isocyanate group contained inthe moisture-curable anaero