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Emulsion acrylic pressure-sensitive adhesive and preparation method thereof

A technology of acrylate and methyl methacrylate, which is applied in the field of emulsion-type acrylate pressure-sensitive adhesive and its preparation, can solve the problems of poor environmental protection and achieve the effects of strong environmental protection, good stability, and improved cohesion

Inactive Publication Date: 2013-03-13
QINGDAO PENGHAI SOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional solvent-based pressure-sensitive adhesives are poor in environmental protection because they contain a large amount of solvents, and do not conform to the current trend of the times. Therefore, the research on emulsion-type acrylate pressure-sensitive adhesives is of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Under the conditions of 70°C and 750r / min, 2 parts of sodium dodecyl sulfate (SDS) and 0.4 parts of ammonium persulfate (KPS) were stirred in 35 parts of distilled water evenly. A prepolymer was prepared from 20 parts of methyl methacrylate (MMA) and 10 parts of vinyl acetate (VAc), and reacted for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 95°C, increase the rotation speed to 1600r / min, add 8 parts of 2-hydroxyethyl methacrylate (HEMA) for cross-linking modification, and react for 1.5 hours. Ammonia water was added to adjust the pH value of the system to 5, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0015] The peel strength of the emulsion was 12.6 N / 25mm.

Embodiment 2

[0017] Under the conditions of 70°C and 750r / min, 2 parts of sodium dodecyl sulfate (SDS) and 0.4 parts of ammonium persulfate (KPS) were stirred in 35 parts of distilled water evenly. A prepolymer was prepared from 20 parts of methyl methacrylate (MMA) and 10 parts of vinyl acetate (VAc), and reacted for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 95°C, increase the rotation speed to 1600r / min, add 9 parts of 2-hydroxyethyl methacrylate (HEMA) for cross-linking modification, and react for 1.5h. Ammonia water was added to adjust the pH value of the system to 5, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0018] The peel strength of the emulsion was 14.8 N / 25mm.

Embodiment 3

[0020] Under the conditions of 70°C and 750r / min, 2 parts of sodium dodecyl sulfate (SDS) and 0.4 parts of ammonium persulfate (KPS) were stirred in 35 parts of distilled water evenly. A prepolymer was prepared from 20 parts of methyl methacrylate (MMA) and 10 parts of vinyl acetate (VAc), and reacted for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 95°C, increase the rotation speed to 1600r / min, add 10 parts of 2-hydroxyethyl methacrylate (HEMA) for cross-linking modification, and react for 1.5 hours. Ammonia water was added to adjust the pH value of the system to 5, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0021] The peel strength of the emulsion was 16.5 N / 25mm.

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Abstract

The invention relates to an emulsion acrylic pressure-sensitive adhesive and a preparation method thereof. The preparation method comprises the steps of: preparing a prepolymer by using methyl methacrylate (MMA) and vinyl acetate (VAc) as raw materials; adding an acrylic acid diluent for diluting; adding hydroxyethyl-2-methacrylate (HEMA) for modification; and adjusting the pH value to prepare the emulsion acrylic pressure-sensitive adhesive. The emulsion acrylic pressure-sensitive adhesive has the advantages of strong environmental protection property, high stripping strength and good stability.

Description

technical field [0001] The invention relates to an emulsion-type acrylate pressure-sensitive adhesive and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] Pressure-sensitive adhesives refer to adhesives that do not require the addition of curing agents or solvents, and do not require heating, and only need to apply a little contact force to achieve bonding. Its characteristics are that it is easy to stick, not difficult to remove, and it is not damaged when peeled off. The adhesive layer will not dry for a long time, so it is also called self-adhesive. The acrylic pressure-sensitive adhesive is a kind of adhesive that develops very rapidly. It has excellent pressure sensitivity and adhesion. Because its molecular structure does not contain saturated bonds, it has aging resistance, light resistance and water resistance. It is widely used. to packaging, automotive, electronics and other fields. Traditional solvent-based...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F218/08C08F220/06C08F220/28C09J133/12
Inventor 于忠清王亮
Owner QINGDAO PENGHAI SOFT CO LTD
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