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Acrylic acid series hot melt adhesive and preparation method thereof

A hot-melt adhesive, acrylic technology, applied in the direction of adhesive types, ester copolymer adhesives, amide/imide polymer adhesives, etc., can solve the problem of low 180°peel strength, inconvenient use, sticky Solve problems such as poor junction performance, achieve the effect of increasing cohesive strength and adhesion performance, low glass transition temperature, and good adhesion performance

Pending Publication Date: 2019-10-25
浙江铂淳新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Low cohesive strength, poor stickiness (holding force) and low 180° peel strength, poor bonding performance (low bonding strength);
[0007] 2. Poor hot-melt performance, poor flow performance under high temperature conditions, and inconvenient to use;
[0008] 3. Defects such as poor temperature resistance and high temperature hot pressing, easy to overflow glue;

Method used

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  • Acrylic acid series hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An acrylic hot-melt adhesive, made of the following raw materials in parts by weight: 60-95 parts of 2-ethylhexyl acrylate, 20-26 parts of vinyl acetate, 13-16 parts of hydroxypropyl acrylate, acrylamide 1.5 to 6 parts, 5.5 to 8 parts of 2-acetaminoacrylic acid, and 1.6 to 1.9 parts of azobisisobutyronitrile.

[0037] Preferably, the acrylic hot melt adhesive is made of raw materials comprising the following parts by weight: 82 parts of 2-ethylhexyl acrylate, 23.5 parts of vinyl acetate, 14.5 parts of hydroxypropyl acrylate, 3.7 parts of acrylamide, 2 - 7.2 parts of acetaminoacrylic acid, 1.75 parts of azobisisobutyronitrile.

[0038] The present invention also provides a kind of preparation method of described acrylic hot-melt adhesive, comprises the following steps:

[0039] S1: Weigh respectively by weight: 2-ethylhexyl acrylate, vinyl acetate, hydroxypropyl acrylate, acrylamide, 2-acetamidoacrylic acid, azobisisobutyronitrile;

[0040] S2: uniformly mixing 2-ethyl...

Embodiment 2

[0048] An acrylic hot-melt adhesive, made from the following raw materials in parts by weight: 60 parts of 2-ethylhexyl acrylate, 20 parts of vinyl acetate, 13 parts of hydroxypropyl acrylate, 1.5 parts of acrylamide, 2-acetic acid Aminoacrylic acid 5.5 parts, azobisisobutyronitrile 1.6 parts.

[0049] In the present embodiment, the preparation method of described acrylic hot melt adhesive comprises the following steps:

[0050] S1: Weigh respectively by weight: 2-ethylhexyl acrylate, vinyl acetate, hydroxypropyl acrylate, acrylamide, 2-acetamidoacrylic acid, azobisisobutyronitrile;

[0051] S2: uniformly mixing 2-ethylhexyl acrylate, vinyl acetate, hydroxypropyl acrylate, acrylamide and 2-acetaminoacrylic acid to obtain a mixed monomer;

[0052] S3: Dissolving azobisisobutyronitrile with 78% mixed monomers to obtain azobisisobutyronitrile monomer solution, which is set aside;

[0053] S4: Put the remaining mixed monomers into the reaction kettle, stir, raise the temperature...

Embodiment 3

[0059] An acrylic hot-melt adhesive, made of the following raw materials by weight: 95 parts of 2-ethylhexyl acrylate, 26 parts of vinyl acetate, 16 parts of hydroxypropyl acrylate, 6 parts of acrylamide, 2-acetic acid 8 parts of aminoacrylic acid, 1.9 parts of azobisisobutyronitrile.

[0060] In the present embodiment, the preparation method of described acrylic hot melt adhesive comprises the following steps:

[0061] S1: Weigh respectively by weight: 2-ethylhexyl acrylate, vinyl acetate, hydroxypropyl acrylate, acrylamide, 2-acetamidoacrylic acid, azobisisobutyronitrile;

[0062] S2: uniformly mixing 2-ethylhexyl acrylate, vinyl acetate, hydroxypropyl acrylate, acrylamide and 2-acetaminoacrylic acid to obtain a mixed monomer;

[0063] S3: Dissolving azobisisobutyronitrile with 82% mixed monomers to obtain azobisisobutyronitrile monomer solution for later use;

[0064] S4: Put the remaining mixed monomers into the reaction kettle, stir, raise the temperature to 67°C, start...

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Abstract

The invention discloses an acrylic acid series hot melt adhesive. The acrylic acid series hot melt adhesive is prepared from the following raw materials in parts by weight: 60-95 parts of 2-ethylhexylacrylate, 20-26 parts of vinyl acetate, 13-16 parts of hydroxypropyl acrylate, 1.5-6 parts of acrylamide, 5.5-8 parts of 2-acetamidoacrylic acid, and 1.6-1.9 parts of azodiisobutyronitrile. Accordingto the acrylic acid series hot melt adhesive, through selection of raw material compositions, the content of the raw materials is optimized, the 2-ethylhexyl acrylate, the vinyl acetate, the hydroxypropyl acrylate, the acrylamide, the 2-acetamidoacrylic acid and the azodiisobutyronitrile with the appropriate proportion are selected, the respective advantages are fully played, mutual complementation and mutual promotion are also achieved, thus the prepared acrylic acid series hot melt adhesive the large holding power (holding force) and the high 180-degree peel strength, and that is, the binding performance is good; and the acrylic acid series hot melt adhesive has the good hot melt performance and the good flowing performance at the high temperature, and is more convenient to use.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an acrylic hot-melt adhesive and a preparation method thereof. Background technique [0002] Hot-melt adhesive is a multi-component mixture based on thermoplastics. It is applied to the surface of the substrate in the form of a melt for bonding. It is solid at room temperature and melts into a liquid after heating. It is coated and wetted to be adhered. After bonding, after pressing and cooling, bonding can be achieved in a few seconds or even less. Unlike thermosetting, solvent-based, and water-based adhesives, hot-melt adhesives do not contain any solvents, will not cause pollution due to solvent volatilization, do not need heating and cross-linking, and have no drying process. They are easy to use and can be made into blocks, films, Strip or granular form makes packaging, storage, transportation and use more convenient. It can not only meet the operation requirements of dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C08F220/18C08F218/08C08F220/20C08F220/56C08F226/02
CPCC09J133/26C08F220/18C08F220/1808
Inventor 孙孝辉孙祥栋
Owner 浙江铂淳新材料股份有限公司
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