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Flexible anaerobic adhesive suitable for large-gap curing and used for sealing pipe threads

A large gap, anaerobic adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of incomplete curing and slow curing of anaerobic adhesives, and achieve fast positioning speed Effect

Active Publication Date: 2022-07-08
YANTAI SEAYU NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of slow curing and incomplete curing of anaerobic adhesives on large gaps or irregular parts

Method used

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  • Flexible anaerobic adhesive suitable for large-gap curing and used for sealing pipe threads
  • Flexible anaerobic adhesive suitable for large-gap curing and used for sealing pipe threads
  • Flexible anaerobic adhesive suitable for large-gap curing and used for sealing pipe threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]

[0047] In the present embodiment, the described preparation method is as follows:

[0048] (1) 40 parts of self-made dual-curing resin, 25 parts of hydroxyethyl methacrylate, 15 parts of tetrahydrofuran acrylate, and 12 parts of isobornyl acrylate were placed in a reaction kettle, under the condition of 25-30 ℃, at 300r / Stir at the speed of min for 30min to ensure uniform mixing.

[0049] (2) Add 1 part of o-benzenesulfonimide, 0.5 part of N,N-dimethylaniline, 0.03 part of p-phenol, and 0.02 part of EDTA Na4 into the stirring tank, under the condition of 25-30 ℃, at 600r / min Stir at the speed of 40min to ensure uniform stirring.

[0050] (3) Then 3 parts of cumene hydroperoxide, 1 part of 184D, 1 part of 819, 0.8 part of triaryl hexafluoroantimonate iodonium salt, and 0.2 part of 1-hydroxy-cyclohexyl-phenyl ketone were placed under a yellow light. Add it into the kettle under the condition of 25-30℃, stir at a speed of 600r / min for 40min to ensure uniform stirri...

Embodiment 2

[0052]

Embodiment 3

[0054]

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Abstract

The invention discloses a flexible anaerobic adhesive suitable for large-gap curing and used for sealing pipe threads, and relates to the field of adhesives. By adopting the acrylic resin with epoxy groups and double-bond bifunctional groups, free radical curing and cation curing can be carried out during UV-induced curing. Free radical curing is used for rapid positioning, positive ions are subjected to post-curing, and finally the final strength is achieved through anaerobic curing. The problems of low curing speed and incomplete curing of the anaerobic adhesive on a large-gap or irregular part are solved. Meanwhile, the flexible polyether polyurethane modified acrylic resin is adopted, so that the cured colloid is good in toughness and excellent in shockproof and anti-falling performance, and the problems that the colloid is poor in toughness after cation curing, and a bonded part is prone to brittleness and cracking in the vibration process are solved.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a flexible anaerobic adhesive for pipe thread sealing suitable for curing with large gaps. Background technique [0002] Anaerobic adhesive is a one-component solvent-free adhesive. It is easy to use, curable at room temperature, heat-resistant, acid-base resistant, etc. process. At present, anaerobic adhesives are widely used for pipeline sealing in high-pressure hydraulic systems, which are used to prevent leakage of gas and liquid, and provide an instant, low-pressure sealing effect. However, due to its free radical curing mechanism, conventional anaerobic adhesives have strict requirements on the gap of the bonding parts. For pipeline parts with large gaps, the curing is often incomplete and the ideal bonding effect cannot be achieved. And if the exposed glue is not thoroughly treated, it will also contaminate other parts. At present, a UV anaerobic dual-curing system is used to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/16C08G18/10C08G18/48C08G18/67C08G18/83
CPCC09J175/16C08G18/10C08G18/4854C08G18/672C08G18/831C08G2170/00C08G2190/00Y02A20/20
Inventor 姜国徽李峰贺国新张利文
Owner YANTAI SEAYU NEW MATERIALS CORP LTD
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