A kind of thread locking anaerobic adhesive and preparation method thereof

Abstract

A thread-locking anaerobic adhesive and a preparation method thereof belong to the technical field of adhesive preparation. The purpose of the invention is to solve the problems of slow curing of anaerobic adhesives at room temperature and difficulties in curing at low temperatures or when bonding inert materials. The present invention includes anaerobic curing glue and accelerator primer; anaerobic curing glue is mainly made of anaerobic acrylate monomer, accelerator, co-accelerator and initiator, wherein the anaerobic acrylate monomer The parts by weight are 100 parts, the parts by weight of the accelerator are 0.01 to 10 parts, the parts by weight of the accelerator are 0.01 to 10 parts, and the parts by weight of the initiator are 1 to 10 parts; the accelerator primer is mainly composed of Made from ferrocene compounds, benzohydrazide compounds and volatile solvents, wherein the parts by weight of ferrocene compounds are 0.01-5 parts, and the parts by weight of benzohydrazide compounds are 0-5 parts , The parts by weight of the volatile solvent is 100 parts. The invention is used for thread locking anaerobic adhesive.

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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