Modified water-based acrylate laminating adhesive used for plastic film compositing and preparation method and application thereof

A water-based acrylate and plastic film technology, which is applied in chemical instruments and methods, adhesives, adhesive types, etc., can solve the problems of low peel strength of substrates, affecting bonding strength, affecting material surface bonding, etc., to achieve inhibition Mold phenomenon, extended shelf life, high peel strength effect

Active Publication Date: 2013-04-24
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the application of water-based acrylate composite adhesives is still very limited. The main reason is that the bonding strength of water-based composite adhesives is not as good as that of solvent-based adhesives. Some small molecular substances, such as emulsifiers and other additives, will remain in the water-based composite adhesives. It will precipitate or migrate to the surface, which will affect the bonding of the material surface; in addition, the surface tension of water is relatively high, resulting in low adhesion between the latex and the film surface, which affects the bonding strength; The peeling strength of the material is low, the stability is poor, the coating is not good, and it is easy to mold after long-term storage.

Method used

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  • Modified water-based acrylate laminating adhesive used for plastic film compositing and preparation method and application thereof
  • Modified water-based acrylate laminating adhesive used for plastic film compositing and preparation method and application thereof
  • Modified water-based acrylate laminating adhesive used for plastic film compositing and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Acrylate emulsion reaction raw materials:

[0030]

[0031] 1. Fully mix 4kg of methyl methacrylate, 2kg of vinyl acetate and 2kg of methyl acrylate to obtain mixed monomer A for later use;

[0032] 2. Mix and stir 0.05kg alcohol ether sulfosuccinic acid monoester disodium salt, 12kg butyl acrylate, 7.3kg mixed monomer A and 1kg methacrylic acid for 0.5 hours, and control the stirring speed at 300 rpm to obtain pre-emulsion B ,spare;

[0033] 3. Dissolve 0.1kg of ammonium persulfate in 15kg of deionized water to make solution C, and set aside;

[0034] 4. Add the remaining 0.7kg of mixed monomer A, 1.0kg of solution C, 0.03kg of sodium bicarbonate and the remaining 10kg of deionized water into the reactor, control the stirring speed at 100 rpm, and raise the temperature to 78°C for about After 0.5 hour, a milky white bluish emulsion was obtained. At the same time, start to drop the pre-emulsion B and the remaining solution C, and finish the dripping within 4 hours...

Embodiment 2

[0037] Acrylate emulsion reaction raw materials:

[0038]

[0039] 1. Fully mix 1.5kg of methyl methacrylate and 0.3kg of methyl acrylate to obtain 1.8kg of mixed monomer A for later use;

[0040] 2. Mix and stir 0.047kg 2-allyl ether-3-hydroxypropane-1-sodium sulfonate, 2kg butyl acrylate, 0.6kg ethyl acrylate, 1.65kg mixed monomer A and 0.1kg acrylic acid for 0.5 hours, the stirring speed Control 350 revs / min to obtain pre-emulsion B, standby;

[0041] 3. Dissolve 0.03kg of potassium persulfate with 4kg of deionized water (accounting for 80% of the total amount of deionized water) to make solution C, set aside;

[0042]4. Add the remaining 0.15kg of mixed monomer A, 0.4kg of solution C, 0.003kg of disodium hydrogen phosphate and the remaining 1kg of deionized water into the reaction kettle, control the stirring speed at 120 rpm, and raise the temperature to 78°C for reaction About 40 minutes to get milky white bluish emulsion. Start to drop the pre-emulsion B and the r...

Embodiment 3

[0046] Acrylate emulsion reaction raw materials:

[0047]

[0048] 1. Fully mix 3.6kg of methyl acrylate and 1kg of vinyl acetate to obtain 4.6kg of mixed monomer A for later use;

[0049] 2. Mix and stir 0.03kg of 2-allyl ether-3-hydroxypropane-1-sodium sulfonate, 5.4kg of isooctyl acrylate, 4.2kg of mixed monomer A and 0.6kg of methacrylic acid for 0.5 hours. Control 400 rpm to obtain pre-emulsion B, and set aside;

[0050] 3. Dissolve 0.04kg of potassium persulfate with 8.25kg of deionized water (accounting for 75% of the total amount of deionized water) to make solution C for later use; 4. Mix the remaining 0.4kg of mixed monomer A, 0.6kg of solution C, 0.01kg of sodium acetate and the remaining 2.75kg of deionized water were added to the reactor, the stirring speed was controlled at 130 rpm, and the temperature was raised to 75°C for about 50 minutes to obtain a milky white bluish emulsion. Start to drop the pre-emulsion B and the remaining solution C at the same tim...

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Abstract

The invention discloses modified water-based acrylate laminating adhesive used for plastic film compositing, and a preparation method and application of the modified water-based acrylate laminating adhesive. The laminating adhesive is prepared from compound emulsion and crosslinking agent, wherein the compound emulsion contains ethylene-acrylic acid emulsion (EAA emulsion) and acrylate emulsion, and the acrylate emulsion is prepared from soft monomers, hard monomers, crosslinking monomers, initiator, emulsifier and antiseptic 1, 2-benzene isothiazole-3-ketone. Due to the fact that the EAA emulsion is strong in the adhesive capacity to film base material and good in compatibility with the acrylate emulsion system, moreover the crosslinking agent polyether imide and the antiseptic 1, 2-benzene isothiazole-3-ketone are added, the obtained modified water-based acrylate laminating adhesive is good in compatibility among the component, capable of enabling the EAA to be cross-linked with long-chain molecules of the acrylate when the modified water-based acrylate laminating adhesive is dried to form a film, good in adhesion to the film base material, high in bonding strength and peel strength, good in stability and coating property and capable of effectively restraining the phenomenon of latex moulding and prolonging the quality guarantee period, and meanwhile has stability of the acrylate emulsion and the obdurability of the EAA emulsion.

Description

technical field [0001] The invention relates to a modified water-based acrylic laminating adhesive, in particular to a modified water-based acrylic laminating adhesive used for compounding plastic films, a preparation method and an application thereof, and belongs to the field of polymer materials. Background technique [0002] Food packaging mainly uses composite bags to provide sealing, barrier, weather resistance and other properties. The composite bag is made of polyester, polypropylene, aluminized film and other film adhesives through a dry composite process to make a composite film, and then it is cured and cut. Domestic flexible packaging plastic-plastic composite films are mainly made of organic solvent-based laminating adhesives, but solvent-based laminating adhesives may cause residual solvents in the composite film, pollute the environment, and easily affect food safety. As consumers pay more attention to green and healthy needs and the national environmental pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J123/08C09J11/08C09J11/06C08F220/18C08F218/08C08F220/14C08F220/06C08F222/02C08F2/24B32B7/12B32B27/06
Inventor 朱清梅胡连芹黄宏存马俊超
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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