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Lubricating type threaded locking sealing anaerobic adhesive and preparation method

An anaerobic adhesive and thread technology, which is applied in chemical instruments and methods, adhesives, and other chemical processes, can solve the problem of unfavorable coloring of glue liquid, affect the torque strength of anaerobic adhesive for thread locking and sealing, and cannot improve the thread locking and sealing annoyance Oxygen glue lubricity and curing performance and other issues

Active Publication Date: 2016-02-03
湖北南北车新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are also some patents on thread locking and sealing anaerobic adhesives at home and abroad, such as a thread locking and sealing anaerobic adhesive mentioned in US Patent US8198345B2, although the thread locking and sealing anaerobic adhesive can be improved by adding polyethylene powder and graphite powder The purpose of the lubricity of the glue, but due to the structure of the polyethylene powder and the graphite powder itself, it will greatly affect the torque strength of the thread lock seal anaerobic adhesive after curing; in addition, the introduction of graphite with a lamellar structure will make the glue The diffusion of oxygen in the liquid produces a barrier effect, which affects the storage stability of the glue, and the black graphite also has an adverse effect on the coloring of the glue in the later stage.
Therefore, even if the technical solution disclosed in US Patent US8198345B2 is adopted, it is still impossible to improve the lubricity of the thread lock seal anaerobic adhesive without affecting the curing performance

Method used

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  • Lubricating type threaded locking sealing anaerobic adhesive and preparation method
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  • Lubricating type threaded locking sealing anaerobic adhesive and preparation method

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preparation example Construction

[0065] The embodiment of the present invention also provides a preparation method of a lubricated thread locking and sealing anaerobic adhesive, comprising the following steps:

[0066] Prepare the self-lubricating monomer first: the reaction vessel is connected in series with a water separator, a condenser, and a vacuum system; according to the different structural formulas of the self-lubricating monomer to be prepared, two methods can be used to prepare the self-lubricating monomer:

[0067] Method 1: Prepare basic raw materials: boric acid and hydroxyacrylate, wherein the molar ratio of boric acid to hydroxyacrylate is 1:3; put in boric acid and hydroxyacrylate, and then add a total amount of 0.05% to 0.5% Wt polymerization inhibitor, Stir and heat up and keep warm at 80°C to 130°C for esterification reaction, vacuumize to remove water, water vapor flows back to the water separator after passing through the condenser, collect distillate water and weigh it, when the quality ...

Embodiment 1

[0079] The lubricating type thread lock sealing anaerobic adhesive provided in this embodiment includes 20% self-lubricating monomer, 20% methacrylic epoxy resin, 50% polyethylene glycol 200 dimethacrylate, 6 % of pentaerythritol tetramethacrylate, 0.04% of 1,4-naphthoquinone (inhibitor), 0.34 of N-acetylphenylhydrazine (promoter), 2% of o-sulfonyl benzimide (promoter agent), 0.02% EDTA tetrasodium salt (metal ion chelating agent), 1.6% cumene hydroperoxide (organic peroxide initiator). Among them, the structural formula of the self-lubricating monomer is:

[0080]

[0081] The preparation process of the above lubricated thread locking and sealing anaerobic adhesive is as follows:

[0082] Preparation of self-lubricating monomer: the reaction vessel is connected in series with water separator, condenser, and vacuum system, and the basic raw materials are prepared: boric acid, hydroxyethyl methacrylate; boric acid and hydroxyethyl methacrylate are put in at a molar ratio of...

Embodiment 2

[0085] The lubricated thread lock seal anaerobic adhesive provided in this embodiment includes 30.00% self-lubricating monomer, 20.64% methacrylic epoxy resin, 45.50% triethylene glycol dimethacrylate, 0.04% of 1,4-naphthoquinone (inhibitor), 0.30 of N-acetylphenylhydrazine (accelerator), 1.50% of o-sulfonyl benzimide (co-accelerator), 0.50% of butene Diacid (promoter), 0.02% EDTA tetrasodium salt (metal ion chelating agent), 1.5% cumene hydroperoxide (organic peroxide initiator). Wherein, the self-lubricating monomer has the same structural formula as the self-lubricating monomer in Example 1.

[0086] The preparation process of the above lubricated thread locking and sealing anaerobic adhesive is as follows:

[0087] Preparation of self-lubricating monomer: the reaction vessel is connected in series with water separator, condenser, and vacuum system, and the basic raw materials are prepared: boric acid, hydroxyethyl methacrylate; boric acid and hydroxyethyl methacrylate are...

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Abstract

The present invention discloses a lubricating type threaded locking sealing anaerobic adhesive and a preparation method thereof, and relates to the field of threaded locking sealing anaerobic adhesives, wherein the anaerobic adhesive comprises 20-90% of an acrylic ester self-lubricating type monomer with boron contained on the molecular chain, 0-76% of a boron-free acrylic ester monomer, 0.02-1% of a polymerization inhibitor, 0.1-5% of an accelerator, 0.3-5% of an auxiliary accelerator, 0.01-0.1% of a metal ion chelating agent, 0.1-5% of an organic peroxide initiator, 0-10% of fumed silica, and 0-30% of a plasticizer. According to the present invention, the acrylic ester self-lubricating type monomer with the boron contained on the molecular chain is added during the preparation process, such that the lubricating property of the threaded locking sealing anaerobic adhesive can be improved, the friction coefficient and the torque coefficient during the fastener tightening can be reduced, and the torque strength of the cured threaded locking sealing anaerobic adhesive, the storage stability of the adhesive liquid, and the late coloring on the adhesive can not be affected.

Description

technical field [0001] The invention relates to the field of thread locking and sealing anaerobic adhesives, in particular to a lubricating thread locking and sealing anaerobic adhesive and a preparation method thereof. Background technique [0002] At present, the lubricity of conventional anaerobic adhesives for thread locking and sealing is poor, and there is a problem of increasing the friction coefficient of fasteners, and the torque coefficient of fasteners will increase significantly after glue application. The torque coefficient K is an important data in the bolt tightening process, which is mainly determined by the friction coefficient of the fastener. According to T=KDF (T is the tightening torque, D is the nominal diameter, and F is the clamping force), it can be seen that in order to obtain the specified clamping force, it is necessary to greatly increase the tightening torque, which will bring more problems to the assembly process of many customers. Big trouble...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J11/04C09J11/06C09K3/10
Inventor 艾少华赵景左韩胜利
Owner 湖北南北车新材料有限公司
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