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Water-based acrylic structural adhesive

A water-based acrylic and adhesive technology, applied in the direction of adhesives, non-polymer organic compound adhesives, etc., can solve the problems of long curing time and weak bonding strength, and achieve short curing time, less volatile organic compounds and simple preparation process Effect

Inactive Publication Date: 2016-09-07
深圳市顾康力化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the modification of acrylate emulsions and the preparation of functional acrylate emulsions have attracted attention in the adhesive industry in recent years, most of the existing water-based adhesives have many problems such as long curing time and weak bonding strength. The field of extremely high structural adhesives is still blank in the world

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The invention provides a water-based acrylic structural adhesive, which is composed of pretreatment liquid and seed liquid. Nitrile, vinyl acetate, vinylidene chloride and cross-linking monomer are re-emulsified and reserved for later use. Before use, the temperature can be gradually raised to 25°C to ensure rapid bonding after the reaction; the seed liquid is composed of methyl acrylate monomer and surface active monomer. It is obtained after mixing and emulsifying the seed liquid. The reaction temperature should be controlled at 63°C and the reaction time should be 28 minutes. Before use, the temperature should be gradually controlled to about 25°C. Among them, methyl acrylate has an alkyl carbon number of 3, and the modified monomer is Linear organopolysiloxane, organopolysiloxane contains silicon-bonded alkenyl groups, the mass percentage of alkenyl groups is 0.6%; methyl methacrylate has alkyl carbon numbers of 3 and 4 methacrylic acid Each kind of alkyl ester; the...

Embodiment 2

[0018] The invention provides a water-based acrylic structural adhesive, which is composed of pretreatment liquid and seed liquid. Nitrile, vinyl acetate, vinylidene chloride and cross-linking monomer are re-emulsified and reserved for later use. Before use, the temperature can be gradually raised to 25°C to ensure rapid bonding after the reaction; the seed liquid is composed of methyl acrylate monomer and surface active monomer. It is obtained after mixing and emulsifying the seed liquid. The reaction temperature should be controlled at 60°C for the preparation of the seed liquid, and the reaction time should be guaranteed to be 25 minutes. It is a linear organopolysiloxane, which contains an alkenyl group bonded to silicon, and the mass percentage of the alkenyl group in the organopolysiloxane is 0.5%; the alkyl carbon of methyl methacrylate Alkyl methacrylate with a number of 3; the cross-linking monomer is composed of glycidyl methacrylate, diacetone acrylamide and adipate...

Embodiment 3

[0021]The invention provides a water-based acrylic structural adhesive, which is composed of pretreatment liquid and seed liquid. Nitrile, vinyl acetate, vinylidene chloride and cross-linking monomer are re-emulsified and reserved for later use. Before use, the temperature can be gradually raised to 25°C to ensure rapid bonding after the reaction; the seed liquid is composed of methyl acrylate monomer and surface active monomer. It is obtained after mixing and emulsifying the seed liquid. The reaction temperature should be controlled at 65°C for seed liquid production, and the reaction time should be at least 30 minutes. The body is a linear organopolysiloxane, which contains alkenyl groups bonded to silicon, and the mass percentage of alkenyl groups is 0.7%; the alkyl carbon number of methyl methacrylate is 4; The linking monomer is composed of glycidyl methacrylate, diacetone acrylamide and adipate dihydrazide, wherein the mass ratio of adipate dihydrazide in the crosslinkin...

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Abstract

The invention relates to chemical adhesive, in particular to water-based acrylic structural adhesive. The water-based acrylic structural adhesive is prepared by mixing pre-treatment liquid and base liquid, wherein the pre-treatment liquid is prepared by emulsifying a methyl acrylate monomer and a modified monomer in ice water, then adding methyl methacrylate, acrylonitrile, vinyl acetate, vinylidene chloride and a crosslinking monomer, and emulsifying again; the base liquid is prepared by mixing and emulsifying the methyl acrylate monomer and a surface active monomer; the modified monomer is linear organic polysiloxane which contains not less than 0.5% by mass of alkenyl; the crosslinking monomer comprises glycidyl methacrylate, diacetone acrylamide and adipic dihydrazide; the surface active monomer comprises alkyl allyloxy polyoxyethylene sodium phosphate and dialkyl-2-sulfosuccinate sodium. According to the technical scheme, the water-based acrylic structural adhesive is short in curing time, high in bonding strength, environmentally friendly, and free of pollution.

Description

technical field [0001] The invention relates to a chemical adhesive, in particular to a water-based acrylic structural adhesive. Background technique [0002] There are more than 1,200 synthetic adhesive manufacturers in China, with more than 3,000 product varieties and a production capacity of 3 million tons per year, but there are no more than 100 large-scale manufacturers, and most enterprises (especially small workshop-style enterprises) can produce solvents type adhesive. The chloroprene adhesives and SBS adhesives produced in China are basically triphenyl or halogenated hydrocarbon solvents, which contain a large amount of harmful organic substances. These substances are emitted into the air and cause headaches, eye, nose and throat pain to those who have been exposed to them for a long time. Symptoms such as coughing, itching, dizziness, fatigue, and decreased concentration are not environmentally friendly. It can be seen that environmentally friendly adhesives will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06
CPCC09J4/06
Inventor 唐炜
Owner 深圳市顾康力化工有限公司