Thread locking anaerobic adhesive and preparation method thereof

Abstract

The invention discloses a thread locking anaerobic adhesive and a preparation method thereof, and belongs to the technical field of adhesive preparation. The invention aims to solve the problems thatthe anaerobic adhesive is slowly cured at room temperature and is difficult to cure at low temperature or when an inert material is bonded. The adhesive comprises an anaerobic curing adhesive solutionand an accelerating base agent, wherein the anaerobic curing adhesive solution is mainly prepared from the following components in parts by weight: 100 parts of an anaerobic acrylate monomer, 0.01-10parts of an accelerant, 0.01-10 parts of an auxiliary accelerant and 1-10 parts of an initiator; wherein the promoting base agent is mainly prepared from the following components in parts by weight:0.01 to 5 parts of ferrocene compound, 0 to 5 parts of benzoyl hydrazine compound and 100 parts of volatile solvent. The adhesive is used for locking the anaerobic adhesive through the threads.

Description

technical field [0001] The invention belongs to the technical field of adhesive preparation, and in particular relates to a thread locking anaerobic adhesive and a preparation method thereof. Background technique [0002] Anaerobic adhesives are acrylic adhesives with anaerobic curing properties. Oxygen has an inhibitory effect on the polymerization of anaerobic adhesives. When exposed to air (oxygen), anaerobic adhesives can maintain a stable liquid state. When bonding metal materials, due to the isolation of air (oxygen), anaerobic adhesives can undergo free radical polymerization under the catalysis of peroxide initiators and metal ions such as copper and iron on the surface of the material, thereby curing. Due to the advantages of easy use, low toxicity, adjustable viscosity, and room temperature curing, anaerobic adhesives are widely used in the fastening and anti-loosening of bolts and nuts, the fixing of mutually embedded shafts, and the sealing of threaded pipe join...

AI Technical Summary

Problems solved by technology

For example, in the patent US 3,855,040, ferrocene, ferrocene-containing polymers, and ferrocene derivatives are used as accelerators for anaerobic adhesive components, and a strong acid with pKa<3 is used to promote the release of ferrocene Active iron ions to increase the curing speed of anaerobic adhesives. The treatment primer of this invention can significantly increase the curing speed, but due to the introduction of strong acid into the system, it will cause surface corrosion to some bonding materials, which is not conducive to the treatment of magnesium alloys. , aluminum alloy and other corrosive metal materials for bonding

In order to reduce the corrosiveness of strong acids, the patent US 8,519,023 uses saccharin, saccharin derivatives or o-sulfonylbenzimide derivatives to cooperate with a catalyst containing ferrocene to increase the curing speed of anaerobic adhesives, but the curing efficiency is still low. to be further improved

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