Toughened alpha-cyanoacrylate adhesive

A technology of cyanoacrylate and ethyl cyanoacrylate, which is applied in the field of toughened α-cyanoacrylate adhesives, can solve the problems of reduced bonding strength and curing speed, difficulty in uniform dispersion, poor moisture resistance, etc., to achieve Effect of increasing molecular length, enhancing toughness and impact resistance, high viscosity

Inactive Publication Date: 2017-03-22
三友(天津)高分子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] α-cyanoacrylate adhesives can be quickly polymerized and cured with the help of traces of water, and can bond almost all materials except polyethylene and other inert materials. The curing speed is fast, so it is widely used; but α-cyanoacrylate Ester adhesives have problems of high brittleness and poor moisture resistance
[0003] The toughening methods of α-cyanoacrylate adhesives mainly contain the following: (1) adding plasticizers with good miscibility with cyanoacrylates, this method has the disadvantages of reducing bonding strength and curing speed; ( 2) Add comonomers with good plasticity with α-cyanoacrylate monomers, such as enyl cyanoglutarate, alk...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 5% anionic polymerization inhibitor sulfur dioxide, 1% free radical polymerization inhibitor hydroquinone, 0.05% F351 in the ethyl cyanoacrylate monomer with a weight content of 93.95%, in the compounding kettle Mix and stir evenly to obtain a glue solution.

[0030] The tensile shear strength (manganese steel) is 15.9MPa, and the peel strength (No. 10 steel) is 13.6N / 25mm.

Embodiment 2

[0032] Add 0.05% of anionic polymerization inhibitor sulfur dioxide, 1.5% of free radical polymerization inhibitor hydroquinone, and 0.1% of F351 to the ethyl cyanoacrylate monomer with a weight content of 98.35%. Mix and stir evenly to obtain a glue solution.

[0033] The tensile shear strength (manganese steel) is 32.1MPa, and the peel strength (No. 10 steel) is 26.7N / 25mm.

Embodiment 3

[0035] Add 0.05% of anionic polymerization inhibitor sulfur dioxide, 1% of free radical polymerization inhibitor hydroquinone, and 0.5% of F351 to the ethyl cyanoacrylate monomer with a weight content of 98.45%. Mix and stir evenly to obtain a glue solution.

[0036] The tensile shear strength (manganese steel) is 22.1MPa, and the peel strength (No. 10 steel) is 20.7N / 25mm.

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Abstract

The invention relates to the field of adhesives, especially to a toughened alpha-cyanoacrylate adhesive. The adhesive comprises the following components by weight percentage: 85-99% of an alpha-cyanoacrylate monomer; 0.001-10% of an anionic polymerization inhibitor; 0.01-4% of a free radical polymerization inhibitor; and 0.01-5% of micro-nano size core-shell particles. According to the invention, micro-nano size core-shell particles are introduced into the alpha-cyanoacrylate adhesive to enhance the toughness and impact resistance of the alpha-cyanoacrylate adhesive. The alpha-cyanoacrylate adhesive prepared according to the invention not only has good toughness, but also has high viscosity, is conducive to bonding porous materials and is suitable for wide-gap scenes.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a toughened alpha-cyanoacrylate adhesive. Background technique [0002] α-cyanoacrylate adhesives can be quickly polymerized and cured with the help of traces of water, and can bond almost all materials except polyethylene and other inert materials. The curing speed is fast, so it is widely used; but α-cyanoacrylate Ester adhesives have problems of high brittleness and poor moisture resistance. [0003] The toughening methods of α-cyanoacrylate adhesives mainly contain the following: (1) adding plasticizers with good miscibility with cyanoacrylates, this method has the disadvantages of reducing bonding strength and curing speed; ( 2) Add comonomers with good plasticity with α-cyanoacrylate monomers, such as enyl cyanoglutarate, alkoxyalkyl cyanoacrylates, etc. Such monomers are relatively expensive (3) Increase the molecular weight of the ester group of α-cyanoacrylate, for example, th...

Claims

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Application Information

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IPC IPC(8): C09J4/04C09J11/08C09J11/04C09J11/06
CPCC09J4/00C09J11/04C09J11/06C09J11/08
Inventor 吴玉昆高之香李建武李程吴子刚闫静邵凯赵苗段亚冲
Owner 三友(天津)高分子技术有限公司
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