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A kind of impact-resistant low-whitening instant adhesive and preparation method thereof

An impact-resistant, instant glue technology, applied in the field of instant glue, can solve the problems of low impact resistance, poor water resistance, high brittleness, etc., and achieve the effects of improving toughness, excellent oil resistance, and excellent aging resistance

Active Publication Date: 2021-08-06
NINGBO DELI ADHESIVE PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its water resistance is poor, its brittleness is relatively large, and it is not impact-resistant, and the phenomenon of whitening is serious. Therefore, the development of an instant glue with impact resistance and low whitening is what the market needs at this stage.
[0003] In the prior art, the shortcoming that the instant glue is not impact-resistant is improved by adding rubber elastomers, such as nitrile rubber, neoprene, etc. These substances can form a rubber phase when the glue is cured, thereby improving the impact resistance of the glue , but the α-cyanoacrylate glue added with rubber elastomers will become embrittled during the aging process; the effect of reducing whitening can be achieved by adding pure alkoxy cyanoacrylate products, but due to its sales The price is high, and the impact strength, curing speed, aging performance and other important properties are very poor, it is difficult to meet the actual field use requirements, and the requirements for the sizing environment are high, so its application is also limited

Method used

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  • A kind of impact-resistant low-whitening instant adhesive and preparation method thereof
  • A kind of impact-resistant low-whitening instant adhesive and preparation method thereof
  • A kind of impact-resistant low-whitening instant adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Take each component according to the following raw material weight percentages:

[0036]

[0037] (2) At room temperature of 25°C, first vacuum the three-necked flask for 5 minutes, then pass custom-made high-purity nitrogen (99.99% and above) through a drying device to dry (water content is less than or equal to 1‰), and then use dry high-purity Nitrogen purges and replaces the air in the drying flask, and protects the reaction process with nitrogen to prevent the product from producing side reactions that cause it to polymerize too quickly or die because it cannot be preserved in the later stage;

[0038] (3) After adding the weighed methoxy α-cyanoacrylate and ethyl α-cyanoacrylate into the three-necked flask, quickly add the polymerization inhibitor hydroquinone within two minutes, and stir for 5 minutes ;

[0039] (4) Add weighed polymethyl acrylate, ethyl acrylate and ammonium citrate to the mixture obtained above and stir for 15 minutes to stir the mixed ...

Embodiment 2

[0041] (1) Take each component according to the following raw material weight percentages:

[0042]

[0043] Among them, α-cyanoacrylate is a mixture of ethyl α-cyanoacrylate and butyl α-cyanoacrylate, the ratio of the two components is 1:1; citrate is a mixture of sodium citrate and ammonium citrate, The ratio of the two components is 1:1.

[0044] (2) At room temperature of 25°C, first vacuum the three-necked flask for 10 minutes, then pass custom-made high-purity nitrogen (99.99% and above) through a drying device to dry (water content is less than or equal to 1‰), and then use dry high-purity Nitrogen purges and replaces the air in the drying flask, and protects the reaction process with nitrogen to prevent the product from producing side reactions that cause it to polymerize too quickly or die because it cannot be preserved in the later stage;

[0045] (3) After adding the weighed methoxy α-cyanoacrylate and α-cyanoacrylate into the three-necked flask, quickly add the...

Embodiment 3

[0048] (1) Take each component according to the following raw material weight percentages:

[0049]

[0050](2) At room temperature of 25°C, first vacuum the three-necked flask for 15 minutes, then pass custom-made high-purity nitrogen (99.99% and above) through a drying device to dry (water content less than or equal to 1‰), and then use dry high-purity Nitrogen purges and replaces the air in the drying flask, and protects the reaction process with nitrogen to prevent the product from producing side reactions that cause it to polymerize too quickly or die because it cannot be preserved in the later stage;

[0051] (3) After adding the weighed methoxy α-cyanoacrylate and octyl α-cyanoacrylate into the three-necked flask, quickly add the polymerization inhibitor hydroquinone within two minutes, and stir for 5 minutes ;

[0052] (4) Add weighed polyethyl acrylate, methyl acrylate and sodium citrate to the mixture obtained above and stir for 20 minutes to make the mixture eve...

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PUM

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Abstract

The invention discloses an impact-resistant low-whitening instant glue and a preparation method thereof. The toughness of the instant glue is improved by mixing polyacrylate, acrylate copolymer, and green and environment-friendly plasticizer tri-n-butyl citrate. Impact resistance and plasticity, at the same time, the addition of α-cyanoacrylate methoxy and citrate reduces the whitening rate of instant glue. The instant glue obtained by the method has good physical properties, high impact strength, low production cost, simple preparation process and the like on the basis of realizing low whitening.

Description

technical field [0001] The invention relates to an instant glue, in particular to an impact-resistant low-whitening instant glue and a preparation method thereof. Background technique [0002] The instant glue has a single component and low viscosity. It does not need to add solvents or catalysts at room temperature. It can be bonded together only by heating or touching. It has high strength and very short curing time. It is a fast-setting glue. glue. Moreover, the instant glue has a good bonding effect on most materials, and has a wide range of applications. However, its water resistance is poor, its brittleness is relatively large, and it is not impact-resistant, and the phenomenon of whitening is serious. Therefore, the development of an instant glue with impact resistance and low whitening is what the market needs at this stage. [0003] In the prior art, the shortcoming that the instant glue is not impact-resistant is improved by adding rubber elastomers, such as nitr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/04C09J4/02C09J4/06C09J11/06
CPCC09J4/06C09J11/06
Inventor 盛科挺
Owner NINGBO DELI ADHESIVE PRODS