Acrylate adhesive with network interpenetrating structures and method for preparing acrylate adhesive

An acrylate and network interpenetrating technology, which is applied in adhesive types, grafted polymer adhesives, adhesives, etc., can solve the problems of brittle and hard hand feeling at low temperature, sticky hand feeling at high temperature, and insufficient adhesion. Achieve the effect of improving the bonding performance, increasing the bonding strength, and facilitating industrial production

Active Publication Date: 2017-12-29
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the structural characteristics of the main chain structure of the acrylate polymer molecule and the side group, this adhesive has poor air permea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an environment-friendly acrylate emulsion adhesive with network interpenetrating structure characteristics, specifically comprising the following steps:

[0026] (1) Preparation of modified polyvinyl alcohol:

[0027] Measure 150 mL of dimethyl sulfoxide solution of 20 g / L polyvinyl alcohol (the polyvinyl alcohol used has a degree of polymerization of 300 and a degree of alcoholysis of 98%), and add 3 mL of acryloyl chloride dropwise at 4°C. React at room temperature for 2 hours; add the reacted solution dropwise to 150 mL of absolute ethanol for sedimentation, and centrifuge to separate the precipitate; wash the precipitate with ether for 3 times, and dry it in vacuum at room temperature to constant weight to obtain modified polyvinyl alcohol, which is the component I.

[0028] (2) Adhesive preparation:

[0029] Add nonionic emulsifier alkylphenol polyoxyethylene ether 0.06g, anionic emulsifier sodium lauryl sulfate 0.12g in the 10g aqueous sol...

Embodiment 2

[0032] A method for preparing an environment-friendly acrylate emulsion adhesive with network interpenetrating structure characteristics, specifically comprising the following steps:

[0033] (1) Preparation of modified polyvinyl alcohol:

[0034] Measure 40 mL of dimethyl sulfoxide solution of 50 g / L polyvinyl alcohol (the polyvinyl alcohol used has a degree of polymerization of 300 and a degree of alcoholysis of 88%), and add 1.0 mL of acryloyl chloride dropwise at 8°C , react at room temperature for 2 hours; add the reacted solution dropwise into 150mL of absolute ethanol for sedimentation, and centrifuge to separate the precipitate; the precipitate is washed 3 times with ether, and vacuum-dried to constant weight at room temperature to obtain modified polyvinyl alcohol, namely the composition Part I.

[0035] (2) Adhesive preparation:

[0036]Add nonionic emulsifier alkylphenol polyoxyethylene ether 0.144g, anionic emulsifier sodium lauryl sulfate 0.12g in the 10g aqueou...

Embodiment 3

[0038] A method for preparing an environment-friendly acrylate emulsion adhesive with network interpenetrating structure characteristics, specifically comprising the following steps:

[0039] (1) Preparation of modified polyvinyl alcohol:

[0040] Measure 100 mL of dimethyl sulfoxide solution of 20 g / L polyvinyl alcohol (the polyvinyl alcohol used has a degree of polymerization of 500 and a degree of alcoholysis of 98%), and add 5 mL of acryloyl chloride dropwise at 6°C. React at room temperature for 4 hours; add the reacted solution dropwise to 200 mL of absolute ethanol to settle, and centrifuge to separate the precipitate; wash the precipitate with ether for 5 times, and dry it in vacuum at room temperature to constant weight to obtain modified polyvinyl alcohol, which is the component I.

[0041] (2) Adhesive preparation:

[0042] Add nonionic emulsifier alkylphenol polyoxyethylene ether 0.14g, anionic emulsifier sodium lauryl sulfate 0.12g in the 10g aqueous solution of...

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Abstract

The invention discloses environment-friendly acrylate emulsion adhesive with network interpenetrating structures and a method for synthesizing the environment-friendly acrylate emulsion adhesive. The environment-friendly acrylate emulsion adhesive comprises modified polyvinyl alcohol, mixed monomers, composite emulsifiers and initiators. The modified polyvinyl alcohol is a component I, and the mixed monomers are components II. The environment-friendly acrylate emulsion adhesive and the method have the advantages that polyvinyl alcohol macromolecular chains are led into copolymers, and accordingly the water resistance of the environment-friendly acrylate emulsion adhesive can be effectively improved; movement of acrylate polymer molecules can be inhibited by the aid of the network interpenetrating structures formed by polyvinyl alcohol macromolecules, and accordingly the purpose of improving the hardness and the adhesive strength of polymers can be achieved; raw materials for the environment-friendly acrylate emulsion adhesive are non-toxic and pollution-free, accordingly, the environment-friendly acrylate emulsion adhesive and the method conform to current green chemistry development trend, and the environment-friendly acrylate emulsion adhesive is applicable to industrial production.

Description

technical field [0001] The invention relates to the field of adhesive production, in particular to a method for preparing an environment-friendly acrylic emulsion adhesive with network interpenetrating structure characteristics. Background technique [0002] Acrylic emulsion adhesive is an adhesive that can be bonded and fixed to the adherend without the help of light or heat, and only needs to be applied with light pressure. This type of adhesive is due to its preparation and use. It is safe and widely used due to its good film-forming properties, flexibility, weather resistance and excellent mechanical properties. However, due to the structural characteristics of the main chain structure of the acrylate polymer molecule and the side group, this adhesive has poor air permeability, insufficient adhesion, water resistance, brittle and hard hand feeling at low temperature, and sticky hand feeling at high temperature. And other issues. In order to develop acrylate adhesives w...

Claims

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Application Information

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IPC IPC(8): C09J151/00C08F261/04C08F220/18C08F218/08C08F220/06C08F2/26C08F2/30
CPCC08F2/26C08F2/30C08F261/04C09J151/003C08F220/1804
Inventor 郭敏杰张雪莹樊志蔡飚范光碧聂其群
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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