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Acrylate pressure sensitive adhesive emulsion of PET substrate for battery packaging, preparation method and application thereof

A pressure-sensitive adhesive emulsion, acrylate technology, applied in pressure-sensitive films/sheets, adhesives, ester copolymer adhesives, etc., can solve problems such as affecting the health of operators, polluting the environment, warping and cracking of PET substrates, etc. , to reduce the probability of warping and cracking, good mechanical properties, and ensure the effect of durability

Active Publication Date: 2018-01-19
WUXI HAITE NEW MATERIAL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solvent-based acrylic pressure-sensitive adhesives have excellent comprehensive performance, but they contain a large amount of organic solvents such as toluene and ethyl acetate, and have high VOC emissions during coating, which affects the health of operators, pollutes the environment, and often There will be warping and cracking of the PET base material, which will affect the production efficiency and product quality

Method used

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  • Acrylate pressure sensitive adhesive emulsion of PET substrate for battery packaging, preparation method and application thereof
  • Acrylate pressure sensitive adhesive emulsion of PET substrate for battery packaging, preparation method and application thereof
  • Acrylate pressure sensitive adhesive emulsion of PET substrate for battery packaging, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A PET substrate acrylic pressure-sensitive adhesive emulsion for battery packaging. Its preparation method includes the following steps:

[0046] (1) Weigh 0.75g anionic emulsifier sodium dodecyl benzene sulfonate, 0.6g nonionic emulsifier polyoxyethylene ether sorbitol hexastearate, 0.1g buffer ammonium bicarbonate, 40g deionized water, Stir at room temperature to obtain the emulsifier aqueous solution; slowly add a mixed monomer consisting of 75g butyl acrylate, 24g methyl acrylate, 3.0g hydroxyethyl acrylate, 2.0g acrylic acid, 2.0g N-methylolacrylamide, and stir for 30min at a stirring speed of 600r / min, the pre-emulsion is prepared.

[0047] (2) Weigh 0.42 g of ammonium persulfate and add 10 g of deionized water to dissolve to prepare an aqueous initiator solution.

[0048] (3) Heat 60 g of deionized water to 80° C., add 7.37 g of pre-emulsion and keep it for 2 minutes, then add 5.21 g of the initiator aqueous solution, and keep it for 20 minutes to prepare a seed emuls...

Embodiment 2

[0054] A PET substrate acrylic pressure-sensitive adhesive emulsion for battery packaging. Its preparation method includes the following steps:

[0055] (1) Weigh 0.9g anionic emulsifier sodium dodecylbenzene sulfonate, 0.5g nonionic emulsifier polyoxyethylene ether sorbitol hexastearate, 0.3g buffer ammonium bicarbonate, 40g deionized water, Stir at room temperature to obtain the emulsifier aqueous solution; slowly add a mixed monomer consisting of 80g butyl acrylate, 20g methyl acrylate, 2.0g hydroxyethyl acrylate, 2.0g acrylic acid, 2.0g N-methylolacrylamide, and stir for 30min at a stirring speed of 600r / min, the pre-emulsion is prepared.

[0056] (2) Weigh 0.2 g of ammonium persulfate and add 10 g of deionized water to dissolve to prepare an aqueous initiator solution.

[0057] (3) Heat 60 g of deionized water to 80° C., add 7.38 g of pre-emulsion and keep it for 2 minutes, and then see 5.1 g of the initiator aqueous solution and keep it for 20 minutes to prepare a seed emulsi...

Embodiment 3

[0063] A PET substrate acrylic pressure-sensitive adhesive emulsion for battery packaging. The preparation method thereof includes the following steps:

[0064] (1) Weigh 1.0g anionic emulsifier sodium dodecylbenzene sulfonate, 0.8g nonionic emulsifier polyoxyethylene ether sorbitol hexastearate, 0.15g buffer ammonium bicarbonate, 40g deionized water, Stir at room temperature to obtain an emulsifier aqueous solution; slowly add a mixed monomer consisting of 80g isooctyl acrylate, 25g methyl methacrylate, 1.0g hydroxyethyl methacrylate, 1.0g methacrylic acid, and 1.5g N-methylol acrylamide , Stir for 30min, stirring speed 600r / min, to prepare pre-emulsion.

[0065] (2) Weigh 0.8 g of ammonium persulfate and add 10 g of deionized water to dissolve to obtain an aqueous initiator solution.

[0066] (3) Heat 60 g of deionized water to 80° C., add 7.5 g of pre-emulsion and keep it for 2 min. Bye, for example, 5.4 g of the initiator aqueous solution, keep it for 20 min to prepare a seed em...

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Abstract

The invention discloses an acrylate pressure sensitive adhesive emulsion of a PET substrate for battery packaging, a preparation method and application thereof. The pressure sensitive adhesive emulsion comprises the following components by weight: 75-85 parts of an acrylate soft monomer, 15-25 parts of an acrylate hard monomer, 2-5 parts of a functional monomer, 1-3 parts of an internal crosslinking monomer, 0.5-2 parts of an anionic emulsifier, 0.5-1 part of a non-ionic emulsifier, 0.1-0.3 part of a buffering agent, 0.02-0.1 part of a defoaming agent, 0.02-0.08 part of a wetting agent, 0.02-2parts of an initiator, 120 parts of water, 0.02-0.1 part of an oxidant, 0.04-0.1 part of a reducing agent, and 1-3 parts of a pH regulator. The pressure sensitive adhesive emulsion provided by the invention has good mechanical properties, can reduce the warping and cracking probability of the PET substrate and ensure the adhesive durability, and is green, low-carbon and environment-friendly.

Description

Technical field [0001] The invention relates to the field of adhesives, in particular to an acrylic pressure-sensitive adhesive emulsion of a PET substrate for battery packaging, a preparation method and application thereof. Background technique [0002] The PET film used for battery packaging belongs to aluminum-plastic composite, which wraps the battery with a small diameter. Due to the stress and elasticity of the PET film itself, it is easy to warp, crack and even cause it to fall off, which greatly reduces the aesthetics of the battery surface packaging and affects the product. As a result, the acrylate pressure-sensitive adhesive of the PET substrate for battery packaging requires high mechanical properties, and it is necessary to prevent the PET substrate from warping. [0003] At present, the acrylate pressure-sensitive adhesive of PET substrate for battery packaging is mainly solvent-based acrylate pressure-sensitive adhesive. Solvent-based acrylic pressure-sensitive adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/38C09J7/25C08F220/18C08F220/14C08F220/20C08F220/06C08F220/58
Inventor 陈国荣卫晓波丁荣炎吴秋心白永平李晶波席丹殷晓芬
Owner WUXI HAITE NEW MATERIAL RES INST
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