Fast-curing anaerobic plane sealant and initiator composition and preparation method

Abstract

The invention relates to a kind of anaerobic plane sealant with the effect of improving the curing speed on aluminum and aluminum alloy materials and a preparation method thereof. It mainly provides a new way to increase the curing speed of anaerobic plane sealants on aluminum and aluminum alloys without affecting storage stability. It is mainly formed by adding an appropriate amount of water and dimethyl sulfoxide to the anaerobic curing sealant containing urethane methacrylate prepolymer, free radical polymerizable monomer, organic peroxide, accelerator and stabilizer. preparation. The preparation method provided by the invention is simple and convenient, has good storage stability, and can still have a fast and good bonding effect on aluminum and aluminum alloys in a low-humidity environment.

Description

technical field

[0001] The invention relates to an anaerobic curing planar sealant and an initiator composition that has good adhesion to aluminum (aluminum alloy), has the advantages of increased curing speed, good storage stability, and forms a tough adhesive layer after curing, and is used in the automobile industry, etc. Field aluminum (aluminum alloy) flange surface sealing. Background technique

[0002] Anaerobic flat sealant is mainly used for sealing between flange faces with small gaps. Compared with silicone flat sealant, it has better solvent resistance, higher strength and thus can withstand greater pressure. In the presence of oxygen, anaerobic adhesives do not undergo polymerization and remain liquid due to the inhibition of oxygen. When the anaerobic adhesive existing between the two parts is bonded together, the contact area between the glue and oxygen becomes smaller and smaller, and the dissolved oxygen content in the glue becomes smaller and smaller, and ...

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