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Anaerobic adhesive as well as preparation method and application thereof

A technology of anaerobic adhesives and adhesives, applied in the field of anaerobic adhesives, can solve problems such as difficult to meet the basic performance requirements, affect the physical and mental health of personnel, and peeling of users, and achieve good rubber flexibility, good sealing performance, and penetration speed fast effect

Inactive Publication Date: 2021-04-20
湖南世纪特邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the application of some monomers, resins, accelerators, and initiators in the existing anaerobic adhesives, they often have a relatively large pungent odor, which can easily affect the physical and mental health of personnel, causing peeling, redness and swelling in users. , decay, etc.
However, the existing non-irritating anaerobic adhesives on the market are difficult to meet the requirements for their basic performance.

Method used

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  • Anaerobic adhesive as well as preparation method and application thereof
  • Anaerobic adhesive as well as preparation method and application thereof
  • Anaerobic adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of Accelerator A: In molar parts, add 1 part of 4-butyl phthaloylsulfonimide to 25 parts of ethanol, slowly add 1.1 parts of quinoline while stirring at room temperature, continue stirring for 3 hours after the addition, and then After standing at 5°C for 5 hours, crystallization was observed, the filter residue was collected by filtration, and the filter residue was distilled under reduced pressure to obtain a crystal salt which was Accelerator A.

[0036] The preparation of the anaerobic adhesive, in parts by weight, sequentially add 47 parts by weight of ethoxylated bisphenol A dimethacrylate, 21 parts by weight of ethylene glycol dimethacrylate, and polyurethane methyl 30 parts by weight of acrylate, the rotating speed is adjusted to 750r / min, and stirred until completely dissolved;

[0037] Then add 0.09 parts by weight of naphthoquinone in the stirrer, and stir for 30-40min;

[0038] Add 1.2 parts by weight of accelerator A, 0.05 parts by weight of as...

Embodiment 2-10

[0051] The preparation methods of Examples 2-10 and Comparative Examples 1-2 are the same as Example 1.

[0052]To embodiment 1-10, initial solidification time and shear strength of comparative example 1-2 are tested, and test result is as shown in table 3:

[0053] Table 3. Embodiment 1-10, initial solidification time and shear strength detection result of comparative example 1-2

[0054]

[0055]

[0056] According to Table 3, it can be seen that after 48 hours, the anaerobic adhesives of Examples 1-10 and Comparative Examples 1-2 have been completely cured, and the shear strength will not increase significantly. The shear strength is mainly determined by the film-forming resin and reactive monomer, and the whole initiating system has little influence on it. It can be seen from Table 3 that after the adhesive is completely cured, the overall shear strength is not much different. The shear strength of Example 1-10 is slightly higher than that of Comparative Example 1-2...

Embodiment 11

[0063] Preparation of Accelerator A: In terms of molar parts, add 1 part of bisbenzenesulfonimide to 30 parts of ethanol, slowly add 1.2 parts of isoquinoline while stirring at room temperature, continue stirring for 4 hours after the addition, and then at 8 ° C After standing still for 6 hours, crystallization was observed, the filter residue was collected by filtration, and the filter residue was distilled under reduced pressure, and the obtained crystal salt was Accelerator A.

[0064] For the preparation of anaerobic adhesives, add 80 parts by weight of ethoxylated bisphenol A hydroxypropyl methacrylate and 20 parts by weight of epoxy methacrylate to the mixer, and adjust the speed to 550r / min, stir until completely dissolved;

[0065] Then add 0.09 parts by weight of oxalic acid into the mixer, and stir for 30-40min;

[0066] Add 2.4 parts by weight of accelerator A, 0.8 parts by weight of trichloroacetic acid, 3.0 parts by weight of ammonium persulfate, and 0.1 part by...

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Abstract

The invention discloses an anaerobic adhesive, which is prepared from the following raw materials in parts by weight: 20 to 30 parts of film-forming resin, 60 to 80 parts of methacrylate monomers and derivatives thereof, 0.4 to 2.4 parts of an accelerant A, 0.01 to 1 part of a stabilizer, 1 to 3 parts of an initiator and 0.5 to 1 part of other auxiliaries, The accelerant A is generated by reaction of imine and quinoline compounds. The anaerobic adhesive is environment-friendly, safe, excellent in bonding speed and bonding strength, good in sealing performance and high in storage stability, can meet the requirements of industrial use, and does not influence human health. In addition, the invention also provides a preparation method of the anaerobic adhesive, and the preparation method also has the technical effects, and is simple in process and suitable for industrial production. In addition, the invention further provides application of the anaerobic adhesive, and the anaerobic adhesive is particularly suitable for pipeline connection in cold and heat exchange equipment.

Description

technical field [0001] The invention relates to the technical field of anaerobic adhesives, in particular to an anaerobic adhesive and its preparation method and application. Background technique [0002] Anaerobic adhesive refers to a series of anaerobic curing properties that can be used for bonding, fixing and sealing. It is generally composed of acrylate monomers, stabilizers, accelerators and initiators. some additives etc. During storage, the glue will not solidify due to contact with air, but during use, after the glue is isolated from the air, it will spontaneously solidify under the action of metal ions, thereby playing the role of bonding, fixing or sealing. [0003] Due to the advantages of stable bonding and high reliability, anaerobic adhesives are widely used in the machinery industry, especially in the fields of thread locking, plane and pipe sealing, cylindrical parts holding, and structural bonding. However, due to the application of some monomers, resins,...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J163/10C09J11/06
Inventor 刘云喜刘寿喜张锦寻琼
Owner 湖南世纪特邦新材料有限公司
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