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Long-operation-time two-component acrylate structural adhesive and preparation method thereof

An acrylate, operating time technology, applied in acrylonitrile butadiene styrene polymer adhesives, adhesives, chloroprene adhesives, etc., can be slow to solve, it may take ten hours or even days To be completely cured, unable to achieve strength and toughness, delaying customer work progress and other problems, to achieve the effect of ideal bonding ability, high strength and long operating time

Inactive Publication Date: 2020-09-15
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although acrylic adhesives are firmly bonded to most substrates and have excellent comprehensive performance, due to the high activity of acrylate monomers and the reaction of free radicals at the same time, the curing speed is fast, so in some large-area bonding processes In the case of conventional acrylic products, there will be a large amount of glue gel or even solidified when the glue is applied, and the replacement of adhesives such as epoxy, polyurethane or silicone rubber often cannot achieve both strength and toughness, and can be cured at the same time. The speed is slow, and it may take more than ten hours or even a few days to completely solidify, which not only delays the work progress of the customer, but also may have certain potential risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0030] (1) Component A preferably includes the following raw materials in parts by weight: 45-60 parts of (meth)acrylate monomer, 10-15 parts of toughening agent, 0.2-0.8 part of stabilizer, 2-7 parts of accelerator 5-10 parts of oxidizing agent, 5-7 parts of urethane acrylate oligomer, 1-5 parts of auxiliary agent.

[0031] Component B preferably includes the following raw materials in parts by weight: 30-50 parts of (meth)acrylate monomer, 10-15 parts of toughening agent, 0.5-1 part of stabilizer, 5-8 parts of accelerator, reducing 5-12 parts of agent, 5-10 parts of urethane acrylate oligomer, 1-5 parts of auxiliary agent.

[0032] (2) The (meth)acrylate monomers include lower (meth)acrylates or higher (meth)acrylates; preferably, the (meth)acrylate monomers preferably include Methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, tert-butyl methacrylate, hexyl methacrylate, lauryl methacrylate , dodecyl methacrylate, cyc...

Embodiment 1

[0053] A kind of long operating time two-component acrylate structural glue, its preparation method can comprise the following steps (each raw material is by weight):

[0054] Preparation of component A: Add 50 parts of methyl methacrylate, 3.5 parts of methacrylic acid, and 5.5 parts of hydroxyethyl methacrylate into the reaction kettle, and add 15 parts of neoprene, disperse for 5 hours under high-speed stirring, until The chloroprene rubber is completely dissolved, and then add 0.3 parts of 2,6-di-tert-butyl p-cresol, 0.2 parts of 4-methoxyphenol, 0.1 parts of stearic acid, 0.3 parts of p-benzoquinone, and 1.5 parts of zinc dimethacrylate 1.4 parts of phosphate accelerator, 5.3 parts of cumene hydroperoxide, 5.5 parts of polyester urethane acrylate oligomer and 1.4 parts of wax additive, and stirred at high speed for 6 hours until the raw materials were dissolved into Uniform and continuous glue solution, then vacuum degassing for 15 minutes, so as to prepare component A. ...

Embodiment 2

[0058] A kind of long operating time two-component acrylate structural glue, its preparation method can comprise the following steps (each raw material is by weight):

[0059] Preparation of component A: Add 35 parts of methyl methacrylate, 7 parts of methacrylic acid, 3 parts of hydroxyethyl methacrylate, and 5 parts of ethyl methacrylate into the reaction kettle, and add acrylonitrile-butanediene 8 parts of ethylene-styrene copolymer, disperse for 2 hours under high-speed stirring, then add 4 parts of neoprene, disperse for 2 hours under high-speed stirring, until the acrylonitrile-butadiene-styrene copolymer and neoprene are completely dissolved, and then sequentially Add 0.3 parts of p-benzoquinone, 0.3 parts of EDTA-4Na salt, 1.4 parts of Glymo A-187 coupling agent, 0.7 parts of phosphate accelerator, 0.6 parts of γ-methacryloxypropyl trimethoxysilane, iso 4.3 parts of propylbenzene hydrogen peroxide, 4.2 parts of polyester urethane acrylate oligomer, 2 parts of wax addit...

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Abstract

The invention discloses a long-operation-time two-component acrylate structural adhesive and a preparation method thereof. The two-component acrylate structural adhesive is composed of a component A and a component B, and the component A and the component B are used in cooperation according to the volume ratio of 1: 1; the component A comprises the following raw materials in parts by weight: 35-65parts of a (methyl) acrylate monomer, 8-25 parts of a toughening agent, 0.1-2 parts of a stabilizer, 2-15 parts of an accelerant, 3-15 parts of an oxidant, 3-10 parts of a urethane acrylate oligomerand 1-5 parts of an auxiliary agent; and the component B comprises the following raw materials in parts by weight: 30-70 parts of a (methyl) acrylic monomer, 5-20 parts of a toughening agent, 0.1-2 parts of a stabilizer, 1-10 parts of an accelerant, 3-18 parts of a reducing agent, 3-10 parts of a urethane acrylate oligomer and 1-5 parts of an auxiliary agent. The adhesive not only has long operation time, but also has ideal adhesive ability to common base materials, has high strength, and is suitable for working conditions of large-area adhesion.

Description

technical field [0001] The invention relates to the field of acrylate structural adhesives, in particular to a two-component acrylate structural adhesive with long operating time and a preparation method thereof. Background technique [0002] There are many kinds of acrylic adhesives, which have a wide range of bonding capabilities for metal and non-metal substrates, and at the same time cure quickly and react completely, and are widely used in various fields. Acrylic adhesives use acrylate as the matrix, react quickly under the action of various initiators, and can achieve rapid positioning within a few minutes, and can reach more than 70% of the final strength within half an hour. The pressing time is short and the work Fast tempo. Although acrylic adhesives are firmly bonded to most substrates and have excellent comprehensive performance, due to the high activity of acrylate monomers and the reaction of free radicals at the same time, the curing speed is fast, so in some...

Claims

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Application Information

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IPC IPC(8): C09J111/00C09J175/14C09J123/34C09J155/02C09J153/00C09J11/04C09J11/06C09J11/08
CPCC08L2205/035C09J11/04C09J11/06C09J11/08C09J111/00C09J123/34C09J153/00C08L23/34C08L75/14C08L91/06C08L55/02C08K13/04C08K7/26C08K5/09C08K5/521C08L11/00C08K5/5425C08K5/098C08K5/47C08K5/00
Inventor 易晨凤罗善国
Owner BEIJING COMENS NEW MATERIALS
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