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A kind of anaerobic adhesive and preparation method thereof

A technology of anaerobic adhesive and epoxy acrylate, which is applied in adhesives, polymer adhesive additives, adhesive additives, etc., can solve problems such as low impact strength, decreased bonding strength, and difficulty in meeting bonding requirements. Achieve the effects of enhanced adhesion and high temperature resistance, high adhesive strength, and good dimensional stability

Active Publication Date: 2022-02-08
深圳市郎搏万先进材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional anaerobic adhesives for high temperature resistant structures are mainly thread locking adhesives. This type of thread adhesive is mainly for the application of thread sealing and locking. It has low bonding strength to flat structures and poor flexibility. Low
Although the bonding strength of general anaerobic structural adhesives is good, they are not ideal in terms of heat resistance, mainly because the bonding strength will drop significantly under the working conditions of 150°C or above, which is difficult to meet the requirements of metal machinery. , electronics and other industries for bonding requirements under high temperature conditions

Method used

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  • A kind of anaerobic adhesive and preparation method thereof

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preparation example Construction

[0063] The object of the present invention also provides a kind of preparation method of above-mentioned anaerobic glue, comprises the steps:

[0064] Put the epoxy acrylate oligomer, bismaleimide, reactive diluent, polymerization inhibitor, metal chelating agent, accelerator and filler into the reactor in proportion by weight, fully stir at the first temperature until Dissolve completely; cool to the second temperature, then put the initiator and the dye into the reaction kettle according to the ratio of parts by weight, stir evenly to obtain the finished product, the first temperature is 45-75°C, and the second temperature is 25- 45°C.

[0065] As a preferred embodiment, the first temperature is 55-65°C, and the second temperature is 35°C.

Embodiment 1

[0071] The anaerobic adhesive in this embodiment includes the following components in parts by mass:

[0072] 65 parts of bisphenol A epoxy acrylate, 15 parts of bismaleimide, 10 parts of n-butyl glycidyl ether, 0.3 parts of p-methoxyphenol, 0.05 parts of tetrasodium ethylenediaminetetraacetic acid, acetylphenylhydrazine 2 parts, 2.3 parts of fumed silica, 5 parts of tert-butyl hydroperoxide, and 0.35 parts of disperse violet.

[0073] Bisphenol A epoxy acrylate, bismaleimide, n-butyl glycidyl ether, p-methoxyphenol, ethylenediaminetetraacetic acid tetrasodium salt, acetylphenylhydrazine and gas phase Silica is put into the reaction kettle, fully stirred at 55-65°C until completely dissolved; cooled to 35°C, then tert-butyl hydroperoxide and disperse violet are put into the reaction kettle in proportion by weight, and stirred evenly to obtain finished product.

Embodiment 2

[0075] The anaerobic adhesive in this embodiment includes the following components in parts by mass:

[0076] 65 parts of novolac epoxy acrylate, 15 parts of bismaleimide, 10 parts of tert-butyl glycidyl ether, 0.3 parts of hydroquinone, 0.1 part of disodium salt of edetate, o-benzenesulfonimide 3.2 parts, 2 parts of polymethyl methacrylate, 4 parts of cumene hydroperoxide, 0.2 parts of disperse red, 0.2 parts of disperse violet.

[0077] According to the above-mentioned ratio of parts by mass, novolac epoxy acrylate, bismaleimide, tert-butyl glycidyl ether, 0.3 parts of hydroquinone, disodium ethylenediaminetetraacetic acid, o-benzenesulfonimide and Put polymethyl methacrylate into the reaction kettle, fully stir at 55-65°C until completely dissolved; cool to 35°C, then put cumene hydroperoxide, disperse red and disperse violet into the reaction kettle in proportion by weight Inside, the finished product is obtained after stirring evenly.

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Abstract

The invention discloses an anaerobic adhesive and a preparation method thereof. The anaerobic adhesive comprises the following components in parts by mass: 50-80 parts of epoxy acrylate oligomer; 5-25 parts of bismaleimide; 5-20 parts of reactive diluent; 0.05-2 parts of polymerization inhibitor; 0.02-1 part of metal chelating agent; 1-8 parts of accelerator; 1-8 parts of initiator; 0.5-6 parts of filler; 0.05-1 part of dye. The anaerobic adhesive provided by the invention has excellent cohesive force and high temperature resistance.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an anaerobic adhesive and a preparation method thereof. Background technique [0002] Anaerobic adhesive refers to a series of anaerobic curing properties that can bond, fix and seal. It has become an indispensable liquid tool in the machinery industry. industry has a wide range of applications. During storage, the glue will not solidify when in contact with air, but during use, after the glue is isolated from the air, it will spontaneously solidify under the action of metal ions, thus playing the role of bonding, fixing or sealing. [0003] The traditional anaerobic adhesives for high temperature resistant structures are mainly thread locking adhesives. This type of thread adhesive is mainly for the application of thread sealing and locking. It has low bonding strength to flat structures and poor flexibility. Low. Although the bonding strength of general anaerobic structura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/00C09J11/04C09J11/06C09J11/08
CPCC09J4/00C09J11/04C09J11/06C09J11/08
Inventor 康红伟
Owner 深圳市郎搏万先进材料有限公司