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Aqueous acrylic emulsion, aqueous adhesive for plastic-plastic composite materials and preparation method thereof

A technology of water-based acrylic and water-based adhesives, applied in the direction of adhesive types, ester copolymer adhesives, etc., can solve the problems of insufficient bonding strength of plastic films, low peel strength of composite films, and poor heat resistance. Achieve high shear strength and green strength, high molecular weight, easy to use

Inactive Publication Date: 2010-06-02
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary acrylic emulsion adhesives are not high enough for various plastic films. The main performance is low initial adhesion, low peel strength of composite films, and poor heat resistance, which cannot meet the requirements of most food packaging. needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 of the present invention provides a water-based acrylic emulsion, which can be used to prepare water-based adhesives for plastic-plastic composite materials. The soft monomer and 3-7wt% of acrylic acid functional monomer are polymerized under the action of water, emulsifier, initiator, buffer and pH regulator; wherein, the amount of the emulsifier is acrylic hard monomer, acrylic soft 0.5-5.0% of the total weight of monomers and acrylic functional monomers; the amount of the initiator is 0.4-1.0% of the total weight of acrylic hard monomers, acrylic soft monomers and acrylic functional monomers; The amount of the buffering agent is 0.1% to 0.6% of the total weight of the acrylic hard monomer, the acrylic soft monomer and the acrylic functional monomer; 0.5-2% of the total weight of the three; the amount of the water is 1-1.5 times of the total weight of the acrylic hard monomer, acrylic soft monomer and acrylic functional monomer.

[0019] The acrylic hard...

Embodiment 2

[0025] The second embodiment provides a water-based acrylic emulsion, which can be used to prepare water-based adhesives for plastic-plastic composite materials. The acrylic emulsion consists of the following components (by weight):

[0026] Methyl acrylate 10

[0027] Methyl methacrylate 26

[0028] Ethyl acrylate 20

[0029] Butyl acrylate 36

[0030] Methacrylic acid 3

[0031] Hydroxyethyl Acrylate 2

[0032] Diethylene glycol diacrylate 2

[0033] Trimethylolpropane Triacrylate 1

[0034] Emulsifier A-103 (Shanghai Zhongcheng Chemical Company) 1.0

[0035] Emulsifier EFS-1310 (Shanghai Zhongcheng Chemical Company) 1.0

[0036] Emulsifier UCAN-1 (Shanghai Zhongcheng Chemical Company) 0.8

[0037] Ammonium persulfate (initiator) 0.6

[0038] Sodium bicarbonate (buffer) 0.2

[0039] Ammonia (PH regulator) 1.6

[0040] Deionized water 145.

[0041] The preparation method of above-mentioned aqueous acrylic acid emulsion specifically comprises:

[0042] Take each raw...

Embodiment 3

[0046] This embodiment three provides a water-based acrylic emulsion, which can be used to prepare water-based adhesives for plastic-plastic composite materials. The acrylic emulsion consists of the following components (by weight):

[0047] Methyl methacrylate 32

[0048] Ethyl acrylate 28

[0049] Isooctyl acrylate 33

[0050] Methacrylic acid 3

[0051] Hydroxyethyl Acrylate 2

[0052] Diethylene glycol diacrylate phthalate 1

[0053] Trimethylolpropane Triacrylate 1

[0054] Emulsifier A-103 (Shanghai Zhongcheng Chemical Company) 1.2

[0055] Emulsifier EFS-1310 (Shanghai Zhongcheng Chemical Company) 1.2

[0056] Emulsifier UCAN-1 (Shanghai Zhongcheng Chemical Company) 0.6

[0057] Sodium persulfate (initiator) 0.8

[0058] Ammonium bicarbonate (buffer) 0.3

[0059] Ammonia (PH regulator) 1.4

[0060] Deionized water 120.

[0061] The preparation method of above-mentioned aqueous acrylic acid emulsion specifically comprises:

[0062] Get each raw material accor...

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Abstract

The invention discloses an aqueous acrylic emulsion, an aqueous adhesive for plastic-plastic composite materials and a preparation method thereof, and belongs to the field of preparation of adhesive. The acrylic emulsion is polymerized from 30-50 wt% of acrylic acid hard monomer, 40-60 wt% of acrylic acid soft monomer and 5-10 wt% of acrylic acid functional monomer under the action of water, an emulsifying agent, an initiator, a buffering agent and a pH regulator. The invention also provides an aqueous adhesive and a preparation method thereof. The molecule segment of the film forming matter (acrylate copolymer) in the aqueous acrylic emulsion has various chemical groups, such as -OH, -COOH, -NH and the like; and the chemical groups can form various chemical bonds and hydrogen bonding acting force, and thereby having favorable adhering force for various composite substrates (plastic films, aluminum plating films, metal foils and the like). By properly matching the soft monomer and the hard monomer and adopting the corresponding functional monomer to participate in the copolymerization, the invention enhances the adhesive affinity to the plastic films with low surface tension, thereby enhancing the wetting property of the adhesive on the surface of the plastic films and the combined strength.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and is characterized in that it relates to a water-based acrylic emulsion, a water-based adhesive for plastic-plastic composite materials and a preparation method thereof. Background technique [0002] Laminating adhesive is a special adhesive used for dry compounding between plastic film, aluminum foil, paper and other materials. The compounded material can be used for packaging food, beverages, daily chemical products, tobacco and alcohol, etc. It is a very economical and beautiful Simple packaging materials have been rapidly developed in the field of food packaging. However, the laminating adhesives currently used in the market are mainly solvent-based adhesives. Due to the use of a large amount of organic solvents such as ethyl acetate, methyl ethyl ketone, and isopropanol, they bring great harm to workers during use and evaporate into the air. The solvents in the compounding process have ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/28C08F220/30C08F220/32C09J133/08
Inventor 陈小锋沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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